What is the energy source that heats a contracting protostar?

Chef tom works in a very busy restaurant. he cooks for 100's of people each night. why chef tom would use a copper pot instead of an aluminum pot?

If a boat and its riders have a mass of 1200 kg and the boat drifts in at 1.5 m/s how much work does sam do to stop it?

Convert the filling metric measurements 59.97 Kg to g

N a presentation about measuring mass, one of your classmates states, "Two objects of the same size will always have the same mass." Is this statement correct? Why or why not?

A 0.26-kgkg rock is thrown vertically upward from the top of a cliff that is 32 mm high. When it hits the ground at the base of the cliff, the rock has a speed of 33 m/sm/s. a.

A starship passes Earth at 80% of the speed of light and sends a drone ship forward at half the speed of light rela - tive to itself. Show that the drone travels at 93% of the speed of light relative to Earth.

Rubies are used in electronics

Two kids are on a merry-go-round that is turning at a constant rate. ariel is near the outer edge, and bob is closer to the center. ariel has answer (smaller, the same, or greater angular speed?

Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.

Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?