ceres orbits the sun every 1680 days. calculate how many seconds it takes for ceres to complete one orbit.

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.