What is the main purpose of a simple machine?

Calculate the amount of energy released per gram of peanut burned

A singer raises his pitch one octave. what quality of the sound wave has changed?

Wind is realted to the movement of warm and cold air masses. Which kind transfer does this represent? A.) Convection B.) Conduction C.) Radiation D.) Absorbption

A student touches sphere x and moves it close to, but not touching sphere y. What are the natures of the charges left on the two sphere? Sphere X Sphere Y A. positive positive B. no charge no charge C. positive negative D. negative positive

What is the name of the force that is a combination of all forces that act on an object?

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