A pair of scissors is a first class lever. The fulcrum is between the handle and the blades. The blades contain two simple machines back to back: they are

A) gears.

B) levers.

C) inclined planes.

D) wheel and axles.

Select the correct answer. In a given chemical reaction, the energy of the products is greater than the energy of the reactants. Which statement is true for this reaction? A Energy is absorbed in the reaction. B. Energy is released in the reaction.

Which requires more work, carrying a 420 N knapsack up a 200 m hill or carrying a 210 knapsack up a 400 m hill? Why?

What is the best definition Copernicus

Acceleration of 10 kg object if a force of 3n is acting on it

a mars prototype carrying scientific instruments has a mass of 1060kg. a net force of 52000 n is applied to this roverat a test site on earth. what is the acceleration of the rover? solve the acceleration. force / mass a = F/m

How much work is done when a 4.0-newton box is carried horizontally a distance of 2.0 meters at a constant velocity?

You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If the force you apply has a magnitude of 86 N, what is the cart's acceleration? Assume negligible friction.

Does water expand more as the temperature drops even more below 0 deg? I am worried about the coolant in my rad. as the temp. is 40deg below.

A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per second.

Why oil does not dissolve in water?