A window washer stands on a scaffolding 30m above the ground. If he did 23,520J of work to reach the scaffolding, what is his mass?

The moon most likely formed A. From a collision of Earth with a Mars-sized object. B. In another region of space and drifted toward Earth. C. From material in the solar system that came together. D. In the same way as Earth formed.

Define reflection and give to examples define refraction and give two examples

A scientist discovers a new planet. She notices that the planet has alternating bands in the atmosphere that all flow in the same direction. What can she assume about the planet?

A magnesium (Mg) atom has 2 valence electrons. Which of the following would be the most likely way for a magnesium atom to become stable? O A. Lose 2 electrons O B. Lose 1 electron O C. Gain 6 electrons O D. Gain 1 electron

A car accelerates uniformly from rest and reaches a speed of 21.5 m/s in 11.4 s. The diameter of a tire is 66.5 cm. Find the number of revolutions the tire makes during this motion, assuming no slipping. Answer in units of rev.

Laser light of wavelength 470 nm shines on a pair of slits at normal incidence, producing a pattern of maxima on a large screen 92.0 cm away from the slits. The second order maximum is observed to be 31.7 cm away from the central maximum. a.

What does the slope of a line of best fit represent

A bowling ball is pushed with a force of 22.0N and accerlates at 5.5 m/s square. What is the mass of the bowling ball A - 4.0 kg B-0.25 kg C-25 kg D-4.00 kg

How to eat butter. I want to know how you all eat the butter.

What is the transfer of heat through a solid as a result of molecular action called? radiation convection conduction magnetism?