2) A big, old cat with a mass of 8 kilograms sits in a tree on a branch 10 meters high waiting to jump on pigeons.
a) What is the cat's weight? (remember we are on earth where a = 9.8 m/s/s)
Formula
Work with Units
Answer with Units
b) How much gravitational potential energy does he have?
Formula
Work with Units
Answer with Units

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

What is the celsius value for 65 farenhiet