A force of 11n is applied to the handle of a screw driver being used to pry off the lid of a paint can. what is the efficency of the screw driver.

Why do paradigms change over time

The acceleration due to gravity on the surface of planet X is 19.6 m/s2. If an object on the surface of this planet weighs 980.0 newtons, what is the mass of the object? A 50.00 kg B 100.00 kg C 490.0 N D 908.0 N

In the table below, which statement would best fill the missing box under isolated systems? Open system Matter freely moves Energy freely moves Isolated system Matter does not freely move A-Energy is variable b-energy is not exchanged C-Energy

How would you describe the elevation and relief of a plain

Identify the objects that you would place into each group. A. wodden logs B. wrench C. plastic button D. cotton balls E. pin F. apple v

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite

Oxygen makes up the largest part of living cells at 65%. What is the percentage of the second-most abundant element in living cells?

Acceleration is defined as the rate of change for which of the following? A. time B. velocity C. position D. displacement