Answer:
a loud explosive noise caused by the shock wave from an aircraft traveling faster than the speed of sound.
Explanation:
-identifies an electric charge
-it can identify its polarity (positive or negative) if you compare it to a charge that you already know
-can identify the magnitude of a charge (how big of a charge it is)
Answer:
counterclockwise

Explanation:
= Small drive wheel radius = 2.2 cm
= Angular acceleration of the small drive wheel = 
= Radius of pottery wheel = 28 cm
= Angular acceleration of pottery wheel
As the linear acceleration of the system is conserved we have

The angular acceleration of the pottery wheel is
.
The rubber drive wheel is rotating in clockwise direction so the pottery wheel will rotate counterclockwise.
= Initial angular velocity = 0
= Final angular velocity = 
t = Time taken
From the kinematic equations of linear motion we have

The time it takes the pottery wheel to reach the required speed is 
Answer:
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Answer:
Explanation:
Given
mass of ice 
Height of hill 
Neglecting air resistance
As resistance is absent so Energy at top of hill and at the bottom hill is conserved.
Energy at top is equal to Potential Energy

Energy at bottom is equal to kinetic energy at bottom



