Which of the following supplies the heat for the hot reservoir in a car's engine?

mixing gasoline with air

cooling the exhaust gases

igniting the gas-air mixture

venting the exhaust gases

A 1.9 g spider is dangling at the end of a silk thread. you can make the spider bounce up and down on the thread by tapping lightly on his feet with a pencil.

john pushes forward on a car with a force of 125n while bob pushes backwards on the car with a force of 225n

When two or more waves are at the same place at the same time, which phenomena occurs

What are three ways to speed up a reaction?

Three kids are riding on a snow sled traveling horizontally without friction at 19.8 m/s. The masses of Kid A, B, and C are 42.8 kg, 31.5 kg, and 25.9 kg, respectively.

How was the gravitational constant G first determined

There is an explosion on the surface of a lake and two people John and Nil hear its sound. John is 150m away on a boat and Nil is 150m below the surface of water. Who would hear the sound first and why?

It takes 3.3 j of work to stretch a hooke's-law spring 15 cm from its unstressed length. how much the extra work is required to stretch it an additional 11.3 cm? answer in units of j.

Reading Africa's Big Break 1. Which of the following best describes the purpose of the article? a. The passage is an advertisement to encourage you to buy something. b. The passage is to persuade you to make a certain decision. c.

What must quantities have before they can be added or subtracted?