A ship that weighs 10,000 tons (mass 10 million kg) must displace what volume of fresh water in order to float?
A) 104 m3
B) 107 m3
C) 108 m3
D) 1010 m3
E) 1012 m3
A
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Determine the thermal resistance per unit length of the tubing (nylon) shown in Figure 2-52. Then predict the heat transfer through the tubing if the inside ambient temperature is -10ºC and the outside is 20ºC.
A machinist turns the power on to a grinding wheel, which is at rest at time t = 0.00 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of
The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to: A) 17 s B) 15 s C) 19 s D) 21 s E) 23 s
What problem does adaptive optics correct?
A) Defects in the optics of the telescope, such as the original Hubble mirror B) The opacity of the Earth's atmosphere to some wavelengths of light C) The light pollution of urban areas D) Turbulence in the Earth's atmosphere which creates twinkling E) Chromatic aberration due to use of only a single lens objective
Our theories of galaxy formation are just as well developed and tested as are our theories of star and planet formation
Indicate whether the statement is true or false