When designing an experiment, it is important to make sure your hypothesis is

A) creative and observable.

B) testable and observable.

C) reliable and creative.

D) valid and testable.

When earthquakes produce vibrations called waves, how do those waves travel?

The mechanic hoisted the car upward at a constant speed

If the efficiency of a lever is 30% and 560 J is used to move the lever, what is the work output? A) 18.7J B) 168 J C) 1,867 J D) 16,800 J

What does a food chains show?

If two waves are traveling at the same speed, which statement will be true about their wavelengths? A. The wave with higher frequency will have shorter wavelength. B. The wave with lower frequency will have shorter wavelength. C.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?

A wave has a wave length of 2 m and a frequency of 500 Hz, what is its speed?

Can anything block a magnet's force feild?