A 3.00 g lead bullet is traveling at a speed of 300 m/s when it embeds in a wood post. If we assume that half of the resultant heat energy generated remains with the bullet, what is the increase in temperature of the embedded bullet? (specific heat of lead = 0.0305 kcal/kg• °C, 1 kcal = 4186 J)

a. 113°C
c. 176°C
b. 137°C
d. 259°C


C

Physics & Space Science

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The inversion of Marjorie's image in a plane mirror is actually an inversion of

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Two spaceships approach Earth from the same direction. One has a speed of 0.21c and the other a speed of 0.34c, both relative to Earth. What is the speed of one spaceship relative to the other?

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