1. Which of the substances listed in the table above would heat up fastest if an equal amount of heat energy were applied to all of the substances at the same time? Explain your answer.

2. Which of the substances listed in the table above would you choose as the best insulator
(substance that requires a lot of heat energy to experience a change in temperature)? Explain your
answer.

3. You work for a design company and have been given the task of designing a pot to boil water
quickly. Which of the materials in the table above would you select for your design and why?

When an object is heated it contracts. a. true b. false

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?