Answer:
E =17,280 J
Explanation:
Since the voltage drops linearly from 6V to 4V, the average is 5V. The energy delivered is .
V is the average of initial and fianl voltage
A is the current passing
t is the time in which current is passed
E=V*A*t = 5*0.015*(64*3600) = 17,280 J
Radiator. A radiator puts warm air out at the top and draws in cooler air at the bottom. steaming cup of hot tea - The steam you see when drinking a cup of hot tea indicates that heat is being transferred into the air. ice melting/Ice melts because heat moves to the ice from the air
Answer:
Unbalanced forces change the motion of an object. If an object is at rest and an unbalanced force pushes or pulls the object, it will move. Unbalanced forces can also change the speed or direction of an object that is already in motion.
Momentum and inertia,
Momentum=P. P=MV. M=mass and V=velocity. Mass is related to inertia so inertia=F. F=MA. A=acceleration.
Answer: <u><em>C. Steel</em></u>
Explanation: <em><u>When a sound wave travels through a solid body consisting</u></em>
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<em><u>of an elastic material, the velocity of the wave is relatively</u></em>
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<em><u>high. For instance, the velocity of a sound wave traveling</u></em>
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<em><u>through steel (which is almost perfectly elastic) is about</u></em>
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<em><u>5,060 meters per second. On the other hand, the velocity</u></em>
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<em><u>of a sound wave traveling through an inelastic solid is</u></em>
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<em><u>relatively low. So, for example, the velocity of a sound wave</u></em>
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<em><u>traveling through lead (which is inelastic) is approximately</u></em>
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<em><u>1,402 meters per second.</u></em>
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