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8090 [49]
3 years ago
14

Determine the amount of potential energy of a 5-newton book that is moved to three different shelves on a

Physics
2 answers:
JulijaS [17]3 years ago
4 0
Multiply 5 newton by each height. 1st is 5 joules, 2nd is 7.5, while 3rd is 10 joules.
Elza [17]3 years ago
3 0

Yo sup??

potential energy is given by

U=mgh

mg=5 N

U1=5*1=5 J

U2=5*1.5=7.5 J

U3=5*2=10 J

Hope this helps.

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Yanka [14]

Answer:

V=3.57 × 10^6 m/s

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7 0
3 years ago
A ray of light is incident on a body x what is the reftactive index​
evablogger [386]

Answer:

1.63

Explanation:

If you have the following options:

<u>A.  1.63</u>

B.  1.50

C.  1.49

D.  1.33

E.  1.02

6 0
3 years ago
What best describes the states of nonmetals when they are at room temperature? Most nonmetals are gaseous, but some are liquid o
abruzzese [7]
I think the correct answer from the choices listed above is the first option. The statement that best describes the state of metals when they are at room temperature would be that most <span>nonmetals are gaseous, but some are liquid or solid. Hope this answers the question. Have a nice day.</span>
3 0
3 years ago
Read 2 more answers
What is the resistance of a resistor if the potential difference across the resistor is 1.6 V when a current of 0.5 A flows thro
MrRa [10]

Answer:

3.2Ω

Explanation:

V= IR

1.6V = 0.5A × R

R= 1.6/0.5

  1. R= 3.2Ω
3 0
3 years ago
How does an increase in cold working effect Modulus of Elasticity and why?
VladimirAG [237]

Answer:

There is a decrease in modulus of elasticity

Explanation:

Young's Modulus of elasticity also known as elastic modulus is the deformation of a body along a particular axis under the action of opposing forces along that axis. at atomic levels, it depends on bond energy or strength.

In cold working processes, plastic deformation a metal occurs below its re-crystallization temperature due to which crystal structure of metal gets distorted and as a result of dislocations fractures also occur resulting in hardening of metal but bonds at atomic levels defining elasticity are temporarily affected.

Thus an increase in cold working results in a decrease in modulus of elasticity.

7 0
3 years ago
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