the same force is applied to two skateboards. one rolls across the room and the other moves a few feet and comes to a stop. where was there more work done

Convert 345 cm inches

In the pulley system shown below, a 360 N weight is slowly lifted. Assuming the system is 100% efficient and each pulley is weightless, what is the minimum input force needed to lift the weight? Rope Pile L = 16.74m A. 61 N B. 121 N C. 181 N D.

The shortest wavelengths occur in the:red end of the spectrumblue end of the spectrummiddle of the spectrum The light-gathering capacity of a telescope is dependent upon the:magnificationfocal lengthsize of human irisarea of aperture

Which of the following best explains why the tidal bulges on Earth are larger closest to the Moon compared to the tidal bulges closest to the Sun?

The position of an object as a function of time is given by [x (t) = at^3 - bt^2 + ct - d] where (a = 3.6, b = 4.0, c = 60 m, and d = 7.0). (a) Find the instantaneous acceleration at t = 2.4 s. (b) Find the average acceleration over the first 2.4

The waves shown below represent sound waves. Which of the waves would have the highest-pitched sound?

In most materials, as heat energy is absorbed, density

What types of energy transformations take place in a windmill

A shot is fired at an angle of 30 degrees with the horizontal from the top of a tower 182.88m. The velocity of projection is 60.90m/s. Find where from the foot of the tower it strikes the ground?

Evolutionary psychology is a relatively new approach to psychology that has been especially influenced by