6. If a car went a distance of 225 kilometers in 4

hours, what is the speed of the car?

a 56.25 km/h

b. 900 km/h

c. 450 km/h

d. 0.0178 km/h

When an apple is cut, it often turns brown. What does the color change indicate? A. physical change only B. chemical change only C. physical and chemical changes

Describe how you determine if an object has kinetic or potential energy

A particle that has mass m and charge q enters a uniform magnetic field that has magnitude B and is directed along the x axis. The initial velocity of the particle is in the xy plane.

What is the kinetic energy of a 25 kg object moving at a velocity of 5 m/s?

In the solar panel system presented in the video, which of the following was necessary to generate usable electrical current for a home? A - Electrical energy had to be stored in batteries for several days. B - DC power had to be converted to AC.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?