Answer:
Explanation:
In physics, work can be described as force multiplied by the displacement of the object (distance caused by the force acted on the object).
Work is a form of energy, therefore, it is measured in joules.
If Alex pushed on an object with 10N of force, and the object moved 2 meters, the work of Alex will be equal to:
W = Ft
W = 10N * 2m
W = 20 Joules
But, if we have John, that pushed on an object with 2N of force, but, since the object was way smaller, therefore it had way less inertia, the object moved a distance equal to 10 meters. Let's also calculate his work.
W = Ft
W = 2N * 10m
W = 20 Joules
And we got the same result.
Work can also be used to calculate power.
Power is equal to P = Work / time
It can also be written as P = delta Work / delta time
Power is measured in joules per second.
With power you can make the difference between someone that got a 2 kg object up in 2 second, and someone that got a 2 kg object up in 5 second.
The more powerful one would be the one who managed to make the same work in less time.
Hope it Helped!
It is an Exothermic reaction
Answer:
Electrons
Explanation:
Only Protons and Neutrons are found in the nucleus
Answer: Planet A is closer to the Sun and has much greater atmospheric pressure. This suggests that planet A has a thicker atmosphere. Planet A's atmosphere is also mostly made of carbon dioxide, which is a greenhouse gas. This gas retains heat, raising the surface temperature of planet A.
Explanation:
Answer:
Option A, Robinson Crusoe's
Explanation:
A far sighted person uses eyeglasses with Convex lenses. These lenses are thick at the center and thin at the edges. A farsighted person is unable to focus on nearby objects because the eye ball of a farsighted person is smaller than the normal size due to which all the refracted rays could not meet at the retina.
A convex lenses focuses the light at one point, this property will help in focusing the sunlight at one point for starting fire.