A rake is held so that its input arm is 0.4 meters and its output arm is 1.0 meters. What is the mechanical

advantage of the rake?

A leaf floating down from a tree is an example of an object in free fall. A. True B. False

In a polar covalent bond

26. The equation E=hf describes the energy of each photon in a beam of light. If Planck's constant, h, were larger, would photons of light of the same frequency be more energetic or less energetic.

Match the wave motion with the correct seismic wave. P wave S wave Surface wave A. motion that involves compression and expansion of the material through which it passes; may pass through solids, liquids, and gases B.

When observing a specimen in a microscope you are told that the total magnification of the specimen is 630x assuming you are using a standard occular lens with a magnification of 10x what is the magnification of the objective lens?

An arrow is shot upward on mars from ground level with a velocity of 60 meters per second. Its height (in meters) after t seconds is given by 2 s (t) = 60t - 1.9t^2.

What are (a) the lowest frequency, (b) the second lowest frequency, (c) the third lowest frequency of transverse vibrations on a wire that is 10.0m long, has a mass of 100g, and is stretched under tension of 250 N?

Why is a rock salt crystal likely to shatter when struck

Find the speed required to throw a ball straight up and have it return 6 seconds later. neglect air resistance. how high does the ball go?

Do all electromagnetic waves travel at the speed of light, carry energy, and travel through a vacuum?