A warrior swings a slingshot in a horizontal circle above his head at a constant speed. The sling is 1.5 m long, and the stone has a mass of 50 g. The tension in the string is 3.3 N. When he releases the sling, what will the stone's speed be?

What is the internal heat gain, in kW, from a factory with 20 kW of lighting (surface-mounted), 10 kW of running motors, and 10 people doing light benchwork?

Both local and global winds are caused by what?

What investigations allow for the control of variables

Based on Newtown law does gravity increase

Brownian motion cannot be detected in colloids. True or false?

If a basketball travles a distance of 4 meters in 5 seconds whst is the average speed

What is the formula for calculating mechanical power

The ability to do work is called what?

How can the speed of a mechanical wave energy be calculated

A hollow sphere of negligible mass and radius R is completely filled with a liquid so that its density is rho. You now enlarge the sphere so its radius is 2R and completely fill it with the same liquid. What is the density of the enlarged sphere?