Sheila did 110 J of work to move a chair 2 m to the right. How much force did Sheila use to Sheila use to move the chair
Which of the following is powered by nuclear energy? A) aircraft B) automobiles C) trains D) submarines
If an object absorbs light energy, its thermal energy __________. A) stays the same B) is transformed into kinetic energy C) decreases D) increases
People in the United States know that water boils at 212°F. In Europe, people know that water boils at 100°C. Is the water in the U.S. different than the water in Europe? What explains the two different temperatures?
A sleigh weighing 2000 newtons is pulled my a horse a distance of 1.0 kilometer (or 1000 meters) in 45 minutes. what is the power if the horse?
A stone is thrown straight downward with a speed of 20 m/s from the top of a tall building. If the stone strikes the ground 3.0 seconds later, about how tall is the building? A) 45m B) 60m (wrong) C) 90m D) 105 m
The sled dog in the figure below drags sled A and B across the snow. The coefficient of friction between the sleds and the snow is .11. If the tension in rope 1 is 190 N, what's the tension in rope 2?
a diver initially moving horizontally with speed v dives off the cliff and lands in the water a distance x feom the base. how far feom the base would the diver lmhave landed if the diver initially had been moving horizontally with the speed of 2v
