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IgorLugansk [536]
3 years ago
13

21. The speed of light is approximately 3.00 x 108 m/s. What is the speed of light in miles per hr?

Physics
1 answer:
postnew [5]3 years ago
7 0

Answer:

6.7*10^8 mi/hr

Explanation:

(3*10^8 m)/1s * (3600 s)/ 1 hr * (1 mi)/ 1609 m

6.7*10^8 mi/hr

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Q: A: Sarah and Maria made a telephone using two cans and a string. It was a very long string. Maria went upstairs in her house
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This contraption is a lot of fun, and you really should try it
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The sound waves move from one can to the other one 
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Which of the following is a heterogeneous mixture?
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That would be Italian dressing because it does not mix completely therefore it is the definition of a heterogeneous mixture
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2. You decide to lift a 25 kg box to a height of 3 meters. How much work will you do while moving
nadya68 [22]

Answer:

W = 735.75[J]

Explanation:

Work is defined as the product of force by distance. Therefore we can use the following equation.

W=F*d

where:

W = work [J] (units of Joules)

F = force [N] (units of Newtons)

d = distance = 3 [m]

But first, we must determine the force that is equal to the product of mass by gravity (weight of the body).

F=m*g\\F=25*9.81\\F=245.25[N]

W=F*d\\W=245.25*3\\W=735.75[J]

4 0
3 years ago
What are the two things that get their current from generator?
Natasha2012 [34]

Answer:

Kinetic Generating Plants

Hydro-electric plants and wind-mills also convert energy into electricity. Instead of heat energy, they use kinetic energy, or the energy of motion. Moving wind or water (sometimes referred to as "white coal") spins a turbine, which in turn spins the rotor of a generator?

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