10/13/21

#### A block of unknown mass is at rest on a smooth, hotizontal surface. A horizontal force of 47 N causes the block to accelerate at 4.2 m/s2. What is the weight of the block?

A block of unknown mass is at rest on a smooth, hotizontal surface. A horizontal force of 47 N causes the block to accelerate at 4.2 m/s2. What is the weight of the block?I know there are two... more

10/05/21

#### When standing on the edge of a cliff that is 125 meters high, you through a phone at an angle of 65.0 degrees above horizontal at a speed of 12.32 meters per second.

-How long is it in the air? -How far does it go in the horizontal direction?-What maximum height does it reach?

10/05/21

#### Time Period for Pendulum

For an object that is attached to a string and sways back and forth (pendulum), does the time period depend on the angular amplitude of the oscillation?

10/01/21

#### ...A 1169 kg car accelerates from

A 1169 kg car accelerates from 67.26 m/s to 93.84 m/s in 12 s. How much power does that require?

09/26/21

#### Calculate momentum

An electron's wavelength is 3.0×10^−7m. What is its momentum?

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