Energy and Momentum: An object initially at rest suddenly explodes in two fragments of masses 2.6 kg and 3.3 kg that move in opposite directions. If the speed of the first fragment is 3.6 m/s, find the internal energy of the explosion.

A. 30 J
B. 30 kJ
C. 38 J
D. 38 kJ


Answer: A

Physics & Space Science

You might also like to view...

If m = 4, how may possible values can the spin quantum number ms have?

A) 3 B) 5 C) 4 D) 2 E) 1 F) 0

Physics & Space Science

Satellite Motion: A satellite of mass 500 kg orbits the earth with a period of 6000 s. The earth has a mass of 5.97 × 1024 kg, a radius of 6.38 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2.(a) Calculate the magnitude of the earth's gravitational force on the satellite.(b) Determine the altitude of the satellite above the earth's surface.

What will be an ideal response?

Physics & Space Science

When a beam of light, which is traveling in glass, strikes an air boundary, there is

A) a 90° phase change in the reflected beam. B) no phase change in the reflected beam. C) a 180° phase change in the reflected beam. D) a 60° phase change in the reflected beam. E) a 45° phase change in the reflected beam.

Physics & Space Science

While running, a person dissipates about 0.6 J of mechanical energy per step per kilogram of body mass. If a 60-kg person runs with a power of 70 watts during a race, how fast is the person running? Assume a running step is 1.5 m long.

What will be an ideal response?

Physics & Space Science