You exert a 100-N force on a pulley system to lift 300 N. What's the mechanical advantage of this system? How many sections of rope support the weight?

What are the products of the combustion of a hydrocarbon? carbon and oxygen carbon dioxide and water carbon and hydrogen carbon dioxide and hydrogen

What is the equivalent resistance for a parallel circuit that has two resistors: 18.0 ohms and 23.5 ohms?

Electrodes used in arc welding processes are classified as consumable or non - consumable. Filler metal is always added when consumable electrodes are used and never added when non-consumable electrodes are used: a) True b) False

Why should a truck have an engine that can produce more force than a regular car? A. "Net forces" do not affect cars and trucks the same way. B. A truck needs to drive further than a car and needs more force to go further. C.

Edson exercises in sets that are each t minutes long. He does 6 sets of push-ups, 3 sets of pull-ups, and 4 sets of sit-ups. Use an expression to represent the time it takes Edson to exercise as the sum of three different terms.

A 1400kg car moving westward with a velocity of 15m/s collides with a utility pole and is brought to rest in 0.30sec. find the force exerted on the car during the collision.?

In an h-r diagram most stars are found in a diagonal band from the upper left to lower right which is called?

Suppose we have three hypothetical atomic nuclei: A, B, and C. Nucleus A has 7 protons and 7 neutrons. Nucleus B has 5 protons and 7 neutrons. Nucleus C has 7 protons and 5 neutrons. Which of the two nuclei are isotopes of the same element

What type of friction is using chalk in the summer to draw on the ground in Copley square? Sliding friction Rolling friction static friction Fluid friction

Two energy resources that do not depend on the sun's energy