1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MrMuchimi
3 years ago
6

A weightlifter lifts a set of weights a distance of 2.00 m. If the weights have a mass of 60.0 kg and are pushed vertically upwa

rd at a constant speed, how much work is done on the weights?
Physics
2 answers:
Sergio [31]3 years ago
6 0
The amount of work done on the weights would be approximately 15.0 Kg of work
leonid [27]3 years ago
5 0

Answer:

1200Nm

Explanation:

Work is said to be done if a force applied to an object causes the object to move through a distance. Mathematically,

Work done = Force × Distance

Given distance = 2m

Mass of the body = 60kg

The weight W of the bodies =mass × acceleration due to gravity

W = 60×10 = 600N

Work done = 600×2

Work done = 1200Nm

1200Nm of work is done on the weights

You might be interested in
Consider a system of a cliff diver and the earth. the gravitational potential energy of the system decreases by 28,000 j as the
olga2289 [7]

The decrease in gravitational potential energy of the system is given by

\Delta U = (mg) \Delta h

where

m is the mass, g is the gravitational acceleration, and \Delta h is the variation of height of the system.


(mg) also corresponds to the weight of the diver, therefore if we rearrange the equation and we use \Delta U=28000 J and \Delta h=32.0 m, we can find her weight:

mg=\frac{\Delta U}{\Delta h}=\frac{28000 J}{32 m}=875 N

5 0
3 years ago
WheN a car is driven some distance the air pressure in the tyre increases,why?
KatRina [158]
Over the course of a long drive, as a result of alternating between braking and acceleration and of course steering, tires get heated up. When this happens, the air within the tires gets heated up, causing the air within the tire to expand. This expanding air exerts force on the tire from inside thus increasing tire pressure.
8 0
3 years ago
An electron is pushed into an electric field where it acquires a 1-V electrical potential. Suppose instead that two electrons ar
sleet_krkn [62]

Answer:

0.5 V

Explanation:

The electric potential distance between different locations in an electric field area is unaffected by the charge that is transferred between them. It is solely dependent on the distance. Thus, for two electrons pushed together at the same distance into the same field, the electric potential will remain at 1 V. However, the electric potential of one of the two electrons will be half the value of the electric potential for the two electrons.

6 0
3 years ago
a train is moving 35m/s to the east. it speeds up to 42 m/s east over the course of 40 seconds. what is the trains acceleration?
lianna [129]

Answer:

0.175 m/s²

Explanation:

Given:

v₀ = 35 m/s

v = 42 m/s

t = 40 s

Find: a

v = at + v₀

42 m/s = a (40 s) + 35 m/s

a = 0.175 m/s²

7 0
3 years ago
What do you call the procedure that helps you determine the volume of an irregularly shaped object, while using a graduated cyli
Lena [83]
Water displacement. You fill a graduated cylinder with an amount of water, place the object inside the graduated cylinder, and then measure the new water level. The change in volume of the water is the volume of the object, assuming the object was completely submerged. 
8 0
3 years ago
Other questions:
  • Which best describes the current atomic model?
    11·2 answers
  • Name the two components that make orbital motion, and explain why objects stay in orbit.
    10·1 answer
  • Please help!
    11·2 answers
  • A 30 kg child sitting 5.0 m from the center of a merry-go-round has a constant speed of 5.0 m/s. while she remains seated in the
    5·1 answer
  • An agent has just listed a power plant. This is an example of what type of real estate?
    7·1 answer
  • Which of the following is an example of acceleration? Select one:
    8·1 answer
  • A snail crawls along at a constant rate of 3 centimeters per minute in a northly direction. This is a description of the snails
    14·2 answers
  • a bus travelling on a straight road at 25m/s accelerates uniformly at 5m/s squared for 2 seconds. find its speed in kilometres p
    9·1 answer
  • a truck of mass 2 500 kg travelling at the speed of 20 ms–1 to the right collide head-on with another car of mass 1 000 kg. If b
    10·1 answer
  • Why does the book with more mass feel heavier in your hand
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!