A comet is traveling in outer space with a velocity of 2000 m/s. How long will it take to travel 300,000 meters?A) 2000 sB) 0.0006 sC) 6,000,000 s D) 150 s

Over an AC generator, a series connection between a capacitor and a resistor is made. The voltage across the capacitor is 90 degrees behind the current.

Voltage is the pressure from the power source of an electrical circuit that drives charged electrons (current) through a conducting loop, allowing them to perform tasks like lighting a lamp. Briefly stated, voltage equals pressure and is measured in volts (V).

The energy per unit charge is known as voltage, also known as electromotive force. Voltage is the difference in electric potential between two locations, to put it another way. The pace at which an electric charge flows is known as current.

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Answer:

the answer is B.

Answer:

light

Explanation:

you can see stuff in space but cant hear it

A ball starts from rest such that initial velocity, u=0, and final velocity, v = 14 m/s

and the time duration, t = 8 seconds.

To find initial velocity and acceleration, a.

As the ball is at rest, thus initial velocity is zero.

Acceleration is given by the formula,

Substituting the values in the above equation, we get

Hence the acceleration is 1.75 m/s^2

Answer:

24km/h

Explanation:

go it right on ingenuity 2020

Answer:

all are harmful to the body

Answer:

The  value is  \(\mu_k = 0.102 0\)

Explanation:

From the question we are told that

    The initial speed is  \(u = 10 \ m/s\)

    The  distance traveled is  \(d = 50 \ m\)

Generally we can obtain the acceleration using the kinetic equation as follows

     \(v^2 = u^2 + 2as\)

=>   \(a = \frac{v^2 - u^2 }{ 2s}\)

=>   \(a = \frac{0^2 - 10^2 }{ 2 * 50 }\)

=>   \(a = -1 m/s^2\)

The  negative sign shows that the pluck is decelerating

  The force driving the pluck is mathematically evaluated as

       \(F = ma\)

 This force is also equivalent to the frictional force acting on the pluck

So  

      \(ma = m * g* \mu_k\)

=>  \(\mu_k = \frac{a}{g}\)

=>   \(\mu_k = \frac{1}{9.8 }\)

=>   \(\mu_k = 0.102 0\)

Answer:

Explanation:

The heat required to completely boil a certain amount of water is given by the formula:

Q = mL

where Q is the heat required, m is the mass of the water, and L is the specific heat of vaporization of water, which is 2260 J/g.

Using the given values:

m = 1500 g

L = 2260 J/g

Substituting these values into the formula, we get:

Q = 1500 g × 2260 J/g

Q = 3,390,000 J

Therefore, 3,390,000 joules of heat transfer is required to completely boil 1500 g of water into a gas.

The electric potential energy stored in the capacitor is 4.70 x 10^-8 Joules.

The electric potential energy stored in a capacitor is given by the formula:

U = (1/2) * C * V^2

where U is the potential energy in Joules, C is the capacitance in Farads, and V is the voltage across the capacitor in Volts.

In this case, we are given that the capacitor stores 9.40 x 10^-10 C of charge at 50.0 V. However, we are not given the capacitance value. Therefore, we cannot calculate the potential energy directly using the above formula.

To find the capacitance value, we can use the formula:

C = Q / V

where Q is the charge stored in the capacitor and V is the voltage across the capacitor.

Substituting the given values, we get:

C = 9.40 x 10^-10 / 50.0

= 1.88 x 10^-11 F

Now we can use the formula for electric potential energy to find the energy stored in the capacitor:

U = (1/2) * 1.88 x 10^-11 * (50.0)^2

= 4.70 x 10^-8 J

Therefore, the electric potential energy stored in the capacitor is 4.70 x 10^-8 Joules.

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During a 10-second period, a car travels 80 meters. This car typically travels at a speed of 8 m/s.

For instance, if it takes a person 40 minutes to travel 20 miles north, 20 miles south, and finally 20 miles in between, their average speed is 40 miles divided by 40 minutes, or 1 mile per minute. Instead of distance, average velocity takes into account total displacement.

The total displacement must be divided by the total time elapsed in order to determine the average velocity.

average velocity= total displacement/ total time

avg velocity=80/10=8m/s

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Answer:

B

Explanation:

parallel circuits required m

Answer:

It is worth noting that the higher the gravitational energy of an object moving downwards, the lower the kinetic energy, and the lower the kinetic energy of an object moving upwards, the higher its gravitational energy.

Gravitational potential energy is acquired by an object when it has been moved against a gravitational field. For example, an object raised above the surface of the Earth will gain energy, which is released if the object is allowed to fall back to the ground.

The percent yield of this reaction is 80.6%. This means that only 80.6% of the predicted amount of the compound was actually produced, while the remaining 19.4% was lost due to incomplete reactions or other factors.

The percent yield can be calculated as follows:

percent yield = (actual yield / theoretical yield) x 100%

Substituting the given values, we get:

percent yield = (26.1 / 32.4) x 100%

percent yield = 0.806 x 100%

percent yield = 80.6%

A compound is a substance made up of two or more different elements that are chemically bonded together in a fixed ratio. This means that compounds have a unique chemical formula, which describes the types and numbers of atoms that make up the compound.

The properties of a compound are different from those of the individual elements that make it up. For example, water (H2O) is a compound made up of hydrogen and oxygen. Although hydrogen is a gas and oxygen is a gas, water is a liquid at room temperature. This is because the properties of a compound are determined by the arrangement of the atoms and the type of chemical bonds between them.

Compounds are important in many areas of physics, including materials science, chemical engineering, and electronics. They are used to make a wide range of products, from plastics and medicines to electronic devices and batteries. Understanding the properties and behavior of compounds is therefore essential for many areas of research and development.

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the maximum bending stress in the beam is 24 kip/in².

Bending stress is the usual stress that an item withstands when it is exposed to external load at any cross-section. The ratio of the bending moment to the section modulus is another way to define the bending stress.

Given that, Base of the rectangular cross-section area,

Height of the rectangular cross-section area, h=6in=0.5ft

Refer attached free-body diagram,

Applying moment equilibrium at point A

Σ\(M_A\) = 0

−14 (4.5) + R (4.5+4.5+1.5)= 0

10.5 R =63

\(R_A\) = 6 kip

Resolve the force along vertical direction in the above diagram

\(P = R_B + R_A\)

\(14 = R_B +6\\R_B = 8 \ kip\)

From the diagram, it is clearly understood that maximum bending will occur at mid of the beam as compared to the ends, so the maximum bending moment can be calculated as

M = 4.5* \(R_A\)

M = 4.5 * 8

M = 36 kip

From the theory of bending, the maximum bending stress in the beam can be calculated as

σ = M*Y/I

Where I = bh³/12

σ = 3461.53 kip/ft²

σ = 24 kip/in²

Thus, the maximum bending stress in the beam is 24 kip/in².

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Complete question:

The distance between the glass to have the given heat loss is 2.54 m.

The given parameters:

The area of the glass window is calculated as follows;

\(A = 0.6 \times 0.9\\\\A = 0.54 \ m^2\)

The distance between the glass is calculated as follows;

\(Q = \frac{KA \Delta T}{\Delta x} \\\\\Delta x = \frac{kA \Delta T}{Q} \\\\\Delta x = \frac{0.8 \times 0.54 \times 24 }{4.09} \\\\\Delta x = 2.54 \ m\)

Thus, the distance between the glass to have the given heat loss is 2.54 m.

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Answer:

D

Explanation:

The motion of an object can be described by its speed, position, and direction so its all of the above

The magnet affected the block of material next to it because it exerts an attractive or repulsive force on other objects.

Magnets do the retinue things: Attract certain materials, such as iron, nickel, cobalt, certain steels, and other alloys. apply an attractive or repulsive force on other magnets (opposite poles attract, like poles repel).  

Magnetic forces are oblivious forces; they pull or push on objects without touching them. Magnets are only attracted to a few 'magnetic' metals and not all matter. Magnets are attracted to and repel other magnets.

So we can conclude that Materials with a magnetic field can attract other materials with such a field. Materials that are not magnets do not have a net outer magnetic field.

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Answer:

the laws of science or statements based on repeated experiments or observations that describe or predict a range of natural phenomena laws are developed from data and can be further developed through mathematics in all cases they are directly or indirectly based on empirical evidence

Answer: The correct answer is:

the area of the trapezoid under the line

To explain this, let's consider the velocity vs. time graph again. Since the object moves with constant acceleration, the graph will be a straight line with a positive slope. The area under the line represents the distance traveled by the object, which is equal to the displacement if the initial position is zero.

The area under the line is a trapezoid because the velocity is changing over time. The base of the trapezoid is the time interval, and the heights are the initial and final velocities. The formula for the area of a trapezoid is:

Area = (base1 + base2) / 2 * height

where:

base1 = initial velocity

base2 = final velocity

height = time interval

Substituting the given values, we get:

Area = (v_i + v_f) / 2 * t

where v_i = 3 m/s, v_f = 10 m/s, and t is the time interval over which the velocities change.

Therefore, the correct answer is the area of the trapezoid under the line.

Time: s (second)

Mass: kg (kilogram)

Length: m (meter)

The SI units (International System of Units) are a standard system of measurement used in science, engineering, and many other fields. They provide a universal language for expressing and comparing measurements. The SI units are based on seven fundamental physical quantities, and each of these quantities is associated with a specific base unit, which is defined independently of any other unit.

Seven base units of the SI system are:

Length: meter (m)

Mass: kilogram (kg)

Time: second (s)

Electric current: ampere (A)

Temperature: kelvin (K)

Amount of substance: mole (mol)

Luminous intensity: candela (cd)

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Answer:

distance

Explanation:

Speed is the rate of change of position expressed as distance travelled per unit of time

Answer:

the energy of the spring at the start is 400 J.

Explanation:

Given;

mass of the box, m = 8.0 kg

final speed of the box, v = 10 m/s

Apply the principle of conservation of energy to determine the energy of the spring at the start;

Final Kinetic energy of the box = initial elastic potential energy of the spring

K.E = Ux

¹/₂mv² = Ux

¹/₂ x 8 x 10² = Ux

400 J = Ux

Therefore, the energy of the spring at the start is 400 J.

Answer:

Hi I hope this is correct!

Explanation:

You can use this formula to solve this question T = mv^2/R

m = 0.3 kg , v = 6.0 m/s , R = 1.5 m

T = (0.3 kg)(6.0 m/s)^2 / 1.5 m  

  = 7.2 Newtons

Hope this helps! Best of luck <3

According to the give statement:

a)Work done on the gas is 567 J.

b)The change in its internal energy is 167J.

The temperature and condition of a substance are examples of internal energy. For instance, the internal energy of water is influenced by its temperature as well as whether it is in a solid, liquid, or gas state. Due to its condition, liquid water has greater stored energy than copper metal at the same temperatures.

The work done on the gas is evaluated using formulas:

W = -p * ΔV

Only the large volumes which is signified by large data Substituting the known values we obtain

W= 0.8 * 1.01325 * 10⁵ Pa * -1 (-7) * 10⁻³ m³

W = 567 J

Change in Internal energy is given by

ΔU=W - Q

=567−400)

=167J

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Scientists seek to acquire knowledge and understanding of the real world through the formulation, testing, and evaluation of scientific hypotheses (Option C).

Scientific hypotheses are explanations about questions of the real world that can be used to test them by using the scientific method, i.e., by testing them to confirm or reject their assumptions through experimental and observation procedures.

Therefore, with this data, we can see that a scientific hypothesis is formulated and tested by using the scientific method in order to confirm or reject its assumptions and thus build scientific knowledge.

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Answer:

Scientific hypothesis

Explanation:

Answer:

Five examples of locomotor movements are:

Hopping

Galloping

Walking

Running

Skipping

Explanation:

I hope it helps ❤❤

For the following are four electrical components:

a. For components A and B, both of which obey Ohm's law, the current-voltage characteristics would be a straight line passing through the origin. The slope of the line for component B would be steeper than that of component A, indicating higher resistance.

b. The shape of the characteristic for component C, the filament lamp, can be explained by its construction. A filament lamp consists of a filament made of a resistive material, typically tungsten, which heats up and emits light when an electric current passes through it.

c. The component chosen for D, which does not obey Ohm's law, could be a diode. A diode is a two-terminal electronic component that allows the current to flow in only one direction.

For the following are four electrical components:

a. Sketches of current-voltage characteristics:

For components A and B, both of which obey Ohm's law, the current-voltage characteristics would be a straight line passing through the origin. The slope of the line for component B would be steeper than that of component A, indicating higher resistance.

  Current (I)

     ^

     |          B

     |         /

     |        /

     |       /

     |      /

     |     /

     |    /

     |   /

     |  /

     | /

     |/

     +------------------> Voltage (V)

     Current (I)

     ^

     |          A

     |         /

     |        /

     |       /

     |      /

     |     /

     |    /

     |   /

     |  /

     | /

     |/

     +------------------> Voltage (V)

For component C, a filament lamp, the current-voltage characteristic would be a curve that is not linear. It would exhibit a non-linear increase in current with increasing voltage. At lower voltages, the lamp would have low resistance, but as the voltage increases, the resistance of the filament also increases due to the phenomenon of thermal self-regulation. This leads to a slower increase in current at higher voltages.

For component D, a component that does not obey Ohm's law, the current-voltage characteristic could be any non-linear curve depending on the specific component chosen. Examples of components that do not obey Ohm's law include diodes and transistors.

b. The shape of the characteristic for component C, the filament lamp, can be explained by its construction. A filament lamp consists of a filament made of a resistive material, typically tungsten, which heats up and emits light when an electric current passes through it. As the voltage across the filament increases, the temperature of the filament increases as well, causing its resistance to increase. This increase in resistance results in a slower increase in current with increasing voltage, leading to the characteristic non-linear curve observed.

c. The component chosen for D, which does not obey Ohm's law, could be a diode. A diode is a two-terminal electronic component that allows the current to flow in only one direction. It exhibits a non-linear current-voltage characteristic where it conducts current only when the voltage is above a certain threshold, known as the forward voltage. Below this threshold, the diode has a high resistance and blocks current flow in the reverse direction. The characteristic curve of a diode would show negligible current flow until the forward voltage is reached, after which it exhibits a rapid increase in current with a relatively constant voltage.

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Answer:

The car C has KE = 100, PE = 0

Explanation:

The principle of conservation of energy states that although energy can be transformed from one form to another, the total energy of the given system remains unchanged.

The energy that a body possesses due to its motion or position is known as mechanical energy. There are two kinds of mechanical energy: kinetic energy, KE and potential energy, PE.

Kinetic energy is the energy that a body possesses due to its motion.

Potential energy is the energy a body possesses due to its position.

From the principle of conservation of energy, kinetic energy can be transformed into potential energy and vice versa, but in all cases the energy is conserved or constant.

In the diagram above, the cars at various positions of rest or motion are transforming the various forms of mechanical energy, but the total energy is conserved at every point. At the point A, energy is all potential, at B, it is partly potential partly kinetic energy, However, at the point C, all the potential energy has been converted to kinetic energy. At D, some of the kinetic energy has been converted to potential energy as the car climbs up the hill.

Therefore, the car C has KE = 100, PE = 0

Explanation:

max potential your welcome i love helping outhers :)

To better understand crash dynamics we have to look at "the laws of motion."

The laws of motion

The laws of motion were introduced by Sir Isaac Newton in 1687 in his book Philosophiæ Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy"), which defined the laws of motion, or three fundamental laws that govern the movement of bodies. The laws of motion, according to Newton, govern the motion of an object or a system of objects that interact.

It defines the concepts of force and mass, and the fundamental dynamics of motion.The following are the laws of motion:Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. The velocity of an object changes proportional to the force applied to it, and the acceleration of an object is proportional to both its force and its mass. For every action, there is an equal and opposite reaction.

Therefore, these laws are necessary to fully grasp crash dynamics because they explain how objects respond to outside forces that cause them to accelerate or decelerate.

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Answer:

The Big Bang theory predicts that the early universe was a very hot place and that as it expands, the gas within it cools. Thus the universe should be filled with radiation that is literally the remnant heat left over from the Big Bang, called the “cosmic microwave background", or CMB.

Explanation:

The Big Bang theory suggest  that the universe in early stage was at very hot place and which can be expanded, the gas within it cools. It is in an infinite universe and it has no edge.

The Big Bang theory is a cosmological model which explain the existence of the observable universe from the earliest periods to the large-scale evolution.

The model describes the mechanism behind the universe expansion from an initial state of high density and temperature, it is very important concept as a lot of research is going on in this field to find out exactly how the universe began billions of years ago.

The universe began to cool down in order to allow the formation of particles become atoms after its initial phase of expansion,  Primordial elements  such as Hydrogen, Helium, and Lithium are condensed through gravity are formed early stars and galaxies.

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