Ptolemy's model was ________, with the Earth fixed in the center of the universe
Fill in the blank(s) with correct word
geocentric
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Pressure in a Liquid: What force does the water exert (in addition to that due to atmospheric pressure) on a submarine window of radius 44.0 cm at a depth of 9400 m in sea water? The density of sea water is 1025 kg/m3.
A.
| 5.74 × 107 N |
B. 5.74 × 1011 N
C. 2.87 × 1011 N
D. 1.83 × 107 N
E. 2.87 × 107 N
You swing a bat and hit a heavy box with a force of 1500 N. The force the box exerts on the bat is
A) exactly 1500 N only if the box does not move. B) exactly 1500 N whether or not the box moves. C) greater than 1500 N if the box moves. D) less than 1500 N if the box moves. E) greater than 1500 N if the bat bounces back.
A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = 2.5 N/C, Ey = Ez = 0. If the velocity of the particle at t = 0 is given by vy = 50 m/s, vx = vz = 0, what is the speed of the particle at t = 2.0 s?
A. 81 m/s B. 72 m/s C. 64 m/s D. 89 m/s E. 25 m/s
If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of the water from 15°C to 25°C?
The specific heat of water is 4190 J/kg•K. A) 93 s B) 5.3 s C) 22 s D) 114 h