You observe a distant galaxy. you find that a spectral line normally found in the visible part of the spectrum is shifted toward the infrared. what do you conclude?

A monatomic ideal gas expands slowly to twice its orig - inal volume, doing 450 J of work in the process. Find the heat added to the gas and the change in internal energy of the gas if the process is (a) isothermal; (b) adiabatic; (c) isobaric.

Large amounts of water that quickly infiltrate soil on a sloped surface can A. slow down the effects of mass movement by making the soil thicker and more resistant to flow B. hold soil particles together and reduce the stress on the soil C.

A roller coaster car moves in a vertical circle of radius R. At the top of the circle the car has speed v1, and at the bottom of the circle it has speed v2, where v2>v1. Suppose that v2 is in the x-direction, and y-axis is directed upward.

Mass = 567.5 g Volume = 50.0 cm3 What is the density of lead? 1.135 g/cm3 11.35 g/cm3 113.5 g/cm3 1,135 g/cm3

What is the correct measure of an astronomical unit?

According to the Theory of Continental Drift, what did the Earth's continents look like 255 million years ago?

What is the emf of a battery that increases the electric potential energy of 0.060 CC of charge by 0.70 JJ as it moves it from the negative to the positive terminal?

Why is gravitational potential energy negative?

What will happen to this current if a magnet is brought near the cord?

The kinetic energy of a sliding block came from the: kinetic energy of the string. kinetic energy of the board. gravitational potential energy of the block. gravitational potential energy of the mass on the hook.