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Maurinko [17]
3 years ago
10

A plate glass window (n = 1.5 has a thickness of 3.6 mm. how long does it take light to pass perpendicularly through the plate?

Physics
1 answer:
Artyom0805 [142]3 years ago
8 0
Hope this helps you.

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As 390 g of hot milk cools in a mug, it transfers 30,000 J of heat to the environment. What is the temperature change of the mil
kotykmax [81]
The correct answer is 19.72 °C. The first step is to determine the amount of heat that was lost per gram (30,000 J) / (390 g) = 76.92 J/g. Then to determine the temperature change, divide 76.92 J/g with the given specific heat of milk (76.92 J/g) / (3.9 J/g°C) = 19.72 °C.
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3 years ago
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A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off. What force does the wall exert on
Galina-37 [17]
The wall exerts a force of equal magnitude but in the opposite direction. So the force by the wall is 10 N to the right.
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3 years ago
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What provides the force on the person in the passenger seat?
podryga [215]

The forces that make a passenger speed up, slow down, or
turn a curve are the same forces that have the same effect
on the driver and anybody else in the car.

-- Speeding up . . .

              the back of the seat
              friction between the car seat and the seat of your pants

-- Slowing down . . .

              the seat belt
              friction between the car seat and the seat of your pants

-- Turning away from a straight line . . .
   
              the seat belt
              friction between the car seat and the seat of your pants
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6 0
3 years ago
As an object moves from point A to point B only two forces act onit: one force is nonconservative and does -30 J of work, the ot
Romashka-Z-Leto [24]

To solve this problem we will apply the principles of energy conservation. On the one hand we have that the work done by the non-conservative force is equivalent to -30J while the work done by the conservative force is 50J.

This leads to the direct conclusion that the resulting energy is 20J.

The conservative force is linked to the movement caused by the sum of the two energies, therefore there is an increase in kinetic energy. The decrease in the mechanical energy of the system is directly due to the loss given by the non-conservative force, therefore there is a decrease in mechanical energy.

Therefore the correct answer is A. Kintetic energy increases and mechanical energy decreases.

7 0
3 years ago
What is kinetic energy?
Naya [18.7K]


 kinetic energy is Movement energy

think of it like the Xbox Kinect

3 0
3 years ago
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