Does a star's apparent brightness depend only on its distance from earth?

Which has greater linear speed, for horses on a merry go round? inner horse outside horse neither?

A student is asked to design a cart that will have the smallest force of impact when it collides with another object. Which of these would be the best design

What is the number of neutrons in an element with a mass number of 117 and a proton number of 67? -67 -117 -50 -0

What type of factrors affect weather the rock is a fold or fault

When water (H2O) freezes into ice, some of the properties have changed but the of the H2O is the same.

A pair of power transmission lines each have 2.35-Ω resistance and carry 650 Amp. If the primary voltage of the 10:1 step-up transformer is 3.0 kV, calculate the input voltage of the step-down transformer at the other end.

1.0 x 10^4 kg spacecraft is traveling through space with a speed of 1200 m/s relative to Earth. A thruster fires for 2.0 mins, excerting a continious force of 25kN on the spacecraft in a direction opposite the spacecraft's motion.

a brass rod is. 500 m long at 20.0celsius. what is the length of the rod if it is heated to 50.0 celsius

A 900 kg car initially going 15 m/s only in the x-direction runs into a stationary 1500 kg truck. After the collision the car is going 5.0 m/s at an angle of 40 degrees above the x - axis.

A flattened combination of matter containing stars, gas, and dust in a spiral galaxy can be identified as: a. A galaxy b. A disk c. An elliptical galaxy d. Gravitation lensing