You have 1 kg of liquid water and 1 kg of steam. If you add 100 J of energy to each, which would experience the greatest increase in temperature?
1.the water
2.the steam
3.They will both experience the same increase in temperature.
4.It cannot be determined because it depends on the actual temperature of the water and steam as well as the pressure.
2
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Escape Speed: How do the escape speeds for two rockets, the first weighing 20 N and the second weighing 20,000 N compare?
A. The escape speed for the lighter rocket is smaller than that for the heavier rocket. B. The escape speed for the lighter rocket is the same as that for the heavier rocket. C. The escape speed for the lighter rocket is greater than that for the heavier rocket.
Telescopes operating at this wavelength must be cooled to observe faint astronomical objects
A) radio B) extreme infrared C) visible D) X-ray E) gamma-ray
A child riding on a swing, Andrea, rises to a height 1.0 m above the lowest point. Another child of equal mass, Brian, has a speed at his lowest point that is twice as great as Andrea's speed at her lowest point. Brian will rise
A. twice as high. B. four times as high. C. to the same height. D. to a height which depends on the mass.
A flatbed truck is carrying a 20.0-kg crate along a level road. The coefficient of static friction between the crate and the bed is 0.400, and the coefficient of kinetic friction is 0.300
What is the maximum acceleration that the truck can have if the crate is to stay in place relative to the truck? A) 8.00 m/s2 B) 3.92 m/s2 C) 196 m/s2 D) 78.5 m/s2 E) 7.84 m/s2