By applying a force of 50N, a pulley system can lift a box with a mass of 20 kg. What is the mechanical advantage of the pulley system?

The oxygen you breathe is made up of two oxygen atoms bound together why is oxygen molecule but not componud

Ice. glass. bottel. metal

Rutherford discovered that: atoms are mostly empty space with a positively charged core atoms have negative charges scattered within a sphere of positive charge atoms are mostly empty space with a neutrally charged core atoms are mostly empty space

A loaded ski lift pulls 20 chairs with people sitting in them up 200 meters. Each chair with a person has 250 kg of total mass. How much power does it take to lift them if the ride takes 10 minutes? A. 16,333 W B. 163,333 W C. 980,000 W D.

Which receptor cells most directly enable us to distinguish different wavelengths of light?

What investigations provide large amounts of information about a wide range of variables.

Why would Sodium (Na) and Chlorine (CI) want to form a lonic Bond? -to achieve a full inner valence shell -to achieve a equal amount of protons & electrons in their nucleus -to achieve an stable amount of protons & neutrons in their nucleus -to

A digital thermometer reads 15 degrees Celsius, what is the uncertainty?

Determine the magnitude of the effective value of g⃗ at a latitude of 60 ∘ on the earth. assume the earth is a rotating sphere.

What characteristic of a planet determines the acceleration due to gravity on it?