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2 years ago

Your washer has power of 450 watts, and your dryer has a power of 3000

Physics

1 answer:

LiRa [457]2 years ago

3 0

The electrical energy used = 3.11 x 107 J; option A

<h3>What is the energy used?</h3>

The energy used is calculated using the formula below:

Energy = Power × time

The total power = 3450 Watts

Total time in seconds = 2.5 × 3600 = 9000 s

Energy used = 3450 × 9000 = 3.11 x 107 J

In conclusion, electrical energy is the product of power and time.

Learn more about electrical energy and power at: brainly.com/question/23218537

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Answer:

Coordinates of event in system K are (x,y,z,t)=(5.103m , 3.7m , 3.7m , 1.57×10⁻⁸s)

Explanation:

To find the coordinates of event in system K ,we have to use inverse Lorentz transformation

$x=\frac{x^{|}+vt^{|} }{\sqrt{1-\frac{v^{2} }{c{2} } } } \\x=\frac{2m+0.92c(0) }{\sqrt{1-\frac{(0.92c)^{2} }{c{2} } } }\\x=5.103m\\y=y^{|}\\ y=3.7m\\z=z^{|}\\ z=3.7m$

for t

$r=\frac{1}{\sqrt{1-v^{2} } } \\r=\frac{1}{\sqrt{1-(0.92)^{2} } } \\r=2.551\\t=r(t^{|}+vx^{|}/c^{2} )\\t=2.551(0s+(0.92c)(2)/c^{2} )\\t=1.57*10^{-8}s$

Coordinates of event in system K are (x,y,z,t)=(5.103m , 3.7m , 3.7m , 1.57×10⁻⁸s)

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