two objects each weighing 2kg are lifted through the same distance in 4s and 1s respectively. which scenario requires more work?

give one reason why the energy carries bu sound waves decreases as those sound waves travel through air

Which of the following statements is true about the scientific process? The hypothesis is always supported in the end / You can change the hypothesis if the experiment is not supporting it / Your hypothesis must be testable / You can change the data

2) The position of a particle is given r (t) = A (cos wt i + sin wt f), where w is a constant. (a) Show that the particle moves in a circle of radius A. (b) Calculate and then show that the speed of the particle is a constant.

What happens when two minerals have different arrangements of Atoms

If you are in a spaceship that is sitting on the surface of a planet, you feel your weight. How does this compare to the weight you feel in an accelerating spacecraft?

A thin cylindrical shell and a solid cylinder have the same mass and radius. The two are released side by side and roll down, without slipping, from the top of an inclined plane that is 1.8 m above the ground.

The water in a lake is at 5 °C. A diver measures the pressure of the water at two different depths in the lake. He repeats the measurements on a different day when the water is at 15°C.

A hot spot is an area where material from deep within the mantle rises and melts through the crust above it. True or False

Which suspect is one who wrote the suicide note? Question 1 options: George Roberts Karen Roberts Mary Roberts John Huddleston

What happens when an atom is exposed to an energy source such as electricity? The electrons may jump to a higher energy level. The electrons move closer to the nucleus. The electrons may move to a lower energy level.