How long would it take for a car to travel 500m if it was moving at a constant speed of 50.0 km/h?

Answer:

Acceleration occurs when an object changes its VELOCITY or DIRECTION or both

Explanation:

Answer:

5.6mls

Explanation:

Answer:

A. Direction

Explanation:

Velocity is the speed of something heading in a certain direction. If speed or direction changes, the velocity changes.

Answer:

the final velocity of the two blobs after collision is 3.21 m/s.

Explanation:

Given;

mass of first blob, m₁ = 9 kg

mass of the second blob, m₂ = 5 kg

initial velocity of the first blob, u₁ = 5 m/s

initial velocity of the second blob, u₂ = 0

Let the final velocity of the two blobs after collision = v

Apply the principle of conservation linear momentum to determine v;

m₁u₁ + m₂u₂ = v(m₁ + m₂)

9 x 5   +    5 x 0 = v(9 + 5)

45 = 14v

v = 45 / 14

v = 3.21 m/s

Therefore, the final velocity of the two blobs after collision is 3.21 m/s.

Answer:

Glowing

Explanation:

Answer:

yeah its correct

Explanation:

As the ball spins, friction between the ball and air causes the air to react to the direction of spin of the ball. ... Therefore, when a soccer player kicks the ball right of center the ball spins counter-clockwise and the Magnus force acts left, causing the ball to curve left.

Answer:

A just took the quiz on edge

Explanation:

In the supply curve, when the price of a good increases, A. The quantity of goods that are produced increases.

Supply simply means the quantity of goods and services that a supplier is willing to sell at a particular place, price and time.

In this case, when there's an increase in the price of goods, it should be noted that producers will supply more of the goods. This is done in order to generate more revenue.

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Answer: in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal.

Explanation:

Answer:

one direction: out of the positive terminal of a battery and back into the negative terminal.

Explanation:

Electrical engineers say that, in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal. Electronic technicians say that electricity flows the other direction: out of the negative terminal of a battery and back into the positive terminal.

The work done  is the product of the force and resulted displacement. The frictional force between the box and floor is 119.5 N.

Force is external factor acting on a body to make a change in the state of an object . According to Newton's second law of motion, force is the product of mass and acceleration.

The work done in physics is the product of force acting on a body and its displacement. Therefore, the force which result in a displacement of the body is said to be work done on the object.

Here, the work done by frictional force is 550 J and displacement is 4.6 m.

Therefore, the force = work done / displacement

                                  = 550 J/ 4.6 m

                                  = 119.5 N.

Hence, the force between the floor and box will be 119.5 N.

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Answer:

In classical mechanics, Newton's laws of motion are three laws that describe the relationship between the motion of an object and the forces acting on it. The first law states that an object either remains at rest or continues to move at a constant velocity, unless it is acted upon by an external force.

Explanation:

Answer:

water

is missing in above equation

hope it helps

Answer:

F = 3.15 N

Explanation:

Given electric charge, q = 6.3 μC

The magnitude of electric field, [tex]E=5\times 10^5\ N/C[/tex]

We need to find the electric force on the charge due to the electric field. The electric force is given by :

F = qE

Putting all the values,

[tex]F=6.3\times 10^{-6}\times 5\times 10^5\\\\F=3.15\ N[/tex]

So, the required force on the charge is 3.15 N.

Answer:

The statement which best explains the difference between the light waves travelling through a vaccuum and light waves travelling through a medium  is -"When light waves travel through a vacuum, they travel faster than when they travel through a medium."

Explanation:

Light waves are faster in vacuum because The refractive index of vacuum is the lowest since there is no barrier in the way of light propagation in vacuum. Demonstrate that the maximum speed of light in vacuum.

In a vacuum, light flies at 186,283 mph. Light flies at 186,200 mph in the air, or 56 mph slower. In another medium, such as water, light travels at 139,712 mph, or around 3/4 of the speed of light in a vacuum.

LIGHT WAVES -: Light waves are a form of electromagnetic wave that includes both visible and invisible to the naked eye wavelengths on the electromagnetic spectrum. The average human eye can see light with wavelengths ranging from 390 to 700 nanometers, or nm.

Forms of light waves comprises of Radio waves , microwaves , infrared waves , visible light etc.

When light waves travel through a vaccume, they travel faster than when they travel through a medium

A light wave is an electromagnetic wave which travels through the vacuum of outer space. Light waves are produced by vibrating electric charges., An electromagnetic wave is a transverse wave which has both an electric and a magnetic component.

Light waves are faster in vaccum because the refractive index of vaccume is the lowest since there is no barrier in the maximum speed of light in vaccum.

In vaccum light travels at 186283 mph in air 186200 mph in other medium like water at 139712 mph.

Hence  light waves travel through a vaccum, they travel faster than when they travel through a medium

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Answer:

So, when an electrical charge passes through a resistor, some of that electrical energy is transferred into heat, increasing the temperature. This extra energy causes the particles in the resistor to vibrate more. With these particles moving more, it is more difficult to for the electrons to move through the resistor.

Answer:

They are gaining energy, can move and slide past each other.

Explanation:

Because as ice melts, the molocules gain energy/heat which warm them up and are able to slide/move apart from each other.

Answer:

K.E. = 1/2mv^2

Explanation:

v is velocity (a vector) not speed (a scalar) but they have the same magnitude

Answer:

Explanation:

i )

area of small piston = 0.2 m²

Force = 100 N

pressure created on small piston

= 100 / .2 = 500 N/m²

According to Pascal's law , this pressure will be transmitted to larger cylinder .

area of larger cylinder = 5 m²

ii )

pressure = force / area

force in the large cylinder = pressure x area of large cylinder

= 500 x 5

= 2500 N .

Answer:

The answer is D

Answer:

102.04kg

Explanation:

(1000kg*m/s^2)/(9.8 m/s^2)

Answer:

Aluminum has the highest atomic number

Answer:

Explanation:

7.Conduction

Assuming the pot is cold and the heating element is hot: Heat will be transferred from the element to the pan via conduction because they are in contact with one another.

8.  C The moon

9.  A heat, light and sound energy.

When fireworks explode, chemical energy is transformed into thermal energy, mechanical energy, radiant energy, and sound energy.

10.A 70% light energy, 30% thermal energy

When the flashlight is turned on, the chemical energy is first transformed into electrical energy and then into light energy.

If number 10 is not correct then the answer is  C.

Answer:

Light.

Sound.

Heat.

Energy.

Gravity.

Explanation:

Answer:

KE increases and PE decreases.

Explanation:

POTENTIAL ENERGY (PE):

The potential energy of the rock depends upon the height of the rock, as given by the following formula:

P.E = mgh

Therefore, the potential energy will be highest at the initial point due to the highest height attained by rock. As the rock falls, its height will decrease as a result its potential energy will also decrease.

KINETIC ENERGY (KE):

The kinetic energy of the rock depends upon the velocity of the rock, as given by the following formula:

[tex]K.E = \frac{1}{2}mv^2[/tex]

Therefore, the kinetic energy will be zero at the initial point due to the zero velocity of the rock. As the rock falls, its velocity will increase as a result its kinetic energy will also increase.

Hence, the correct option will be:

KE increases and PE decreases.