Which of the following is an example of a device that uses a wheel and axle?

Check all that apply

A. frisbee

B. light bulb

C. doorknob

D. bicycle

(multiple answers)

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What does it mean when someone says that knowledge cannot be assessed or measured without demonstration? How does this relate to academics?

Why don't you feel a gravitational force between you and your desk

A 5 kilogram cat is resting on top of a bookshelf that is 3 meters high. What is the cat's gravitational potential energy relative to the floor? Joules

The density of sugar is 1.59 g/cm3. the mass of a sample is 4.0 g. find the volume of the sample

How much force is needed to accelerate an object of mass 90 kg at a rate of 1.2 m/s2? 0.013 N 75 N 108 N 1080 N

No work is done on an object when a force acting on the object does not move it. True False

wavelength of a light whose second-order dark band forms a diffraction angle of 15.0° when it passes through a diffraction grating that has 250.0 lines per mm

If a fully loaded shopping cart has a head-on collision with an empty cart both moving at the same speed toward each other, which cart experiences the greater force? The greater impulse? The greater change in momentum? The greater acceleration?