Which statement best describes the work and energy in these examples? Example 1: Running a car requires gas.
Example 2: Humans require food to live.

The gas and food are examples of energy.
The gas and food are examples of work.
The gas and humans are examples of work.
The food and car are examples of energy.

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

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

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?