An object of mass 12kg is held at a weight of 5m above the ground for 30s. Calculate the workdone during this period.

As demonstrated by the Doppler Effect, why does sound increase in pitch as a sound source approaches you? A. Object vibrates slower when they move forward B. The wave is farther apart because the object is moving toward you C.

Describe an application where a parallel circuit might work better than a series circuit

Pathogens are A. disease causing organisms B. Stressors C. Factors that may eliminate stress D. diseases that predispose people to stress

In a closed system, the volume of a gas is not related to the volume of its enclosure. a. True b. False

What is the name of the meteorologist who proposed the concept of continental drift? A) Charles Darwin B) Alfred Wegener C) Salaman Kahn D) Albert Einstein

A farmer had 15 sheep, and all but 8 died. How many are left?

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?