Afriend asks you how much pressure is in your car tires. you know that the tire manufacturer recommends 30 psi, but it’s been a while since you’ve checked. you can’t find a tire gauge in the car, but you do find the owner’s manual and a ruler. fortunately, you’ve just finished taking physics, so you tell your friend, “i don’t know, but i can figure it out.” from the owner’s manual you find that the car’s mass is 1500 kg. it seems reasonable to assume that each tire supports one-fourth of the weight. with the ruler you find that the tires are 15 cm wide and the flattened segment of the tire in contact with the road is 13 cm long. what answer will you give your friend?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Aball is thrown upward. at a height of 10 meters above the ground, the ball has a potential energy of 50 joules (with the potential energy equal to zero at ground level) and is moving upward with a kinetic energy of 50 joules. what is the maximum height h reached by the ball? consider air friction to be negligible. 1. h ≈ 10 m 2. h ≈ 50 m 3. h ≈ 30 m 4. h ≈ 40 m 5. h ≈ 20 m 003 10.0 points which of the two object shown below has the greatest kinetic energy? a m b 1 2 m v 2v 1. kinetic energies are the same. 2. a 3. b 4. unable to determine. 004 10.0 points tim, with mass 74.6 kg, climbs a gymnasium rope a distance of 3.1 m. the acceleration of gravity is 9.8 m/s 2 . how much potential energy does tim gain? answer in units of j. 005 10.0 points a car is moving at 64 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when it moves at 111 miles per hour? answer in units of j. 006 10.0 points an 102 kg man climbs up a 1 m high flight of stairs. the acceleration of gravity is 9.81 m/s 2 . w