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wel
3 years ago
7

Identify as many energy sources as you can which are used to power light sources

Physics
2 answers:
dolphi86 [110]3 years ago
6 0

solar energy

hydroelectricity

9966 [12]3 years ago
6 0

Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal and natural gas -- and renewable sources like wind, solar, geothermal and hydropower.

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Identify the factors that cause melting and thus the formation of magma. Choose one or more: A. decompression B. compression C.
nordsb [41]

Answer: C Heat Transfer, E Addition of Volatiles and A Decompression

Explanation:

- Decompression melting takes place within Earth when a body of rock is held at approximately the same temperature but the pressure is reduced.

8 0
3 years ago
A taxi is travelling at 15m/s. Its driver accelerates with acceleration 3m/s^2 for 4 s. What would be the new velocity?..... pls
Aleksandr-060686 [28]

Answer:

27 m/s

Explanation:

Given:

v₀ = 15 m/s

a = 3 m/s²

t = 4 s

Find: v

v = at + v₀

v = (3 m/s²) (4 s) + (15 m/s)

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3 years ago
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Nostrana [21]
It might be radiation and reflection but I’m not sure
8 0
3 years ago
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If you wish to warm 100 kg of water by 20°C for your bath, how much heat is required? (Give your answer in calories and joules.)
taurus [48]
Q = mcθ

Where m = mass of water in kg.
c = specific heat capacity in kJ/kg⁰C, c for water = 4200 kJ/kg⁰C
θ = temperature rise in ⁰C

Q = 100*4200* 20    Note here the temperature rise is 20 ⁰C
Q = 8 400 000 J

In calories,  4.2 J = 1 Calorie
=  8 400 000 / 4.2   = 200 000

Q = 200 000 Calories
4 0
2 years ago
Explain why a parachute would be useless if you went to the Moon?
andrezito [222]
Because you would fall so slow that you would not need one.
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3 years ago
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