Physics, 04.12.2020 02:40 deadman7628
2. An object is supported by a spring attached to the ceiling. What are the forces acting on the object?
a. The mass of the object in the downward direction and the supporting force of the spring in the
upward direction.
b. The mass of the object in the downward direction and the supporting force of the spring in the
downward direction.
c. The weight of the object in the upward direction and the supporting force of the spring in the
downward direction.
d. The weight of the object in the downward direction and the supporting force of the spring in the
upward direction.
e. The weight of the object pulling on the Earth and downward supporting force of the spring
Answers: 1
Physics, 22.06.2019 07:00
Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount
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Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?
Answers: 1
Physics, 22.06.2019 19:00
1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)
Answers: 1
2. An object is supported by a spring attached to the ceiling. What are the forces acting on the obj...
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