Compared to some original speed, how much work must the brakes of a car supply to stop a car moving four times as fast? How will the stopping distance compare?

A boulder on the mythical planet mongo drops off a cliff and falls from rest 1000 m in 10.0 s. (A) what's the initial speed of the Boulder? (B) determine the acceleration due to gravity on mongo. Ignore friction.

For which job would a noise canceling device be the most beneficial? a doctor detecting diseases a veterinarian studying injuries in animals a food scientist testing the preservation of food a carpenter using saws and cutting tools

What occurs when a part of your body is subjected to extreme or constant pressure, such as from a sharp or hard object.

Summarize how the sign of the charge affects the direction of the force (attraction or repulsion) in two complete sentences or more.

A grinding wheel is a uniform cylinder with a radius of 7.80 cm and a mass of 0.550 kg. Part A Calculate its moment of inertia about its center. Express your answer to three significant figures and include the appropriate units.

Acceleration is a vector quantity. O O A. True B. False

What will happen to the brightness of a string of bulbs hooked up in series when you increase the number of bulbs in the string? A. Each light in the string will get brighter. B. Each light in the string will get dimmer. C.

What are the two factors that influence the composition of beach material

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?