A girl of mass 30 kg on a roundabout of radius that makes one complete turn every 5 sec. What is the centripetal force acting on her?

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

Acar of mass 800kg is moving at a speed of 2.2m/s.