What do scientist use to determine the temperature of a star

If a force of 50 n stretches a spring 0.10 m, what is the spring constant?

Like his parents, Thomas is short, stocky, and heavyset. Although he exercises regularly and eats a well-balanced meal, his body composition stays the same. Explain what factor is most likely affecting his body composition ...

two test cars of equal mass moving towards each other collide on a horiontal frictionless surface. Before the collision, car A has a constant speed 20m/s while car B has a constant speed of 12m/s.

A 100-g toy car moves along a curved frictionless track. At first, the car runs along a flat horizontal segment with an initial velocity of 2.66 m/s. The car then runs up the frictionless slope, gaining 0.

The charge on a parallel plate capacitor is 7.68 C, and the plate is connected to a 9.0 V battery. What is the capacitance of the capacitor? A. 8.5x10^-7 pF B. 1.1x10^-6 pF C. 8.5x10^5 pF D. 6.9x10^7 pF

In what state do hydrogen and helium exist in a star

13) The frequency of a vibrating string varies inversely as its length. A string 3 feet long vibrates 175 cycles per second. Find the frequency of a 5 foot string.

Match the following. 1. energy a push or a pull 2. mechanical energy energy of a moving object 3. kinetic energy a force directed away from an object 4. heat the ability to do work 5. work a force moving an object through a distance 6.

Scientists hypothesize that oxygen began to accumulate in earth's atmosphere of living things with the ability to?

The 3 stages of the water cycle are