The transfer of heat from the Sun is in the form of thermal radiation (also called infrared radiation)
The transfer of heat at the person’s feet is by thermal conduction. During the day the sand will be hot so if you step on it with bare feet there will be conduction of heat to the feet.
Potential energy is highest when the car is released at the top of the ramp. The correct answer is option C
Potential energy is the energy possessed by a body when the body is at rest. Potential energy is at time called gravitational potential energy which as a product of mass of the body, acceleration due to gravity and the height attained by the body. That is,
P.E = mgh
When a car is moving down a ramp, the potential energy of the car can never remain the same except the car stop at a certain point.
Whenever a car is moving down a ramp, the potential energy of the car will be highest when the car is release at the top of the ramp. And lowest when the car reaches the bottom of the ramp.
The statement that is correct about the potential energy of a car moving down a ramp is:
Potential energy is highest when the car is released at the top of the ramp.
Therefore, the correct answer is option C
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Answer: PAPPER:D
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Answer:
because when the plant inhales c02 it exhales oxgen
Explanation:
The correct answer to the question is direct current i.e a battery produces direct current which is the current that flows in only one direction.
EXPLANATION:
Before coming into any conclusion, first we have to understand the types of current. There are generally two types of current which are known as direct current and alternating current.
Direct current:
A direct current is the current which moves in one direction only. It may be a steady current or a pulsating direct current.
A steady current is a time independent current i.e its magnitude is constant with time. It is also known as a stationary current. For instance, the current flowing through a battery.
A pulsating dc current is a type of dc current in which the magnitude of the current changes with time, but moves in one direction. For instance, the current produced in a junction diode rectifier.
Alternating current: Alternating current is the type of fluctuating current whose magnitude changes continuously and direction changes periodically.
In the given question, the current produced in a battery is flowing in one direction only.
Hence, the correct answer to the question will be direct current.
