Which property of the wave does the value of two per second describe?

A ball is dropped from a 100-m tall building. Neglecting air resistance, what will the speed of the ball be when it reaches the ground 4.5 seconds later?

A car drives around racetrack for 30 seconds. What do you need to know to calculate the average velocity of the car

You have a horizontal grindstone (a disk) that is 85 kg, has a 0.31 m radius, is turning at 88 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in the radial direction.

Which of the following statements describes how a heat pump works? 1. The heat pump decompresses gas to warm and cool air. 2. The heat pump compresses gas to warm air and decompresses gas to cool air. 3.

Calculate the average induced voltage between the tips of the wings of a Boeing 747 flying at 940 km/hr above East Lansing. The downward component of the earth's magnetic field at this place is 0.7·10-4 T.

the average wavelength in a series of ocean waves is 15.0 m. A wave crest arrives at the shore on average ever 20 seconds, so the frequncy is 0.050 Hz. What is the average speed of the wave?

A firework is ignited, and explodes with a flash and a loud bang as it is blown apart. The system consists of: the firework, the Earth, and the air. Which choice best describes how energy is transformed in the system?

Eclipse of the sun occurs (A). When the moon is between the sun and the earth. (B). When the earth is between the moon and the sun. (C). When the sun and the earth are parallel to each other. (D). When the moon is directly above the earth. (E).

If a decision was made to increase agriculture fertilizer application, which would be an example of a negative trade-off based on this decision? A) excessive nutrients B) farm profits increase C) increase crop production D) consumer prices decrease

If two waves collide and form a temporary smaller wave, the interference is?