When using a lever, what is the input force called

Which statement about forces is true? A. Forces are defined by strength but not direction. B. Forces are defined by direction but not strength. C. Forces are defined by both strength and direction. D. Forces act only on objects that are in contact.

What is the definition of binary star system

Is water actually wet?

A girl pushes a cart with a force of 10 N. if the cart has a mass of 5 kg, what is its acceleration?

Two large crates, with masses 640kg and 490kg, are connected by a stiff, massless spring (K=8.1kN/m) and propelled along an essentially frictionless, level factory floor by a force applied horizontally to the more massive crate.

Both artists and scientists contribute to our understanding of the world around us. Identify the ways that art and science are similar. Check all that apply.

An automobile accelerates from rest at 1 + 3 * sqrt (t) mph/sec for 9 seconds. how far does it travel in those 9 sec?

A glass lens, n glass = 1.52, has a 131 nm thick antireflective film coating one side, n film = 1.25. White light, moving through the air, is perpendicularly incident on the coated side of the lens.

An automobile steering wheel is shown. The ideal mechanical advantage of this wheel and axle is. If a driver must exert a force of 2 N to overcome an axle resistance of 16 N, the AMA of the steering wheel is and its efficiency is__ %.?

How does the law of conservation of energy apply to machines? -Machines create energy from scratch. -Machines consume energy until no energy remains. -Energy transferred to a machine equals energy transferred from it.