questions using multipal choic answers on mechanics
a steel block has a volume of 0.08m3 and a density of 7,840 kg/m3, what is the force fo gravity acting on the block (the weight) in water? A.5362.56N b.6150.64N c.6700.56N or d.7600.18N ?
How to change to SI units. - The density of a substance is 2.94g/cm. In SI units, what is its (a) specific gravity (b) specific volume, and (c) specific weight?
Dimensional Analysis and Dynamic Similtude - Determine the specific gravity of spherical particles, D=(1/200 in), which drop through air at 33degrees F at a speed U of 0.3 ft/s. The drag force on a small sphere in laminar motion is given by 3(p ...
multipal choice question on mechanics - a machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. what is the efficiency of the machine? a. 92 percent b. 94 percent c. 96 percent d. 97 percent?
multipal choice question on mechanics - a car with a mass of 2,000. kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. the curve has a radius of 80 meters. what is the centripetal force on the car? a. ...
Finding center of gravity using double intergral - This question is #14, section 9.3 in kreyszig's book advanced engineering mathmatics. The question is as follows:
Find the coordinates x*,y* of the center of gravity of a mass of density f(x,y)=1 ...