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melomori [17]
3 years ago
7

Energy sources can be placed in two categories: renewable and nonrenewable. How do you think these two energy sources differ fro

m each other?
Physics
1 answer:
Dmitriy789 [7]3 years ago
7 0

Answer:

Renewable energy sources can come again, but nonrenewable is gone forever. For example, coal and gasoline are both nonrenewable.

Explanation:

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The "lead" in pencils is a graphite composition with a Young’s modulus of about 1×1010N/m21×1010⁢N/m2. Calculate the change in l
Tanya [424]

Answer:

b) 0.1 mm

Explanation:

Given that

E= 1 x 10¹⁰ N/m²

F= 4 N

d= 0.5 mm

L = 60 mm

We know that elongation due to force F given as

\Delta L=\dfrac{FL}{AE}

\Delta L=\dfrac{FL}{\dfrac{\pi d^2}{4}\times E}

\Delta L=\dfrac{4\times 60}{\dfrac{\pi \times 0.5^2}{4}\times 10^4}

ΔL = 0.12 mm

Therefore the answer is -

b) 0.1 mm

6 0
2 years ago
A substance has a mass of 2795 g and a volume of 312 cm
denis23 [38]

Answer:

if you are asking for density its 48g/cm^3

Explanation:

3 0
3 years ago
Help!
muminat

Power P is the rate at which energy is generated or consumed and hence is measured in units that represent energy E per unit time t. This is:

P = E/t

Solving for t:

t = E/P

t = 6007 J / 500 W

t = 12.014 s

<h2>t ≅ 12 s</h2>

7 0
3 years ago
a concave mirror of radius of curvature 20cm produces an inverted image three times the size of an object placed on and perpendi
Elis [28]

Answer:

Check attachment for your answer

Good luck

6 0
3 years ago
Energy needs, in total kilocalories per day, are greater during _____________ than any other time of life.
malfutka [58]
Energy needs, in total kilocalories per day, are greater during adolescence than any other time of life. The correct option among all the options that are given in the question is the second option or option "b". Only during the time of pregnancy will a girl require more kilocalories per day than during the time of adolescence. 
5 0
3 years ago
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