Please help I really need this and please try to explain A 0.200 kg mass of lead is heated to 200°C. It is then placed in a 0.500 kg iron calorimeter containing 0.150 kg of water with an initial temperature of 30.0°C.
When the combination of the lead, the calorimeter, and the water reaches equilibrium, what is the final temperature?

The mini-refrigerator fire was most likely caused by what type of wiring?

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)