A girl lifts a 160-N load to a height of 1 min 0.5 s. How much power is used to lift the load?

A. 320 W

B. 80 W

C. 32 w

D. 160 W

What was the change in internal energy (chemical energy plus thermal energy) of the person pulling the block?

An 85-kg rock climber, when reaching the summit, built up 250,000 J of gravitational potential energy. How high did the climber go?

Archaeologists find an object that is known to have been created 18,000 years ago. Measurements indicate that 1000 atoms of 14C are present in the object. How many atoms of 14C were present when the object was made?

How are producers and consumers different?

Which number should be placed in the blank to make the equation balanced Xe+___F2=XeF2?

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series