What is the tangential velocity of a 15 kg mass tied to a string and moving in a circle of radious 10 m, if the period of the orbit is 0.2 seconds?

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?

Heterogeneous mixture with larger particles that never settle is

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation