How does kinetic energy potential energy, and friction affect a skate track design?

During most nuclear reactions A. heat energy is produced but not light energy. B. energy is transferred out of the system. C. energy is lost as cold fusion. D. energy is created in the system.

A block of mass 1.3 kg is resting at the base of a frictionless ramp. A bullet of mass 50 g is traveling parallel to the ramp surface at 250 m/s. It collides with the block, enters it, and exits the other side at 100 m/s.

A series circuit consists of a 50-Hz ac source, a 40-Ω resistor, a 0.30-H inductor, and a 60-μF capacitor. The rms current in the circuit is measured to be 1.6 A. What is the power factor of the circuit?

Give an example of how you would see metamaterials in the present world?

The motion of a particle is defined by the equations x = (2t+t^2) and y = (t^2) where t is in seconds. determine the normal and tangential components of the particle's velocity and acceleration when t=2s.

A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a comet.

What is cosmic microwave background radiation?

Ocean water has a salinity of 35 parts per thousand. Fresh water has a salinity of less than 0.5 parts per thousand. What can you conclude from this information? A. Ocean water is rich in salt minerals. B.

You decide to add up all the work you did yesterday. If you accomplished 10,000 newton·meters of work yesterday, how much work did you do in units of joules?

What causes day and night on earth?