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☆☆☆☆☆Cards in this guide (14)
Four students are moving 80 N boxes from the floor to a shelf 4 meters high Student A moves 8 boxes in 10 minutes Student B moves 6 boxes in 8 minutes Student C moves 4 boxes in 6 minutes and st
student A
A sailor pulls a 2000 kilogram boat 25 meters along the dock with a rope attached to the boat that makes a 45 degree angle with the dock. How much work is done by the sailor if he exerts a force of 4
7,071 J
A man is carrying cement blocks weighing 200 newtons up a ladder to a platform 7 meters above the ground He has been carrying 2 blocks per minute How much work is done in 10 minutes
28,000 J
A bicycle is an example of what machine
A bicycle is an example of a complex machine, consisting of interacting simple machines.
What factor prevents a machine from operating at 100 percent efficiency
Friction((:
How much work is done when a 700 N refrigerator is lifted straight up a distance of 4 meters
Work = Force (N) x Distance (m) Therefore, the units of work are N-m, or Newton-meters. F=700N D=4m W=FxD = 700x4 = 2800N-m
V-cube 7 or megaminx
megaminx
How much work is done when a 6.0 n weight is raised 2.0 meters off the ground
12j
How many newtons does a 10 kg box weigh
A 10 kg box weighs a touch more than 98 newtons (98.0665002864).
A man pulls a 50 kilogram box 20 meters across the floor with the aid of a rope tied to the box The rope makes an angle of 30 degrees with the horizontal In pulling the box the man exerts a force
1,732j
How many joules of work are done when a 20 kg box is lifted 5 meters above the floor
980
w=m x g x d
How many joules of work are done when a 20 newton box is lifted 5 meters off of the floor
100
A man pushes a lawn mower with a force of 25 newtons The lawn mower has a mass of 17 kilograms and the handle makes an angle of 60 degrees with the horizontal How much work is done if the lawn mower
6,250 J
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi
250 newtons
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