Carlos has eight marbles that are all the same size. he knows that one marble has a mass of 10 grams. to find out the total mass of all his marbles together, he adds 8 tens and gets a total of 80 grams. why does this method of finding the total mass work.

After a car's engine has been running for a while, if you stand near the car's engine you can often feel heat coming from the engine as a result of a. radiation b. convection c. conduction

How have the competing explanations' experiments on atoms affected the development of the atomic model?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s