Solve the following equation using the GRASS method 2. A kettle was tested for its energy efficiency. Its power rating was 900 W. The
temperature of 1.0 L of water increased from 24°C to 48°C in a time of 4 minutes
and 30 seconds.

a. Calculate the energy efficiency of the kettle.

b. Why is the kettle not 100% efficient? What happened tỏ the "missing" energy?

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

the closer the planet is to the sun, the larger the gravity

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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