A 0.1 kg mouse is running along a countertop. The mouse has 1 J of gravitational potential energy. A 5 kg cat is sitting on top of a cabinet, stalking the mouse. The cat has 100 J of gravitational potential energy. A 10 kg dog is on the floor, barking at the cat. The dog has 0 J of gravitational potential energy. The acceleration due to gravity (g) is 10 m/s2. Order (or list) the animals (mouse, cat, and dog) according to their height, starting with the animal that has the most height and ending with the animal that has the least height. Be sure to use evidence from the first paragraph and reasoning to justify your answer/claim.

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?