Challenge: a hammer is dropped on planet x. if the hammer has a mass of 3 kg and a weight of 9 n, what is the gravitational acceleration of planet x and is it more or less than that of earth?

Which subatomic particle is electricity neutral and found in nucleus of an atom?

A police car moving at 36.0 m/s is chasing a speeding motorist traveling at 30.0 m/s. The police car has a siren that emits sound at 3550 Hz. What is the frequency that the motorist hears?

Tech A says quartz crystals under mechanical stress will produce a voltage. Tech B says the piezoelectric principle is used in coolant temp sensors. Who is correct?

Whats the distance between earth and the sun

What force is used to make the back-and-forth motion of a swing higher? A. scrape B. pull C. push

What property indicates a star's temperature? A size B color C composition D brightness i forgot lol

Locomotor movement applies to which of the following motions running squatting bending twisting

Which of the following is a feature of the sun's radiation? A. It cannot travel through air. B. It cannot travel through vacuum. C. It is made up of rays of the same frequency. D. It is made up of rays of different wavelengths.

determine the pressure exerted on the surface of a submarine cruising 175 ft below the free surface of the sea. assume that the barometric pressure is 14.7 psia and the specific gravity of seawater is 1.03.

9. An astronaut of mass 90 kg walks in space outside her spaceship and receives a 30-N force from a nitrogen spurt gun. What acceleration does she experience?