Why do scientists look for asteroids that might strike our planet?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

What is the increase in density of a medium due to wave travel?