A child's toy rake is held so that its output arm is 0.75 meters. If the mechanical advantage is 0.33, what is

the input arm length?

Which fault will see the hanging wall move down relative to the footwall?

On what principle does a solar fan work?

A pet hamster runs across the floor at 5.6 m/s for 3.9 s toward the door. How far does he get?

A 70.0 kg ice hockey goalie, originally at rest, has a 0.170 kg hockey puck slapped at him at a velocity of 33.5 m / s. Suppose the goalie and the puck have an elastic collision, and the puck is reflected back in the direction from which it came.

A loudspeaker diaphragm is vibrating in simple harmonic motion with a frequency of 760 Hz and a maximum displacement of 0.85 mm. (a) What is the angular frequency? (b) What is the maximum speed? (c) What is the maximum acceleration?

Which of the following is an example of heat transfer through radiation? A. A pot of soup warming on a hot burner. B. A crayon melting on a hot sidewalk. C. Beach sand getting warmed by the sun. D. An egg getting cooked in a pot of boiling water.

Which of the following best describes each particle? A. Protons are negative, neutrons are neutral, and electrons are positive. B. Protons are neutral, neutrons are positive, and electrons are negative. C.

During World War II, both the Allied and Axis powers used propaganda to A. weaken public support for the war. B. downplay public opinion. C. manipulate the public through the use of humor. D. shape public support of the war

What type of simple machine is a hand drill? A) pulley B) wedge C) ramp D) screw

Calculate the wavelength and frequency of the radiation emitted by the electronic transition from the 10th to the 9th excited state of hydrogen.