A gold brick measuring 0.25 ft by 0.33 ft by 1 ft is submerged in water. The weight density of gold is 1,200 pounds per cubic foot and the weight density of water is 62.4 pounds per cubic foot. (a) What is the weight of the gold brick? (b) What is the buoyant force on the gold brick? (c) What is the net force on the gold brick?
(a) 99 lb, (b) 5 lb, (c) 94 lb
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Air at 0ºC blows across a 3 cm diamter power cable at 20 m/s. If the outside surface of the cable is 50ºC, estimate (a) the heat transfer per unit length and (b) the Drag force in Newtons per meter length of cable.
What will be an ideal response?
What is the phase of the Moon shown in the above image?
a. waxing gibbous b. third quarter c. waning gibbous d. first quarter
Mn is a transition element and can form several ions. Its ionic charge in MnF3 must be ______________
Fill in the blank(s) with correct word
The uncertainty principle tells us that the more information one has about the energy of an electron, the less certain one is about
A) its position. B) the time it has that energy. C) both of these D) neither of these