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3 years ago

12

Ok, so this question is probably really easy but I can't really be bothered to answer it, terrible I know, but I thank all usefu

l answers

1 answer:

Dvinal [7]3 years ago

3 0

Without a bulb energy cant go through and it would be an open circuit blocking the energy from coming out.

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3 years ago

You and your bicycle have combined mass 80.0 kg. When you reach the base of a bridge, you are travelling along the road at 7.50

Sonja [21]

We have that K.E and work done is

$K.E=-1890J$
$W=2186J$

From the Question we are told that

mass= 80.0 kg

Velocity= 7.50 m/s.

vertical distance of 5.20 m

Slowed to 3.00 m/s.

Generally the equation for Kinetic energy is mathematically given as

$K.E=\frac{mv^2}{2}-\frac{mv^2}{2}\\\\K.E=\frac{80*3^2}{2}-\frac{80*7.5^2}{2}$

$K.E=-1890J$

B)

$P.E=mgh\\\\P.E=80*9.8*5.2\\\\P.E=4076$

Therefore

$W=4076-1890J$

$W=2186J$

For more information on this visit

brainly.com/question/12669551?referrer=searchResults

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3 years ago