Work is required to lift a barbell. How many times more work is required to lift the barbell three times as high

Exactly 3.0s after a projectile is fired into the air from the ground, it is observed to have a velocity v = (8.4 i^ + 4.9 j^) m/s, where the x axis is horizontal and the y axis is positive upward. Determine the horizontal range of the projectile.

Water flows over a waterfall that is 20 m high at the rate of 4.0 * 104 kg/s. a. How much KE does the water gain each second when it reaches the bottom of the waterfall? b.

When heating food, why do you think the oven gets hot to the touch while the microwave does not?

An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen.

When scientists record the volume of a gas, why do they also record the temperature and the pressure?

A solid spherical insulator has radius r = 2.5 cm, and carries a total positive charge q = 8 * 10-10 c distributed uniformly throughout its volume. find the magnitude of the electric field |e| at a radius of 5 cm from the origin (i. e.

What are some things cyclists do to reduce friction?

What is used to find true north on a compass? a. equator c. magnetic declination b. prime meridian d. cardinal directions

How does the sun's heat affect the humidity of a place

Which "spheres" are interacting when water evaporates from plants