if the frequency of a sound wave in air remains constant, its energy can be varied by changing its what

A 4,000-kilogram truck travels in a straight line at 10.0 m/sec. What is its momentum?

In addition to plate tectonics, what is the other main driving force of the rock cycle? A. Density B. Water Flow C. Texture Change D. Lahars

A water molecule perpendicular to an electric field has 1.40*10-21 J more potential energy than a water molecule aligned with the field. The dipole moment of a water molecule is 6.2*10-30Cm.

A circular space station has a diameter of 1,700 meter. The station rotates to simulate artificial gravity on the inside. What must the period be of the space station in order to simulate earths gravity?

A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.64 10-2 kg/s. the density of the gasoline is 735 kg/m3, and the radius of the fuel line is 3.43 10-3 m.

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth

A battery applies 45 volts to a circuit, while an ammeter reads 10 ma. later, the ammeter reading drops to 7 ma. assuming the resistance has not changed, the voltage must have

A 150-kg object takes 1.5 minutes to travel a 2,500 - meter straight path. It begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s. What is the acceleration?