A quarter-pound hamburger with all the fixings has a mass 180 g. The food energy of the hamburger is 1.90 MJ. What is the energy equivalent of the mass of the hamburger? By what factor does the energy equivalent exceed the food energy?

Suppose that you have found a way to convert the rest energy of any type of matter directly to usable energy with an efficiency of 61.0%. How many liters of water would be sufficient fuel to very slowly push the Moon 1.70 mm away from the Earth? The density of water is ?water=1.00kg/liter, the Earth's mass is ?earth=5.97×1024 kg, the Moon's mass is ?moon=7.36×1022 kg, and the separation of the Earth and Moon is ?E,M=3.84×108 m.

Find the rest energy, in terajoules, of a 19.9 g piece of chocolate. 1 TJ is equal to 10'2 J. rest energy: TJ

4. Consider following the following the fusion nuclear reaction: n+p+p→;He. What happens to the different types of potential energies of this system as a result the reaction (i.e. the electrical potential energy and the strong nuclear potential energy)? The atomic mass of He is 3.016029 u. a. The electrical potential energy and the strong nuclear potential energy both increase. b. The electrical potential energy increases and the strong nuclear potential energy decreases. c. The electrical potential energy increases and the strong nuclear potential energy remains the same. d. The electrical potential energy decreases and the strong nuclear potential energy increases. e. The electrical potential energy and the strong nuclear potential energy both decrease.

Alan Lightman estimated that the energy (all forms, not just electrical) needed for a large American city for one day is roughly the same as could be provided by converting 100% of the mass of a golf ball into energy. Check to see whether this estimate is valid within an order of magnitude.

answer a no handwritten

A spaceship of mass 2.00 x 106 kg is to be accelerated to a speed of 0.730c. (a) What minimum amount of energy does this acceleration require from the spaceship's fuel, assuming perfect efficiency? 19.23e22 X Your response differs from the correct answer by more than 100%. J (b) How much fuel would it take to provide this much energy if all the rest energy of the fuel could be transformed to kinetic energy of the spaceship? 2.136e6 X Your response differs from the correct answer by more than 100%. kg