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natta225 [31]
3 years ago
15

Physics question, please show work for brainliest :)

Physics
2 answers:
Wittaler [7]3 years ago
8 0

The answer is D. 4200J

Because 10 x 420 = 4200

loris [4]3 years ago
4 0

D) 4200 J because the formula you use is Work= Constant force (n)ewtons x distance moved in the direction of force (meters). So, 10mx420n=4200 J

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What is the sequence of energy transformations from the moment the ball is dropped to the moment the board is bent to its maximu
Mila [183]

Answer:

B

Explanation:

Transformation of energy involves conversion of energy from one form to another for example our movement around involves the conversion of chemical energy stored in the food we eat to other forms of energy such as kinetic energy for the movement, electrical energy in the neurons for impulses and others

The ball posses gravitational potential energy since it is held at a displacement to the ground ( zero point) and when released, the gravitational potential energy is converted to kinetic energy which leads to the fall of the ball until it is at zero displacement to the earth. The board likewise when bent to its maximum extent stored elastic potential energy as a result of the partial displacement of its constituent particle provided it is  not stretch beyond its elastic limit which can lead to deformation of the board and the elastic potential energy lost.

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According to the Natural Resources Defense Council, what is the largest contributor to land pollution?
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When the area over which pressure is applied is increased,
Tema [17]

Answer:

A. the pressure decrease

Explanation:

pressure decreases when the surface area over which a force is applied increases. pressure increases when the surface area over which force is applied decreases.

3 0
3 years ago
A wave travels at 175 m/s along the x-axis.If the period of the periodic vibrations of the wave is 3.00 milliseconds,then what i
OlgaM077 [116]

Answer:  

<h2>E) 52.5 cm</h2>

Explanation:

Step one:

given data

period T= 3 milliseconds= 0.003

velocity v= 175m/s

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Step two:

we know that f=1/T

the expression relating period and wave lenght is

v=λ/T

λ=v*T

λ=175*0.002

λ=0.525m

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=52.5cm

The wavelength of the wave is E) 52.5 cm

7 0
2 years ago
Which of the following statements apply to electric charges?
Gre4nikov [31]

Answer:

The statement "If a positively charged rod is brought close to a positively charged object, the two objects will repel " applies to electric charges.

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2. Negative charge

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When a positively charged rod is brought close to a positively charged object, the rod and the object will repel.

6 0
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