When traveling past an observer with a relative speed v, a rocket is measured to be 9.10 m long. when the rocket moves with a relative speed 2v, its length is measured to be 4.90 m?

How can you use Newton's second law to find force

A U-tube is open to the atmosphere at both ends. Water is poured into the tube until the water column on the vertical sides of the U is more than 10 cm deep. Then, oil with a density of 950 kg/m3 is poured into one side, until the column of oil is 6.

Which statement is true? Voltage varies throughout a parallel circuit. Voltage remains the same throughout a parallel circuit.

On the moon, all free-fall distance functions are of the form s (t) = 0.81t^2 where t is in seconds and s is in meters. An object is dropped from a height of 200 meters above the moon. After 9 sec, consider parts (a) through (d) below.

A 3 kilogram cat is resting on top of a bookshelf that is 1 meters high. What is the cat's gravitational potential energy relative to the floor?

What causes the lines to look bent when veiwed through the glass of water

The maximum value C = 3x + 2y to the following const X>0 Y>0 X+3y<15 4x+y<16

A ping pong ball has a mass of about 2.45 grams. Suppose that Forrest Gump hits the ball across the table with a speed of about 4.00 m/s. What is the ball's KE?

What is the average acceleration of the particle between 0 seconds and 4 seconds?

How many lenses does a compound microscope have