Object B has a mass of 8 kg and was lifted at a rate of 3 m/s. What is the kinetic energy of object B?

Plants in the desert, such as the yucca tree below, tend to have very wide root structures. Some yucca tree roots have been known to stretch more than 10 meters away from the trunk.

A household refrigerator with a COP of 1.2 removes heat from the refrigerated space at a rate of 40 kJ/min. Determine the rate of heat transfer to the kitchen air in kilojoules per minute to three significant digits.

How does Newton's third law explain the forces involved when a car hits a concreate barricade

Charge q1 is distance s from the negative plate of a parallel-plate capacitor. Charge q2=q1/3 is distance 2s from the negative plate. What is the ratio U1/U2 of their potential energies?

After a large snowstorm you shovel 2000 kilograms of snow off your side walk in 1 hour. you lift the shovel to an average height of 1.25 meters while you are piling the snow in your yard. how much work did you do?

Where is the deepest part of the ocean A. continental shelf B. trench C. volcanic island D. continental rise

A weightlifter exerts an upward force on a 1000-N barbell and holds it at a height of 1 meter for 2 seconds. Approximately how much power does the weightlifter exert on the barbell during this time?

Assuming no friction form air, how far will a dropped rock fall in 10 seconds

A person walks 25.0° North of East for 3.10 km. How far would she have to walk due north and due east to arrive at the same location?

Which elements exist naturally as diatomic molecules