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krok68 [10]
3 years ago
13

Missy watched a storm last night with her brother. During the storm, she witnessed a large lightening bolt. What energy transfor

mation allowed her to see the lightening?
sound


thermal


electrical


light
Physics
2 answers:
Andreyy893 years ago
6 0

Answer:

Me perdí la parte donde ese es mi problema

Explanation:

devlian [24]3 years ago
5 0

Answer:

The answer to the question is light

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An electric pump rated 1.5 KW lifts 200kg of water through a vertical height of 6m in 10 secs: way is the efficiency of the pump
ruslelena [56]

Answer:

80%

Explanation:

Efficiency = Power output / Power input × 100 %

To calculate efficiency we need to find power output of electric pump.

We can use,

Work done = Energy change

Work done per second = Energy change per second

Work done per second = Power

Therefore, Power = Energy change per second

                              = Change in potential energy of water per second

                              =mgh / t

                              = 200× 10×6 / 10

                              = 1200 W = 1.2 kW

Now use the first equation to find efficiency,

Efficiency = \frac{1.2}{1.5} × 100%

                = 80 %

8 0
3 years ago
a ladybug sits at the outer edge of a merry-go-round and a gentleman bug sits halfway between her and the axis of rotation. The
forsale [732]
The gentleman bug's angular speed is the same as the ladybug's (1 rev/s)
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3 years ago
I help much help on 18!!!
ra1l [238]
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4 0
3 years ago
: The maximum theoretical efficiency of a Carnot engine operating between reservoirs at the steam point and at room temperature
Hunter-Best [27]

Answer:

The value is   \eta  =  0.2145  or  21.45%

Explanation:

From the question we are told that

    The first reservoir is at steam point  T_s =  100^o C =  100 + 273 = 373 \ K  

    The  second reservoir is at room temperature T_r  =  20^o C = 293 \ K

Generally the  maximum theoretical efficiency of a Carnot engine  is mathematically evaluated as

     \eta  =  1- \frac{T_r}{T_s}

=>    1 - \frac{ 293}{373}

=>    \eta  =  0.2145

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3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
Aneli [31]

d^2=4^2+3^2\\\\d^2=16+9\\\\d^2=25\\\\d=5

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3 years ago
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