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Slav-nsk [51]
2 years ago
14

A spring with k = 136 N/m is compressed by 12.5 cm. How much elastic potential energy does the

Physics
1 answer:
Lorico [155]2 years ago
6 0

As we know,

  • \boxed{ \boxed{potential \:  \: energy =  \dfrac{1}{2} k {x}^{2} }}

where,

  • k = 136 N/m

  • x = 12.5 cm = 0.125 m

now, let's solve to find potential energy :

  • p =  \dfrac{1}{2}  \times 136 \times 0.125 \times 0.125

  • p =    \dfrac{68 \times 125 \times 125} {1000 \times 1000}

  • 1.0625 \:  \:  \: joules
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miss Akunina [59]

Answer:

0.256 hours

Explanation:

<u>Vectors in the plane </u>

We know Office A is walking at 5 mph directly south. Let X_A be its distance. In t hours he has walked

X_A=5t\ \text{miles}

Office B is walking at 6 mph directly west. In t hours his distance is

X_B=6t\ \text{miles}

Since both directions are 90 degrees apart, the distance between them is the hypotenuse of a triangle which sides are the distances of each office

D=\sqrt{X_A^2+X_B^2}

D=\sqrt{(5t)^2+(6t)^2}

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This distance is known to be 2 miles, so

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3 years ago
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Aneli [31]
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5 0
3 years ago
North America experienced all of the following during the last glacial period EXCEPT alpine glaciers covered the Rocky and Casca
Juli2301 [7.4K]

Answer:

the Hudson Bay was covered with alpine glaciers

Explanation:

During the last glacial period, large portions of North America were covered with ice. The majority of the ice was from the ice sheets that were covering Canada and the northern part of the United States, and the alpine glaciers on the mountain ranges. Hudson Bay was all frozen at this point of time. It was not covered with alpine glaciers though, instead it was covered with the ice of the extended ice sheets, with the ice cover reaching up to 2 km in thickness.

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3 years ago
A 120.0 kg crate is placed on a 15.00°
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F = 2820.1 N

Explanation:

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Kinetic energy. the electricity makes the fan move. it uses potential energy and converts it into kinetic energy from the electricity.

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3 years ago
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