Calculate final temperature of 50 g of water heated with 20000 J. The heat capacity of water is 4190 J / kg / ºC.

1 Physics question 4 Brainliest! Which of the following is a charged object? A.) thunderclouds B.) water C.) steel D.) glass

The speed of light is now to be defined 2.99792458x10^8 m/s express the speed of light to three significant figures five significant figures seven significant figures

A motorcycle is speeding along at a velocity of120kph. Then, it changes to a velocity of 150 kph for 2 minutes. What is the motorcycle's averange acceleration?

A man pushes on a piano with mass 180 kg; it slides at constant velocity down a ramp that is inclined at 19.0° above the horizontal floor. Neglect any friction acting on the piano.

A 2kg book is moved from a shelf that is 2m off the ground to a shelf that is 1.5m off the ground, what is it's change in gravitational potential energy

A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 * 10³ kilograms. What is the amount of mechanical work done by the vehicle?

All forces are different each exerts a particular type of effect on an object

Witch statement about polymers is true

Two bullets have masses of 3,0 g and 6.0g, respectively. both are fired with a speed of 40.0 m/s. Which bullet has more kinetic energy? What is the ratio of their kinetic energies

What does it mean that a form of energy might take more energy to harness than it provides? Are renewable resources always renewable, or can they become non-renewable? Why aren't renewable resources used for everything that we use energy for?