It takes 3 minutes to make toast in a 1500 watt toaster. calculate how much work is done by the toaster.

a)
8.3 j

b)
60 j

c)
90,000 j

d)
270,000 j

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?