1. a pendulum bob (the mass) is made from a sphere (ball) filled with water. what would happen to the frequency of vibration of this pendulum if there were a hole in the sphere that allowed the water to leak out slowly? [2.5 points]

What is the temperature in degrees celsius of a substance with a tempature of 49k

Which component of the earth’s atmosphere is decreased due to photosynthesis?

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton