What happens to an object's velocity if there is work done by a friction force? Why?

Whats the answers to the compound mystery

Which of these is considered a satellite galaxy of the Milky Way Galaxy? a. Virgo b. Andromeda c. Small Magellanic Cloud d. Copernican Dwarf Elliptical

Grains of fine california beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.6 * 103 kg/m3.

A hockey puck is hit by a hockey player at the goalie. The puck is hit with a 1200 newton force. The stick made contact for 0.1 seconds. What impulse was given to the puck?

The student finds that a standing wave with one antinode is formed on the string when the frequency of the oscillator is f0. The student then moves the oscillator to shorten the horizontal segment of string to a fourth of its original length.

Which of the following can be determined by studying the spectrum of a star? the chemicals in the atmosphere of the star the motion of the star the temperature of the atmosphere of the star all of the above

How do I find the specific heat of an object?

In order to be considered scientific, evidence must be:

An unknown material has a mass of 5.61 kg, and its temperature increases by 0.124°C when 1320 J of heat are added. What is the specific heat of the material? (Unit = J / (kg*C))

What is the speed of a 1.0 * 103-kilogram car that has a momentum of 2.0 * 104 kilogram∙meters per second east?