German philosopher and physicist Gustav Theodor Fechner founded psychophysics.

True or False

Question 1 Unsaved Most of the mass of the solar system is located in which of the following? Question 1 options: Earth comets sun Jupiter

Galileo saw that much of the moons surface in covered with round pits called

A 10.0 g bullet moving at 300m/s is fired into a 1.00 kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its orginal speed. What is the velocity of the block right after the collision?

What does the atomic number respresent? (From my science homework)

Wind energy spins the blades on this wind turbine. The mechanical energy of the moving blades is used to generate electricity. But wind turbines are not suited to all areas of the country, because in some places there's is not enough wind.

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N