How could a rock be changed but still be classified as the same form of rock?

A 201 g lead ball at a temperature of 88.1°C is placed in a light calorimeter containing 178 g of water at 24.5°C. Find the equilibrium temperature of the system.

A beam of protons is accelerated through a potential difference of 0.725kV and then enters a uniform magnetic field traveling perpendicular to the field. A) What magnitude of field is needed to bend these protons in a circular arc of diameter 1.

In a circuit, where do electric charges go once they have left the voltage source and traveled along the wires?

At a college homecoming 20 students lifted a sports car. Each student exerted 450N of upward force on the car. a) What is the mass of the car in kg? b) What is its weight in lbs?

Which two kinds of energy are associated with flames?

What kind of movement does the heat within the core and mantle directly generate?

Explain why Newton's first law of motion can be difficult to observe in moving objects?

No force is necessary to

A boat has a mass of 4040 kg. Its engines generate a drive force of 4660 N due west, while the wind exerts a force of 880 N due east and the water exerts a resistive force of 1400 N due east. Take west to be the positive direction.

Define the word projectile