When heated, most matter:

expands

contracts

remains the same

Two identical parallel-wired strings of bulbs are connected to each other in series. if the equivalent resistance of the combination is 130 ohms when it is connected across a potential difference of 120 volts, what is the resistance of each

Scientists can calculate the distance from the seismograph station to the focus using a. the difference in arrival times of P and surface waves. b. the difference in arrival times of P and S waves. c.

A horizontal force of 30 n pulls a block of mass 2.5 kg across a level floor. the coefficient of kinetic friction between the block and the floor is μk = 0.25. if the block begins with a speed of 7.

Which type of indirect evidence can substitute for direct measurements of past climate change?

In a clear, coherent, paragraph-length answer, explain why the speed of the apple half way between the release and the maximum height is not half the initial speed.

To study the properties of various particles, you can accelerate the particles with electric flelds. A positron is a particle with the same mass as an electron but the opposite charge (+e). Express your answer in vector form.

A lawnmower engine running for 20 minutes does 4560000 j of work. What is the power output of the engine

Which of the following is a conductor for electricity? Question options: wood wool water rubber tire

The area where the magnetic force is exerted is known as which of the following? A. pole B. domain C. field D. area

How does no light affect the plants?