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Q: 4. An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon? A. 1,176 N B. 196 N C. 20 N D. 12.24 N
A: C. 196 N
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User: 4. An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon? A. 1,176 N B. 196 N C. 20 N D. 12.24 N

Weegy: C. 196 N
stan_r|Points 1382|

User: 5. If the velocity of an object changes from 65 m/s to 98 m/s during a time interval of 12 s, what is the acceleration of the object? A. 13.58 m/s B. 33 m/s C. 2.75 m/s D. 5.42 m/s

Weegy: a. 2.75 m/s
esorense|Points 160|

User: 7. If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be A. higher than the mercury in the vessel, and shaped like the outside of an umbrella. B. lower than the mercury in the vessel, and shaped like the outside of an umbrella. C. higher than the mercury in the vessel, and shaped like the inside of a bowl. D. lower than the mercury in the vessel, and shaped like the inside of a bowl.

Weegy: *D. higher than the mercury in the vessel, and shaped like the inside of a bowl.
piash|Points 3199|

User: 8. 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. 96 percent B. 97 percent C. 92 percent D. 94 percent

Weegy: The answer is: A. 94 percent (which is easily calculated, 3760/4000x100).
Koolsum|Points 1456|

User: 10. What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? A. 6,000 J B. 12,000 J C. 2,940 J D. 5,880 J

User: 10. What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? A. 6,000 J B. 12,000 J C. 2,940 J D. 5,880 J

User: 11. In a practical machine, the power output is _______ the power input. A. equal to B. smaller than C. multiplied by D. larger than

Weegy: C. smaller than
koaley|Points 6262|

User: 12. The ratio of output power to input power, in percent, is called A. work. B. horsepower. C. conductivity. D. efficiency.

Weegy: The ratio of output power to input power, in percent, is called A. efficiency.
debnjerry|Points 45524|

User: 16. The metric unit of force is the A. nanometer. B. gram. C. newton. D. kilogram.

Weegy: The metric unit of force is the newton.
pathwise|Points 1257|

User: 17. An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 4,586.4 J B. 468 J C. 47.75 J D. 764.4 J

Weegy: D. [ 4,586.4 J use the formula W = mgs W stands for work done in joules m stands for mass of the object g stands for gravity s stands for the distance the object is lifted W = mgs W = 78kilograms?9.8m/s2?6meters W = 4586.4 J (joules) answer would be 4,586.4 J ]
chopsuey|Points 72|

User: 18. A steel block has a volume of 0.08 m³ and a density of 7,840 kg/m³. What is the force of gravity acting on the block (the weight) in water? A. 6,150.64 N B. 7,600.18 N C. 5,362.56 N D. 6,700.56 N

Weegy: A. 5,362.56 N is the answer.
OxTornado007|Points 6809|

User: 19. The main difference between speed and velocity involves A. direction. B. gravity. C. distance. D. weight.

User: 21. According to Ptolemy's model of the movement of celestial bodies, A. the earth rotates around the moon. B. the sun is the center of the universe. C. planets orbit in circular paths around the earth. D. the earth rotates around the sun.

Weegy: According to Ptolemy's model of the movement of celestial bodies,: C. planets orbit in circular paths around the earth.
andrewpallarca|Points 20822|

User: 22. In which of the following units is acceleration expressed? A. Meters per second squared B. Kilograms C. Newtons D. Foot-pounds

Weegy: B) Foot Pounds
innersource|Points 7205|

User: 24. If a gas has a gage pressure of 156 kPa, its absolute pressure is approximately A. 256 kPa. B. 100 kPa C. 56 kPa. D. 300 kPa.

Weegy: The answer is A. 256 kPa. ; P=Pg+Po P=absolute pressure, Pg=gauge pressure, Po=atmospheric pressure. Answer is A . 256 kPa
bongche|Points 3864|

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Asked 4/1/2013 3:09:30 PM
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