2. Fill in the blanks with appropriate words.
a. The force which acts towards the centre is called .......
force.
Answers
Answer:
centripetal force
Explanation:
because this force always compels the body to move in circle
Related Questions
initially, the translational rms speed of a molecule of an ideal gas is 461 m/s. the pressure and volume of this gas are kept constant, while the number of molecules is doubled. what is the final translational rms speed of the molecules
Answers
The stated statement states that the molecules' final maximum rate of translation is 270 m/s.
What does physics define as speed?The rate at which the position of an object shifts in any direction. Speed is described as the ratio of the area traveled to the time required to cover that distance. Time is a scalar number since it just has a heading but no magnitude.
Briefing:temperature at the start = T
v = √(3RT/M) = 467 m/s
temperature = T' later
note PV = mRT/M = NRT/NA
so NT = constant,
now N is tripled, T reduces to T' = T/3
so v will change to v' = √(3RT'/M) = v*√(T'/T) =v*√(1/3) = 270 m/s
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What the someone explain this to me
Answers
Answer:
the answer might be A and D if not sorry
Explanation:
A coin has a radius of 1.06 cm and a thickness of 1.2 mm. Find its
volume in m^3.
Answers
Answer:
The volume of the coin is 4.236 x 10⁻⁷ m³
Explanation:
Given;
radius of a coin, r = 1.06 cm = 0.0106 m
thickness of the coin, h = 1.2 mm = 0.0012 m
The volume of the coin is given by;
volume = Area x thickness
Area of the coin = πr² = π (0.0106)² = 3.5304 x 10⁻⁴ m²
The volume of the coin = (3.5304 x 10⁻⁴ m²) x (0.0012 m)
The volume of the coin = 4.236 x 10⁻⁷ m³
Therefore, the volume of the coin is 4.236 x 10⁻⁷ m³
URGENT WILL GIVE BRAINLIEST TO BEST ANSWER
Which is not one of the properties of air?
mass
pressure
volume
density
Answers
Answer:
volume is not a property of air
explain why humans get an electric shock when the touch live wire ?
Answers
Answer:
look it up
Explanation:
An electrical shock is received when electrical current passes through the body. ... Whenever two wires are at different voltages, current will pass between them if they are connected. Your body can connect the wires if you touch both of them at the same time. Current will pass through your body.
A 5 kg object oscillates with simple harmonic motion. Its position as a function of time varies according to the following equation x(t) = 2 sin(( π/2)t + ( π/6))
At what time (in seconds) after t = 0 seconds is the kinetic energy first at a maximum?
Answers
The kinetic energy is first at a maximum after approximately 3.67 seconds after t=0.
To determine the time when the kinetic energy is first at a maximum, we need to find the time at which the velocity of the object is at a maximum. The kinetic energy of an object undergoing simple harmonic motion is maximum when the velocity is maximum.
The equation for velocity as a function of time in simple harmonic motion is given by:
v(t) = Aω cos(ωt + φ)
where A is the amplitude, ω is the angular frequency, t is time, and φ is the phase constant.
In this case, the equation for position is x(t) = 2 sin((π/2)t + (π/6)), which is in the form x(t) = A sin(ωt + φ).
Comparing the two equations, we can see that ω = π/2.
The velocity equation becomes:
v(t) = (π/2)A cos((π/2)t + φ)
To find the time at which the velocity is maximum, we need to find when the cosine term is at its maximum value of 1. This occurs when (π/2)t + φ = 0 or (π/2)t + φ = 2π.
Solving for t, we get:
(π/2)t = -φ or (π/2)t = 2π - φ
t = (-2φ/π) or t = (4π - 2φ)/π
Since the phase constant φ in the given equation is π/6, we substitute this value into the equations:
t = (-2(π/6)/π) or t = (4π - 2(π/6))/π
t = -1/3 or t = 11/3
Therefore, the kinetic energy is first at a maximum at t = 11/3 seconds.
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.... is the process of transferring blood from one person to another
Answers
Answer:
A blood transfusion is the process of transferring blood or one of its components from one person to another.
Deviance has an effect on social power. How is this BEST demonstrated?
A. Powerful people in society keep their power by defining the laws of deviant behavior.
B. People with little power perform more questionable acts with fewer consequences than the more powerful people.
C. All groups that follow cultural norms tend to have a large amount of social power in society.
D. Someone who doesn't follow norms in a society always gains power because other people will rebel with them.
Answers
Deviance has an effect on social power. Then, Powerful people in society keep their power by defining the laws of deviant .
Forms of Deviant Behavior Deviant Behavior Based on NatureBased on the nature is divided into two kinds, namely negative behavior and positive behavior.
a. Positive deviant behavior
Positive behavior is deviant behavior that gives or has a positive impact on social life, because it has innovative elements and ideas that emerge are also creative, so as to enrich people's insights.
Positive behavior is also directed primarily at the values to be achieved together as well as social interests and is often considered as something ideal in society. Positive behavior will usually be accepted by society, because it is a form of development and adjustment to the times.
b. Negative deviant behavior
Negative behavior is the opposite of positive behavior.
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Answer:
a
Explanation:
A positively charged particle Q1=45nC at the origin is held fixed. A negatively charged particle Q2=−28nC of mass m=7.5μg is located a distance d=25 cm from the positively charged particle along the positive x-axis. (b) A3\% Part (a) What is the magnitude of the electric force in newtons that acts on the charge Q2 ? F12= deductien per bint. Hists remainitig: 1 Feedbacki 096 dedoctice per feedback
Answers
We can see that the magnitude of the electric force that acts on the charge Q2 is 0.9072 mN.
Given, Charge Q1 = 45 nC Charge Q2 = - 28 nC.
The mass of the charge Q2 = m = 7.5 μg.
Distance between the charges = d = 25 cm.
The magnitude of the electric force that acts on the charge Q2 can be calculated using Coulomb's law.
The formula for Coulomb's law is as follows:
F = k × Q1 × Q2/d²Here k = 9 × 10⁹ Nm²/C² is the Coulomb's constant.
Substitute the given values in the Coulomb's law equation.
F = 9 × 10⁹ Nm²/C² × 45 nC × (-28) nC / (0.25 m)²
F = - 907.2 × 10⁻⁶ N ≈ - 0.9072 mN.
We can see that the magnitude of the electric force that acts on the charge Q2 is 0.9072 mN.
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The magnitude of the electric force that acts on the charge Q2 is 6.8 nC.
Charge on particle 1, Q1 = +45 nC
Charge on particle 2, Q2 = -28 nC
The mass of particle 2, m = 7.5 μg
Distance between the particles, d = 25 cm
Let's find the magnitude of the electric force in newtons that acts on the charge Q2 using the formula for the Coulomb force between two point charges, which is:
F12 = (1/4πε0) |Q1Q2|/r2
where ε0 is the permittivity of free space, Q1 and Q2 are the charges on the particles, and r is the distance between them.
To calculate F12, we need to convert the given values into the SI units:
Charge on particle 1, Q1 = +45 nC = 45 × 10⁻⁹ C
Charge on particle 2, Q2 = -28 nC = -28 × 10⁻⁹ C
The mass of particle 2, m = 7.5 μg = 7.5 × 10⁻⁶ kg
Distance between the particles, d = 25 cm = 0.25 m
Now, substituting the given values in the formula:
F12 = (1/4πε0) |Q1Q2|/r2
= (1/4π(8.85 × 10⁻¹² C²/Nm²)) |(45 × 10⁻⁹) × (-28 × 10⁻⁹)|/(0.25)²
= (1/(4π(8.85 × 10⁻¹²))) (45 × 28) × 10⁻¹⁸ /(0.25)²
= 6.80 × 10⁻⁸ N = 6.8 nC (approx)
Therefore, the magnitude of the electric force in newtons that acts on the charge Q2 is 6.8 nC.
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A ball is attached to the end of a string it swung at a vertical circle of three of 0.33M what is the minimum velocity that the ball must have to make it around the circle
Answers
Answer:
To make it around the circle, the tension in the string must provide the necessary centripetal force to keep the ball moving in a circle. At the top of the circle, the tension in the string must provide all the force to keep the ball moving in a circle. At the bottom of the circle, the tension in the string must provide the centripetal force in addition to the force of gravity.
We can use the centripetal force formula to solve for the minimum velocity: F_c = m * a_c
where F_c is the centripetal force, m is the mass of the ball, and a_c is the centripetal acceleration.
At the top of the circle, the centripetal force is equal to the tension in the string: F_c = T
where T is the tension in the string.
At the bottom of the circle, the centripetal force is equal to the sum of the tension in the string and the force of gravity:
F_c = T + mg
where m is the mass of the ball, g is the acceleration due to gravity (9.8 m/s^2), and T is the tension in the string.
The centripetal acceleration is given by: a_c = v^2 / r
where v is the velocity of the ball and r is the radius of the circle.
Since the circle has a radius of 0.33 m, we can substitute this into the equation for a_c: a_c = v^2 / 0.33
Combining these equations, we get:
At the top of the circle: T = m * v^2 / 0.33
At the bottom of the circle: T + mg = m * v^2 / 0.33
We can solve for the minimum velocity by using these two equations to eliminate the tension in the string: m * v^2 / 0.33 + mg = m * v^2 / 0.33
Simplifying this equation, we get: v = sqrt(0.33 * g)
Plugging in the values, we get: v = sqrt(0.33 * 9.8) = 1.81 m/s
Therefore, the minimum velocity that the ball must have to make it around the circle is 1.81 m/s
expert answer 1 month ago a) determine the distance of the spectrum. write the equation for the diffraction grating for the sodium and substitute the required values to determine the initial angular position of the sodium spectrum of the first order. write the equation for the diffraction grating for the sodium and substitute the required values to determine the final angular position of the sodium spectrum of the first order. determine the angular separation of both closely spaced yellow lines of sodium of the first order. -- b) write the equation for the diffraction grating for the sodium and substitute the required values to determine the initial angular position of the sodium spectrum of the second order. write the equation for the diffraction grating for the sodium and substitute the required values to determine the final angular position of the sodium spectrum of the second order. determine the angular separation of both closely spaced yellow lines of sodium of the second order. -- c) write the equation for the diffraction grating for the sodium and substitute the required values to determine the initial angular position of the sodium spectrum of the third order. write the equation for the diffraction grating for the sodium and substitute the required values to determine the final angular position of the sodium spectrum of the third order. determine the angular separation of both closely spaced yellow lines of sodium of the third order. like 0 the
Answers
Where θ 1 is the angle of the first line, and θ 2 is the angle of the second line.
What is angle?Angle is the measure of a turn or displacement between two intersecting lines. Angles are typically measured in degrees, with 360 degrees in a full circle. acute angles are smaller than 90 degrees, while obtuse angles are larger than 90 degrees. Straight angles are exactly 180 degrees, while reflex angles are greater than 180 degrees.
The equation for the diffraction grating for the sodium is:
nλ = d sinθ
Where n is the order of the spectrum, λ is the wavelength of the light, d is the distance of the spectrum, and θ is the angle of the light.
For the first order, the initial angular position is:
nλ = d sinθ
θ = sin-1 (λ/d)
For the first order, the final angular position is:
nλ = d sinθ
θ = sin-1 (λ/d)
The angular separation of the two closely spaced yellow lines of sodium is:
Δθ = θ 1 - θ 2
Where θ 1 is the angle of the first line, and θ 2 is the angle of the second line.
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Please help thanks
Most wind erosion is caused by _____.
1. saltation
2. abrasion
3. traction
4. plucking
Answers
Which of the following does not require good reaction time?
Select one:
A. Moving out of the way of a falling shelf
B.Removing your hand from a hot burner
C. Stopping while driving when you see the brake lights on the
car in front of you
D. Going to sleep
Answers
Sleep is an action that doesn’t require quick reaction time while the other options are.
If you build a common source amplifier with NMOS input transistor and we want a current source as a load and that current source goes from VDD to a node so what would be the type of the current source?
Answers
If you build a common-source amplifier with an NMOS input transistor, and you want a current source as a load, and that current source goes from VDD to a node, the type of current source would be the diode-connected transistor.
An NMOS current source implemented as a diode-connected transistor is a type of bipolar transistor circuit that creates a constant current from an input voltage. The collector and emitter of the bipolar transistor are connected together in the circuit, effectively turning the transistor into a diode. The main advantage of diode-connected transistors is that they can generate currents of a specific magnitude and not be influenced by changes in the supply voltage.
The current generated by the diode-connected transistor is almost completely determined by the physical characteristics of the transistor and the biasing resistors used in the circuit. Another advantage of diode-connected transistors is that they may be cascaded in series to create current sources of various sizes. These devices have been commonly used to generate reference currents, voltage-to-current (V-I) converters, and bias currents in linear integrated circuits. So therefore diode-connected transistor is the type of current source, if you build a common-source amplifier with an NMOS input transistor, and you want a current source as a load, and that current source goes from VDD to a node.
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What happens to the air in an air pump when being pumped into a tire? What happens to the air when allowed to escape from a tire?
Answers
PLZ HELP I DONT KNOW THIS ONE
Some ancient objects have been well-preserved in high mountain ranges,
where the concentration of oxygen is low. Otzi the Iceman lived more than
5,000 years ago. Archaeologists found him with his leather pouch, clothes,
and tools perfectly preserved in the ice of the Alps.
Marie's mother lost a leather purse in the yard of their house in Florida, where
the air has more oxygen. Marie found it 30 years later under a tree. It was
rotted and decayed.
Review the information in the data table. What does this information tell you
about the rate of decay reactions relative to the concentration of oxygen?
Answers
Answer:
yeah
Explanation:
The information tells you about the rate of decay is that in Florida the reaction occurs more slowly when there is less oxygen in the air.
What is the rate of decay?The reduction in the number of radionuclides per unit time is the rate of decay.
The following table shows that the rate of decay only depends upon the level of oxygen. In Florida concentration of the oxygen in the air is high
Due to this the decay time is less.
The decay time is inversly propotional to the rate of decay. In Florida the rate of decay is high.
Hence the information is that reaction occurs more slowly when there is less oxygen in the air.
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Calculate the change in time for each quarter of the track. Record the change in time in Table C of your Student Guide.
The change in time for the first quarter is _____ seconds.
The change in time for the second quarter is _____ seconds.
The change in time for the third quarter is _____ seconds.
The change in time for the fourth quarter is _____ seconds.
Answers
Answer:
Calculate the change in time for each quarter of the track. Record the change in time in Table C of your Student Guide.
The change in time for the first quarter is
✔ 2.07
seconds.
The change in time for the second quarter is
✔ 1.09
seconds.
The change in time for the third quarter is
✔ 0.95
seconds.
The change in time for the fourth quarter is
✔ 0.81
seconds.
Explanation:
Got it right in edge
Answer:
b a b d
Explanation:
Science Question: why do astronauts wear organge suits vs white suits
Follow answer please...
Answers
If force 1 has a magnitude of 5 N (forward) and force 2 has a magnitude of 30 N (forward), what is the net force acting on the object?
A.) 25 N forward
B.) 35 N forward
C.) 25 N backwards
D.) 35 N backwards
Answers
Why can water dissolve some ionic compounds, like NH4Cl, as well as some nonionic compounds, like methanol?
Answers
Answer:
Water is polar molecule. ... The ionic compounds are dissolved as these ions attract the hydrogen( negative charge attraacts them) and oxygen (positive charge attracts them) whereas methanol is a polar molecule and forms hydrogen bond with water molecules and hence dissolves.
Explanation:
PLS HELP RN
A stone is thrown horizontally from the top of a 31.2 m tall cliff. The stone lands at a distance
of 21.4 m from the edge of the cliff. What is the initial horizontal velocity of the stone?
Answers
When a stone is hurled horizontally from the top of a 31.2 m tall cliff, its horizontal initial velocity is 39.25 m/s.
What is the initial horizontal velocity formula?By measuring the ball's diameter d and dividing it by the time t it takes for it to cross the photogate, one can also calculate the ball's starting horizontal velocity. Therefore, Vo = d/t. The kinematics equations of motion can be used to calculate the horizontal velocity of a projectile motion made by a person or an item.
Calculation:Height of cliff is 31.2 m
distance is 21.4
t = √2h/g
t = √2×31.4/9.8
t = √62.8/9.8
t = 0.80
The stone's first motion:V = 31.4/0.08
V = 39.25 m/s.
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What might happen if you were in a braking car and you weren’t wearing your seatbelt?
Answers
Answer:
well it depends on how fast for short its B
Explanation:
when a platinum coil is submerged in liquid helium at temperature 4 kelvin, it is transformed into a) a semiconductor b) a superconductor c) a normal conductor d) a perfect insulator
Answers
A platinum coil turns becomes a superconductor when immersed in liquid helium at a temperature of 4 kelvin.
Energy from the outside is captured by the circulating fluid running through the coils, which then releases it through the interior coils into the building's interior. Superconductors have no electrical resistance as well as perfect diamagnetism. Cooper pairs of electrons are what cause superconductivity. The BCS theory, so named in honour of its three discoverers, describes how materials transform into "superb conductors" when their internal electrons cooperate to form Cooper pairs (or BCS pairs). When cooled to extremely low temperatures (near absolute zero, or roughly -273° Celsius), conductors completely lose all of their electrical resistance.
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ACTIVITY 4
Applying the equation learned, answer the following problems:
1. A bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s. What is its momentum? p = m/s. What Is Its Momentum?
Given:
Find:
Formula:
Solution:
2. A skateboard is rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s. What is its mass?
Given:
Find:
Formula:
Solution:
3. A pitcher throws a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s. What is its velocity?
Given:
Find:
Formula:
Solution:
Subject Is Science
Good Perfect Complete=Brainlist
Copy Wrong Incomplete=Report
Good Luck Answer Brainly Users:-)
Answers
Answer:
1) 10 kg-m/s
2) 2 kg
3) 20 m/s
Explanation:
The momentum of an object can be calculated using the equation:
\(\large\boxed{p=mv}\)
where:
p is momentum (measured in kilogram meters per second).m is mass (measured in kilograms).v is the velocity (measured in meters per second).\(\hrulefill\)
Question 1For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.
Given values:
m = 4.0 kgv = 2.5 m/sSubstitute the given values into the momentum formula and solve for p:
\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)
\(p=10\;\text{kg m/s}\)
Therefore, the momentum of the bowling ball is 10 kg-m/s.
\(\hrulefill\)
Question 2For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.
Given values:
p = 6.0 kg-m/sv = 3.0 m/sAs we want to find mass, rearrange the momentum formula to isolate m:
\(\large\boxed{m=\dfrac{p}{v}}\)
Substitute the given values into the formula and solve for m:
\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)
\(m=2\;\text{kg}\)
Therefore, the mass of the skateboard is 2 kg.
\(\hrulefill\)
Question 3For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.
Given values:
p = 10 kg-m/sm = 0.5 kgAs we want to find velocity, rearrange the momentum formula to isolate v:
\(\large\boxed{v=\dfrac{p}{m}}\)
Substitute the given values into the formula and solve for v:
\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)
\(v=20\;\text{m/s}\)
Therefore, the velocity of the baseball is 20 m/s.
How does the thermodynamic laws (0th, 1st, 2nd, 3rd) describe boiling water?
Answers
0th Law of Thermodynamics: The 0th law of thermodynamics states that if two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other.
Law's of Thermodynamics:In the case of boiling water, this law applies when the temperature of the water is equal to the boiling point of water (100°C).]
1st Law of Thermodynamics: The 1st law of thermodynamics states that energy can be neither created nor destroyed, only transformed from one form to another. In the case of boiling water, this means that the energy used to heat the water is converted to kinetic energy, which is then used to convert liquid water to gaseous steam.
2nd Law of Thermodynamics: The 2nd law of thermodynamics states that the entropy of the universe always increases. In the case of boiling water, this means that the heat energy released when the water is converted to steam is dispersed into the environment, resulting in an increase in entropy.
3rd Law of Thermodynamics: The 3rd law of thermodynamics states that the entropy of a perfect crystal at absolute zero temperature is zero. In the case of boiling water, this law does not apply since the water is not a perfect crystal and is not at absolute zero temperature.
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A hypothesis is a(n) ______________
An independent variable is__________
A dependent variable is___________
To determine the independent variable, what question can you ask yourself?
To determine the dependent variable, what questions can you ask yourself?
Answers
Answer:
It is an educated guess
Explanation:
let me know if the bottom ones need to be answered too.
g diversification does which of the following? * increases expected returns keeps expected returns constant reduces expected returns does not impact expected returns
Answers
Diversification reduces expected returns.
Diversification is an investment strategy that involves spreading investments across different assets or asset classes to reduce risk. By diversifying, investors aim to minimize the impact of potential losses from any one investment by allocating their funds across a variety of investments with different risk and return profiles.
The concept of diversification is based on the principle that different investments may perform differently under various market conditions. By combining investments with different risk levels and return potentials, the overall volatility of the portfolio can be reduced.
However, as part of the risk-reward tradeoff, diversification also tends to reduce expected returns. This is because by spreading investments across multiple assets, the portfolio becomes less exposed to the potential high returns of individual investments. Instead, the overall return is influenced by the weighted average returns of the diversified holdings.
In summary, diversification is a risk management strategy that aims to reduce risk in a portfolio, but as a consequence, it typically leads to a reduction in expected returns.
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An object of mass 5.6 kg is moving with an initial kinetic energy 404 Joules. If the object undergoes a displacement of 3.8 m in the same direction of an external force of 10.6 Newtons, its final kinetic energy in Joules is:
Answers
The final kinetic energy of the object is 444.28 Joules.
We can use the work-energy theorem to find the final kinetic energy of the object. The work-energy theorem states that the work done on an object by an external force is equal to the change in its kinetic energy. Mathematically, it can be expressed as:
Work done = Change in kinetic energy
The work done by the external force is equal to the force multiplied by the displacement, i.e.,
Work done = Force x Displacement
Work done = 10.6 N x 3.8 m
Work done = 40.28 J
Therefore, the change in kinetic energy is:
Change in kinetic energy = Work done
Change in kinetic energy = 40.28 J
We know the initial kinetic energy of the object is 404 Joules. Therefore, the final kinetic energy can be found by adding the change in kinetic energy to the initial kinetic energy, i.e.,
Final kinetic energy = Initial kinetic energy + Change in kinetic energy
Final kinetic energy = 404 J + 40.28 J
Final kinetic energy = 444.28 J
However, we need to be careful with the significant figures in this problem. The external force is given with only two significant figures, so we should limit our final answer to two significant figures as well.
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How to find average acceleration only using displacement and time?
Answers
Answer:
Average acceleration = Displacement / (time)^2
Explanation:
The unit for acceleration is
\(m {s}^{ - 2} \)
Displacement = m
Time = s
Hence the units of displacement and time should be manipulated to get the unit of acceleration.
You can't. You can only find average velocity.
But if you also know that initial velocity is zero ... the object started from rest ... then
Avg acceleration =
2 x displacement / time-squared
HELP PLSSSSSSSSSS
lithium has three protons. which model shows a neutral atom of lithium?
Answers
Answer:
B
Explanation:
the 3 electrons makes it neutral
Answer:
B
Explanation:
For neutral atoms, the number of protons equal the number of electrons.
Thus, a neutral atom of lithium will have 3 electrons outside the nucleus.