PHYSICS HIGH SCHOOL

A car slams on its breaks,producing friction between the tires and the road.Into which type of energy is the mechanical energy of the car converted?

Answers

Answer 1
Answer: the answer is Heat Energy
Answer 2
Answer:

its is turning into electrical energy

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The strength of the electric field 0.5 m from a 6 µC charge is N/C. (Use k = 8.99 × 109 N•

Answers

The formula for Electric Field Strength:

E = Q /(4πε₀r²)

Note:

1 /(4πε₀) = k = 8.99 * 10⁹ Nm²/C²

Q = 6 μC = 6 * 10⁻⁶ C.          r = 0.5m

E = kQ / r²

E = (8.99 * 10⁹ * 6 * 10⁻⁶) /(0.5²)       Use a calculator

E = 215.6 * 10³  N/C

Electric field strength = 215 600 N/C.

I hope this helps.

The intensity of radioactive sample is commonly measured using a(n) _____.

Answers

a gieger counter is used

Suppose a log's mass is 5 kg. After burning, the mass of the ash is 1 kg. explain what May have happened to the other 4 kg

Answers


I think the "missing mass" may have escaped the site of the
conflagration in the form of hot, invisible gases, and in the form
of all the tiny particles in the smoke.

If you divide the mass of a substance by its volume, you can find its density. Please select the best answer from the choices provideda. True
b. False

Answers

Answer: True

Explanation: density is a measure of the mass of matter contained by a unit volume. So, dividing the mass in grams, of any substance by its volume in centimeter cube, gives it's density in grams per centimeter cube (g/cm³)

It is True. To find the density you must divide the mass by the volume 

What forces are acting on a book lying on the table? Are action-reaction forces involved in this situation?

Answers

There is a weight force acting on the book downwards. There is a normal contact force also on the book upwards. These are equal and opposite. These two force are NOT an action-reaction couple (they are different types, they both act on the book)

Why do the kites and eagles fly without flapping their wings?

Answers

Answer:

because they both have large area to capture air

Answer:

Because they have a large surface area to capture moving air when going at a certain speed.

Explanation:

When your trying to fly a kite and the wind isn't that much, you have to run so that the kite can come in contact with the fast moving air which pushes the kite to go up. Just like a eagle because when a eagle is trying to fly, it has to first flap its wings to push air downwards so that it can create lift and at a certain altitude, the eagle doesn't have to flap it's wings though it tilts its body downwards a little so that gravity can do the work, so the eagle is basically gliding downward.

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Two men decide to use their cars to pull atruck stuck in mud. They attach ropes and one pulls with a force of 515 N at an angle of 31◦ with respect to the direction in which the truck is headed, while the other car pulls with a force of 926 N at an angle of 25◦ with respect to the same direction. What is the net forward force exerted on the truck in the direction it is headed?
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