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.

An ice cream machine produced 44 ice creams per minute. After reconditioning, its speed increase to 55 ice creams per minute. By what percent did the speed of the machine increase

To counter the effects of centrifugal force and reduce vehicle traction it is important to to counter the effects of centrifugal force and reduce vehicle traction it is important to

In a tug-of-war between two athletes, each pulls on the rope with a force of 600 N. Part A - What is the tension in the rope?

21) An aspirin has a mass of 325 mg. If the mass of the aspirin could be converted to energy with 100% efficiency, how many joules of energy would be produced?

if you were to increase either mass or speed by a unit of 1 in a joules calculation, which would give you more energy?

An elevator has mass 600 kg, not including passengers. the elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s, and it is driven by a motor that can provide up to 40 hp to the elevator.

When two objects collide and stick together, what will happen to their speed, assuming momentum is conserved? They will move at the same velocity as whichever object was fastest initially.

Which planet shows evidence of water erosion?

What do nuclear fission and nuclear fusion have in common?

When plug prongs are connected to the metal case of an appliance, a part that should always be placed next to the case is a a. flat metal washer. b. hexagonal aluminum shoulder. c. steel nut. d. mica washer.