4.0 kg food pack was dropped from a height of 200 m by a helicopter during flood relief operations. At what velocity will the food pack be falling halfway to the

How to calculate time using power and energy

The emf of a battery is equal to its terminal potential difference A) under all conditions B) only when the battery is being charged C) only when a large current is in the battery D) only when there is no current in the battery E) under no

A graph depicts force versus position. What represents the work done by the force over the given displacement? A. The work done is equal to the product of the maximum force times the maximum position. B.

Which of the following statements are true? Check all that apply. a. Electric charge is quantized. b. Two positive charges attract each other. c. A positive charge and a negative charge attract each other. d. Two negative charges repel each other. e.

What animals were delisted in july 2019?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?

Given the two sets, which statement is true? A = {1, 2} B = {1, 2, 3, 4}

The net force acting on an insect falling downward at constant velocity is