How high would a 20 kg mass have to be raised to have a gravitational potential energy of 1,000 J?

A child pushes horizontally on a box of massmwhich moves with constant speedvacrossa horizontal floor. The coefficient of frictionbetween the box and the floor isμ. At what rate does the child do work on thebox? 1. P=μ m g 2. P=m g v

Bob is pushing a box across the floor at a constant speed of 1.4 m/s, applying a horizontal force whose magnitude is 65 N. Alice is pushing an identical box across the floor at a constant speed of 2.8 m/s, applying a horizontal force.

Identify what happens to light in this model of the greenhouse effect. incoming solar radiation reflected back to space absorbed by Earth's surface absorbed by the atmosphere

Which was not a feature of the northwest ordinance of 1787

A stone is thrown vertically upwards with an intinal velocity of 20 m/sec. find the maximum height it reaches and the time by it reachthe height (g=10 m/sec).

Which formula is used to calculate the mass of an object if the force and acceleration are known? a: m = Fa b: m = F/a c: m = a/F d: m = F - a

The circulatory system keeps the body and its tissues continuously oxygenated. It does this by having A) veins to carry both oxygenated blood to the tissues and deoxygenated blood to the lungs.

What is the "atomic mass" of an atom?

What type of energy comes from the food that we eat?

Which of the following are vector quantities? check all that apply. a. time b. displacement c. force d. mass