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Slav-nsk [51]
3 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]3 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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zzz [600]
Answer: 25 kg

Identify the given information.
f = 250 N
a = 10 m/s^2 
 
Choose which formula you should use. In this case, you are finding the mass.
The formula for force is f = ma, so, using this, it is easy to find the mass.

f = ma         Divide by a for both sides
m = f/a        Formula for mass!

The formula for mass is m = f/a, where f is force and a is acceleration.

Substitute.
m = (250 N)/(10 m/s^2)
m = 25 kg

5 0
4 years ago
Which part of the telescope gathers light from a faraway object and reflects it to another mirror?
melamori03 [73]

Answer:

2)primary mirror

Explanation:

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4 years ago
What’s the first step you would take to build a voltaic cell?
TiliK225 [7]

Answer:

In a voltaic cell, current is produced by connecting an oxidation reaction half cell to a reduction reaction half cell in an electrolyte solution. Oxidation and reduction reactions (redox reactions) are chemical reactions involving a transfer of electrons from one atom in the reaction to another. When two different oxidation or reduction reactions are connected electrically by connecting the cathode to the anode, a current is formed. The direction depends on the type of reaction taking place at the terminal.

The first step would be to determine metals to be used as the cathode and the anode.

3 0
3 years ago
An object has a kinetic energy of 14 J and a mass of 17 kg , how fast is the object<br> moving?
Vlad1618 [11]
Use the formula:

E = (1/2) * m * v ^2

For unit consistency, make sure that:

E energy is in joules (J)
m mass is in kilograms (kg)
v velocity is in meters per second (m/s)
So, substituting to the equation:

14= (1/2) * (17) * v^2

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v = (2*14/17)^0.5

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1.9K viewsView 4 Upvoters
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