A child does 350J of work while pulling a box from the ground up to his tree house with a rope. The tree house is 5.2 m above the ground. What is the mass of the box? A) 4.1 kg B) 6.9 kg C) 6.2 kg D) 5.2 kg

Which of these is an example of a chemical change? a. leaving cheese out to get moldy b. smelling sprayed perfume c. feeling ice melt on your skin d. crushing ice with a hammer

Select the true statement regarding first-order neurons. a. First-order neurons originate in the CNS. b. First-order neuron cell bodies reside in a ganglion. c. First-order neurons descend with motor commands. d.

What is the velocity if your going 105 miles every 10 minutes

Four students are comparing vectors and scalars. The chart contains each students statements about vectors and scalars

The atomic number of a nucleus decreases during which nuclear reactions?

A fountain of water and steam that erupts from the ground

A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over the edge of a building 120 ft high. how much work is done (in ft-lb) in pulling half the rope to the top of the building?

Does adding a neutron to an atom's nucleus makes it an ion?

What is the difference between a fault-block and upwarped mountains?

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.