A backpack has a mass of 8 kg. It is lifted and given 54.9 J of gravitational potential energy. How high is it lifted? Acceleration due to gravity is g = 9.8 m/s2.

List two characteristics used to classify air masses.

Which of the following is not an example of a cognitive process A. memory B. dreams C. perception D. sleep

What is the best description of the constructive inference of light? a. a longitudinal wave meets a transverse light wave b. two waves have the same direction of displacement c. two waves have displacement in opposite directions d.

Which of the following is untrue of water? a. It is a non-polar molecule. b. It has strong surface tension. c. It is the only natural substance to exist as a solid, liquid, and gas at normal temperatures on Earth. d.

What are the starting materials for nuclear fission

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