If an electrical component with a resistance of 54 Ω is connected to a 114-V source, how much current flows through the component? answer in:_____A

Answer:

In the morning the molecules were moving away from each other with a smaller speed than when the truck was carrying the substance.

Explanation:

Answer:

Explanation:

F = k * q * lambda * R * π * (1 - √2/2)

Substituting the given values of q, lambda, R, and k, we get:

F = (9 x 10^9 N*m^2/C^2) * (20 x 10^-9 C) * (1 x 10^-6 C/m) * (0.1 m) * π * (1 - √2/2)

F ≈ 8.58 x 10^-4 N

Therefore, the force of interaction between the half ring and the point charge is approximately 8.58 x 10^-4 N.

The image will be formed at a distance of 30 cm in its front. Hence, this is the required solution.

Given that,

Object distance, u = -15 cm

The radius of curvature of the concave mirror, R = 20 cm

Focal length, f = R/2 = -10 cm (negative for concave mirror)

Let v is the distance between mirror and the formed image. Using mirror's formula to find it as :

\($\frac{1}{u}+\frac{1}{v}=\frac{1}{f}$\)

\($\frac{1}{v}=\frac{1}{f}-\frac{1}{u}$\)

\($\frac{1}{v}=\frac{1}{(-10)}-\frac{1}{(-15)}$\)

\($v=-30 \mathrm{~cm}$\)

So, the image will be formed at a distance of 30 cm in its front. Hence, this is the required solution.

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Answer:

a)  T_alcohol = 123.2ºC , b) T_alcohol = -67.2ºC  and c)  r_alcohol =√5,6 r_mercury  

Explanation:

We can solve this problem using the thermal expansion equation

            ΔV = β Vo ΔT

indicates that alcohol has a coefficient of expansion 5 times that of mercury

           β_alcohol = 5 β_mercury

the amount of alcohol used from a correct reading at zero degrees, let's substitute in the equation for alcohol

           ΔV = β_ alcohol ΔT

           ΔV = 5.6 β_mercury ΔT

we see that the expansion is 5 times the expansion of mercury

           T_alcohol = 5.6 T_mercury

           T_alcohol = 5.6 22

           T_alcohol = 123.2ºC

b) in the case of T = -12ºC

          T_alcohol = 5.6 (-12)

          T_alcohol = -67.2ºC

c) In this case we want the division to give the same value for the two thermometers

let's use the volume ratio

          V = A L

where A is the area of ​​the circle and L the length that the alcohol travels

We know that the volume of alcohol is 5.6 times the volume of mercury

        V_alcohol = 5.6 V_mercury

        A_alcohol V = 5.6 A_mercury L

        A_alcohol = 5.6 A_mercury

if the area of ​​a plum is A = π r², when substituting in this equation

         π r_alcohol² = 5.6 π r_mercury²

           r_alcohol =√5,6 r_mercury

the consequence the radius of the alcohol thermometer must be √5.6 times the radius of the Mercury thermometer; the correct answer is 2

The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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The order of the average surface temperature of the given planets as Mercury, Earth, Mars, Jupiter, and Neptune based on their distance from the sun.

The Solar System can be described as the gravitationally bound system of the Sun and the plants are the objects that orbit it. The solar system is formed 4.6 billion years ago from the gravitational collapse of a giant interstellar cloud.

Most of the mass of the solar system is contained in the Sun and the remaining mass is in the planet Jupiter. The four inner planets Mercury, Venus, Earth, and Mars are terrestrial planets, made primarily of rock and metal.

The two largest planets Jupiter and Saturn, are gas giants, made mainly of hydrogen and helium. The next two, Uranus and Neptune, are ice giants, made of volatile substances with hydrogen and helium, such as ammonia, water, and methane.

The average surface temperature of Mercury is 333°F (167°C), Earth 59°F (15°C), Mars -85°F (-65°C), Jupiter -166°F (-110°C), and Neptune -330°F (-200°C)

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Answer:

0.01 m

Explanation:

Since the speed of light is 3.0×10^8 m/s

Use the equation,

Wavelength = speed ÷ frequency

Wavelength = 3.0×10^8 ÷ 3×10^10

Wavelength = 0.01m

If two city buses are traveling at 24 miles per hour and the buses are the same model and year but one bus has 30 passengers while the other bus has 12 passengers.  the best prediction is that the bus with 12 Passengers will cover those 24 miles with faster speed than the other.

Speed means, the rate by which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined.

mile, any of several distance measurements, such as the statute mile (5,280 ft) (1.609 km). It generally derived from the mille passus, or "thousand paces," of the Romans, which was equivalent to 5,000 Roman feet.

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Answer:

1. What does an object's kinetic energy depend on?

its mass and speed

2. Two city buses are traveling at 24 miles per hour. The buses are the same model and year. One bus has 30 passengers. The other bus has 12 passengers. Which is the best prediction?

The bus with 12 passengers will have less kinetic energy.

3. A softball player hits a ball at 78 miles per hour. Then she hits a ball at 80 miles per hour. Which is the best prediction?

The ball hit at 80 miles per hour will have more kinetic energy.

4. A hawk is chasing a sparrow. At the beginning of the chase, the hawk's kinetic energy is 5.1 Joules. At the end of the chase, the hawk doubles its speed. What is the best prediction for its kinetic energy at the end of the chase?

20.4 J

5. A student rolls two marbles down an inclined plane. One marble has a mass of 4.8 grams. The student calculates its kinetic energy to be 0.0035 Joules when it reaches the end of the plane. The second marble has a mass of 2.4 grams. What is the best prediction for its kinetic energy at the end of the plane?

0.00175 J

The force is \(\bold{120 \: N}\).

Newton's Second Law states that the resultant force acting on a body is equal to the product of the mass of this body times the acceleration it acquires.

We represent Newton's 2nd Law with the following formula:

\(\boxed{\bold{{F=m~ \cdot~a}}}\)

Solution of the exercise:

\(\begin{gathered}\begin{gathered}\begin{gathered}\displaystyle\text{$\mathrm{ \bold{F}= \bold{m}~ \cdot~ \bold{a}\left\{\begin{matrix}\displaystyle\text{$ \rm{ \bold F=? \: \bold{N}}$}\\\displaystyle\text{$\rm \bold{{m=60kg}}$}\\\ \: \displaystyle\text{$\rm{ \bold{a=2 m/s^{2} }}$} \end{matrix}\right.}$}\\\\\\\\ \: \displaystyle\text{$\rm{ \bold{F=60~\cdot~2}}$}\\\\\\\\ \boxed{\displaystyle\text{$\rm{ \bold{F=120~N.} }$}}\end{gathered} \end{gathered}\end{gathered}\)

∴ The force is \(\bold{120 \: N}\).

Answer: Therefore, the force exerted by the elevator floor under that man's feet is 120 Newtons.

Explanation:

A 60 kg man is going to use an elevator that will transport him upwards with an acceleration of 2 m/s². What is the force exerted by the floor of the elevator under the feet of that man?​

Data:

m = 60 kg

a = 2 m/s²

F = ?

The formula for Newton's second law is:

Where

Since we must calculate the force, it is not necessary to solve the formula. We substitute data and solve, then

F = 60 kg × 2 m/s²

F = 120 Newton

Therefore, the force exerted by the elevator floor under that man's feet is 120 Newtons.

Checking the oil will reduce the possibility of having to rebuild or replaced the engine.

what is an engine ?

A device created to transform one or more sources of energy into mechanical energy is known as an engine or motor. Potential energy, heat energy, chemical energy, electric potential, and nuclear energy are all forms of energy that are readily available.

The lubricating function of engine oil is crucial. It shields and stops all the moving parts from rubbing against one another. Metal-on-metal wear would quickly kill your engine without lubrication.

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Answer:

All of the objects in the solar system orbit the

Explanation:

sun

Answer: 70N

Explanation:

'and'= multiply

7N*10N=70N

Answer:

The first one

Explanation:

But I'm not sure though

According to the diagram the equivalent resistance of the group is

40.05 ohms

The equivalent resistance is calculated by investigating the diagram to note that R2 and R3 are in parallel and both are in series to R1

Resistors in parallel is solved by

Resistors in parallel = 1/25.4 + 1/70.8

Resistors in parallel = 0.0535 ohms

Equivalent resistance

Equivalent resistance = Resistors in parallel + Resistor in series

Equivalent resistance = 0.0535 + 40

Equivalent resistance = 40.0535

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Answer:

B. 686N

Explanation:

well do not write this because of I made a big mistake in my calculations

The tension on Box A if the acceleration of the system is provided clockwise is 686N.

The tension is the force of pulling in the linear objects.

Given is the system of two masses hung over a pulley with a string. Mass of block A, M(A) =35kg, M(B) = 20kg and the acceleration clockwise a =-2.67 m/s²

The tension in the string of each block = T =m(g-a)

Substitute the values, we get

T = 35 x (9.81-(-2.67)) +20(9.81 +2.67)

T =436.8 N + 249.6

T = 686.4 N

Thus, the tension in the the block A will be approximately 686N.

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The magnitude of the resultant vector, representing the actual path of the boat, is approximately 1.42 m/s.

To find the magnitude of the resultant vector, we need to consider the boat's velocity and the velocity of the river. The boat's velocity is given as 0.75 m/s, and the river's velocity is given as 1.2 m/s.

Since the boat is moving in a river, we can think of the boat's velocity as a combination of two velocities: its own velocity and the velocity of the river. The resultant vector represents the actual path of the boat, considering both velocities.

To calculate the resultant vector, we can use vector addition. The magnitude of the resultant vector can be found by taking the square root of the sum of the squares of the boat's velocity and the river's velocity. Mathematically, we have:

Resultant magnitude = √(boat velocity^2 + river velocity^2)

Plugging in the given values, we have:

Resultant magnitude = √(0.75^2 + 1.2^2)

= √(0.5625 + 1.44)

= √2.0025

≈ 1.42 m/s

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The instantaneous velocity of the car at t = 5.0 s is -3 m/s. The negative sign indicates that the car is moving in the opposite direction from the traffic light at that moment.

Instantaneous velocity is the velocity of an object at a specific point in time. It is the rate of change of the object's position at that particular moment, and it is represented by the derivative of the object's position with respect to time. Instantaneous velocity is a vector quantity, meaning it has both magnitude and direction. It can be determined by taking the limit of the average velocity as the time interval approaches zero. It is also the limit of the average acceleration when the time interval approaches zero.

This can be found by taking the derivative of the equation \(x(t) = bt2 − ct3\)with respect to t. The derivative of this equation is \(v(t) = 2bt - 3ct^2.\)Plugging in the given values of b and c, and evaluating the equation at t=5.0s gives the instantaneous velocity of the car.

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We can use the "suvat" method

s is displacement

u is initial velocity

v is final velocity

a is acceleration

t is time

We substitute in what we know...

s = ?

u = 22.5 (the speed/velocity the trucks is initially)

v = 0 (the truck comes to a stop)

a = -2.27 (negative because it is decelerating

t = ?

\(\text{suvat formulae}:\\v = u + at\\s = ut + \frac{1}{2}at^2\\v^2 = u^2 + 2as\\s = \frac{v+u}{2}t\\s = vt - \frac{1}{2}at^2\)

We have \(u\), \(v\), \(a\) and we want to find the time for how long it takes the truck to stop.

We can use \(v = u + at\)

\(v = u + at\\0 = 22.5 - 2.27 \times t\\\frac{-22.5}{-2.27} = t\\t = 9.91...\ \text{s}\)

To find the distance (displacement), we can use \(s = ut + \frac{1}{2}at^2\)

\(s = ut + \frac{1}{2}at^2\\s = 22.5 + \frac{1}{2} \times -2.27 \times 9.91^2\\s = -88.9661935\ \ \text{(we make it positive since you can't have negative distance)}\\s = 88.97...\ \text{m}\)

To find the distance travelled 3 seconds after breaks are applied;

We just use the same formula, but with \(t = 3\)

\(s = ut + \frac{1}{2}at^2\\s = 22.5 \times 3 + \frac{1}{2} \times -2.27 \times 3^2\\s = 12.285\ \text{m}\)

Answer: 1968 cm3

Explanation: You first need to convert all of your dimensions to the same units.

240 mm = 24 cm

20.5 cm = 20.5 cm

0.04 m = 4 cm

Then volume is Length x width x height = 24 cm x 20.5 cm x 4 cm =

Answer: The scenario violates the second law of thermodynamics.

Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.

1) Nucleus is less than the sum of the masses of two protons and two neutrons. 2)  Nucleus is less than the sum of the masses of a nucleus. 3) The third option is greater than. 4) The fourth option is equal to.

1) The mass of a ₂⁴He nucleus is less than the sum of the masses of two protons and two neutrons, all separated from each other.

2) The mass of a ³₂He nucleus is less than the sum of the masses of a ¹₁H nucleus and a ²₁H nucleus, separated from each other.

3) The mass of a ²³⁵₉₂U nucleus is greater than the sum of the masses of a ¹⁴¹₅₆Ba nucleus and a ⁹²₃₆Kr nucleus, and two neutrons, all separated from each other.

4) The mass of a ⁵⁶₂₆Fe nucleus is equal to the sum of the masses of a ²⁶₁₂Mg nucleus and a ³⁰₁₄Si nucleus, separated from each other.

Therefore, 1) Nucleus is less than the sum of the masses of two protons and two neutrons. 2)  Nucleus is less than the sum of the masses of a nucleus. 3) The third option is greater than. 4) The fourth option is equal to.

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Answer:

-20N

Explanation:

The racquet ball will bounce back with the same force.

This is in compliance with newton's third law of motion:

  "action and reaction are equal but opposite"

If the ball hits the wall with an action force of 20N, the reaction force will be -20N.

The negative indicates an oppositely directed force.

A wire is capable of carrying a load W without snapping. It is divided in half, equally. Each component's maximum load capacity is W.

The maximum load supported by the cable is directly proportional to the breaking stress.

Since,

Breaking stress=F/A

where F is the force and A is the cross-sectional area

As we see that the breaking stress is independent of the length of the cable. So, if the cable is cut in two equal parts, the maximum load that can be supported by either part of the cable remains the same as before.

So, the answer would be W.

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Answer:

Explanation:

Reverse the second equation, and change the sign of the enthalpy

Answer:

The resonating frequency of the given RLC circuit is found to be 1.59 KHz

Explanation:

The resonating frequency in a series RLC circuit is the one at which the Inductive Reactance and the Capacitive Reactance of the circuit becomes equal. And the circuit becomes purely resistive. The resonating frequency of a series RLC circuit is given by the following formula:

fr = 1/2π√(LC)

where,

fr = Resonating Frequency = ?

L = Inductance = 2 mH = 2 x 10⁻³ H

C = Capacitance = 5 μF = 5 x 10⁻⁶ F

Therefore,

fr = 1/2π√[(2 x 10⁻³ H)(5 x 10⁻⁶ F)]

fr = 1591.5 Hz = 1.59 KHz

The resonating frequency of the given RLC circuit is found to be 1.59 KHz

The focal length of the concave mirror is approximately option B. 8.20 cm,

To solve this problem, we can use the mirror equation, which relates the object distance (d_o), image distance (d_i), and the focal length (f) of a concave mirror. The equation is:

1/f = 1/d_o + 1/d_i

Given the object distance (d_o) is 12.2 cm and the image distance (d_i) is 25.0 cm, we can plug in these values to find the focal length (f):

1/f = 1/12.2 + 1/25.0

To solve for f, first find the common denominator and combine the fractions:

1/f = (25 + 12.2) / (12.2 * 25) = 37.2 / 305

Now, take the reciprocal of both sides to isolate f:

f = 305 / 37.2

After calculating, we get:

f ≈ 8.20 cm

Thus, the focal length of the concave mirror is approximately 8.20 cm, Therefore the correct option to option b.

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Answer:

(B)False is the answer.

Explanation: