Water has a heat capacity of 4,184 J/kg*C. You have 2kg of water at a temperature of 98C. You want to raise the temperature to 100C. How much energy is needed to do this?

4,184J

16,736J

12,334J

9,445J

A car accelerates from a resting position at a constant 5 meters per second per second. What does the graph of acceleration versus time look like

What is the central equation of mass-energy equivalence?

In a region where there is a uniform electric field that is upward and has magnitude 3.80x104 N/C a small object is projected upward with an initial speed of 2.32 m/s The object travels upward a distance of 5.98 cm in 0 200 s.

An arrow is shot upward from the roof of a building 75 m high with an initial speed of 40 m/s. If g = 10 m/s2, what total distance has it traveled after 6 seconds?

A sound source is located somewhere along the x-axis. Experiments show that the same wave front simultaneously reaches listeners at x = - 7.0 m and x = + 3.0 m.

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells

Basic of Archimedes's principle of how fluid can make body to float and sink.

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 625 m/s in a time of 1.10 ms (milliseconds)