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sveticcg [70]
3 years ago
9

A mother pushes a baby stroller 10 meters by applying 40 newtons of force. How much work was done?

Physics
2 answers:
nikklg [1K]3 years ago
7 0
The answer is the last one


I hope that helped
arlik [135]3 years ago
3 0

Answer

400 joules

Explanation:

ima make it simple to get the joules all you do is multiply the amount of meters which in this case is 10 times the amount of newton which is this constant is 40 newtons and you know the answer

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Sound is.....<br> A. matter<br> B. Vibration<br> C. potential energy<br> D. electromagnetic energy
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The answer is C. Potential energy  

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3 years ago
Which factor affects elastic potential energy but not gravitational potential energy?
julsineya [31]

Explanation:

The energy stored in an elastic objects as a result of deformation is called elastic potential energy. The energy stored in a spring is given by :

E=\dfrac{1}{2}kx^2

Where

k = spring constant

x = compression or stretching in an spring

While gravitational potential energy is given by :

PE = mgh

where

m = mass

g = acceleration due to gravity

h = height from ground

So, the factor affecting elastic potential energy but not gravitational potential energy is " spring constant ".

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4 years ago
Read 2 more answers
What type of waves move energy forward, but the source moves up and down?
Tresset [83]
Transverse waves is the answer.
Hope I helped if you need anything else ask me
3 0
4 years ago
Write the abbreviation for each of the following units: meter, kilometer, centimeter, millimeter,
nikdorinn [45]
M=meter, km=kilometer, mm=millimeter, mg=micrometer, cm=centimeter
3 0
3 years ago
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You tie a cord to a pail of water and swing the pail in a vertical circle of radius 0.710 mm . What minumum speed must the pail
Blababa [14]

Answer:

The minumum speed the pail must have at its highest point if no water is to spill from it

= 2.64 m/s

Explanation:

Working with the forces acting on the water in the pail at any point.

The weight of water is always directed downwards.

The normal force exerted on the water by the pail is always directed towards the centre of the circle of the circular motion.

And the centripetal force, which keeps the system in its circular motion, is the net force as a result of those two previously mentioned force.

At the highest point of the motion, the top of the vertical circle, the weight and the normal force on the water are both directed downwards.

Net force = W + (normal force)

But the speed of this motion can be lowered enough to a point where the normal force becomes zero at the moment the pail reaches the highest point of its motion. Any speed lower than this value would result in the water spilling out of the pail. The water would not be able to resist the force of gravity.

At this point of minimum velocity,

Normal force = 0

Net force = W

Net force = centripetal force = (mv²/r)

W = mg

(mv²/r) = mg

r = 0.710 m

g = 9.8 m/s²

v² = gr = 9.8 × 0.71 = 6.958

v = √(6.958) = 2.64 m/s

Hope this Helps!!!

7 0
3 years ago
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