The energy released by a certain reaction is enough to totally evaporate 125 kg of water at its boiling point. How much mass was lost during this reaction? (LF = 334,000 J/kg for water, c = 3.00 × 108 m/s)
What will be an ideal response?
4.64 × 10-10 kg
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Constant Acceleration Kinematics: If a car accelerates at a uniform 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, starting from rest?
Fill in the blank(s) with the appropriate word(s).
Suppose at the surface of the Earth a person can do 20 pushups. In a spaceship far away from any gravitational influence, accelerating at g, the same person could do
A) less than 20 pushups. B) 20 pushups. C) more than 20 pushups.
List the three types of website structures, and give an example of how each might be used.
What will be an ideal response?
A ZAMS star evolves __________ and to the __________ on the H-R diagram because ________________
a. downward, left, the core expands which causes the outer layers to expand b. upward, right, the core contracts which causes the outer layers to expand c. upward, left, the core expands which causes the outer layers to contract d. downward, right, the core contracts which causes the outer layers to contract