An iron weight, suspended by a string, is motionless. The tension in the string is 4.75 newtons. What is the mass of the iron weight? A. 0.485 kilograms B. 4.75 kilograms C. 9.65 kilograms D. 10.0 kilograms E. 15.5 kilograms

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j