heat

When heat is added to boiling water, its temperature? And Why!

Temperature/heat

Place a kilogram block of iron at 40 degrees C into a kilogram of water at 20 degrees C what will the final temperature of the two become, and why?

Relative Physics

If U235 captues a neutron to form U236 in its ground state, the energy released is B(U236) - B(U235). (a) Prove this statement. (b) Use the binding-energy formula to estimate the energy released, and compare with the observed calue of 6.5 MeV. (Note: We have assumed here that U236 is formed in its ground state, and the 6.5 MeV is carried away, by a photon, for example. An important alternatice is that U236 can be formed in an excited state, 6.5 MeV above the ground state. This excitation energy can lead to oscillations that cause the nucleus to fission.)

Linear Momentum (Changing Mass)

Please show all work with answer!!! A rocket with initial mass of 8.0 x 10^3 kg is fired vertically. Its exhaust gases have a relative velocity of 2.5 x 10^3 m/s and are ejected at a rate of 40 kg/s. A. What is the initial accerleration of the rocket? B. What is the acceleration after 20 s have elapsed. I paid for these incorrect answers. Please don't sign the problem out unless you know how to solve it. THANKS A: to overcome the gravity, the rocket must have a initial accerleration of 9.8m/s^2 B:In this question, the initial velocity of rocket is zero. V0=0. after 20s, the acceleration will not change. it is still 9.8m/s^2 A) Fr=2.5 x 10^3x40=10^5N F... click for more

Elastic Collision in One Dimension

PLEASE SHOW ALL WORK WITH CORRECT ANSWER!!!!! 8.10 Two air-track gliders of equal mass are initially moving in the same direction alone a straight line. The rearmost glider has an initial speed of 3.0 m/s and the forward glider has a speed of 2.0 m/s. if the collision is elastic, what are the speeds and directions of the gliders after the collision?