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Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor. The force of friction on
4 answers
asked by
Peg
6,534 views
A flat-bottom river barge is 30.0 ft wide, 85.0 ft long, and 15.0 ft deep. (a) How many ft3 of water will it displace while the
4 answers
asked by
Justin
2,018 views
You walk 30 m south and 30 m east. Find the magnitude and direction of the resultant displacement both graphically and
6 answers
asked by
Anonymous
4,376 views
Calculate the time it takes for the voltage across the resistor to reach 11.0V after the switch is closed.
the total resistance
4 answers
asked by
Ti
4,712 views
On the surface of the Moon an astronaut has a weight of Fg = 120 N. The radius of the Moon is Rm = 1.74 x 106 m, the
4 answers
asked by
Precious
4,950 views
A pitched ball is hit by a batter at a 50° angle and just clears the outfield fence, 97 m away. Assume that the fence is at the
3 answers
asked by
Gogol
1,104 views
A rubber ball of mass m1= 10kg is moving to the right with speed v1= 10m/s. it collides elastically with another ball of mass
1 answer
asked by
Alan
754 views
An object weighs 12 N on earth. When it is brought to Mars, it has a weight of 4.8 N. What is the acceleration due to gravity on
2 answers
asked by
Sarah
528 views
Ms. Sue could you please explain this to me. Imagine you need to deliver a piano over three steps. A longer ramp translates into
3 answers
asked by
Georgia
493 views
Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction
1 answer
asked by
Peg
432 views
How long would it take a 4.50-kW motor to raise a 175-kg boiler to a platform 15.0 m
above the floor? Is this correct?
4 answers
asked by
Jay
1,610 views
The Hoover Dam is 726 ft high. Find the potential energy of 1.00 million ft3 of water
at the top of the dam.(1 ft3 of water
4 answers
asked by
Jay
994 views
A 250 kg part falls from a plane and hits the ground at 150 km/h. Find its kinetic energy.
Would I need to convert 150km/h to
1 answer
asked by
Jay
664 views
A pile driver falls a distance of 1.75 m before hitting a pile. Find its velocity as it hits
the pile. So its 1.75x9.80=17.15?
4 answers
asked by
Jay
1,077 views
A lifeguard swims with her head just above the water. What is the volume of the submerged part of her body if she weighs 600 N?
W
3 answers
asked by
Justin
721 views
How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F
1 answer
asked by
Justin
394 views
How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F
-specific heat for copper
1 answer
asked by
Justin
444 views
A rope exerts a 274N force on an 80kg skier up along a hill inclined 12 degrees. A frictional force of 100N opposed the motion.
1 answer
asked by
Yoda
431 views
An air plane flies 20 km in a direction 60 degree west of north then 40 km straight east and then 10 km in a direction 30 degree
4 answers
asked by
Kundan Subedi
889 views
Derive an expression for kinetic energy of an object mass m moving with uniform velcoity v what happens to the kinetic energy of
1 answer
asked by
Danial
400 views
I don't understand how I would know what would happen if it collided or bounced, etc. How do I solve a question like this?
5 answers
asked by
Jake
736 views
You want to do a physics experiment, so you put a box at the edge of a merry-go-round, 8.0 m in diameter and 1.5 m above the
1 answer
asked by
Abdallah
107 views