Afour-cylinder gasoline engine has an efficiency of 28 % and delivers 280 j of work per cycle per cylinder. a) if the engine runs at 25 cycles per second (1500 rpm), determine the work done per second. b)what is the total heat input per second from the gasoline. c) if the energy content of gasoline is 130 mj per gallon, how long does one gallon last?

An uplifted block of rock between two normal faults

What is the mass of the same rock on the earth

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue