Answer:5
Explanation:
Decimal :2
Significant notation :2.4632× 10^2
Answer:
Explanation:
Given:
mass of ice melted, 
time taken by the ice to melt, 
latent heat of the ice, 
Now the heat rejected by the Carnot engine:
Since we have boiling water as hot reservoir so:
The cold reservoir is ice, so:
Now the efficiency:
Now form the law of energy conservation:
Heat supplied:
where:
heat supplied to the engine
Now the work done:
Absorb kinetic energy and soften potentially damaging blows.
Answer:
All of the above statements are true.
Explanation:
All matter is composed of atoms of which have subatomic particles. Subatomic particles are electrons, protons and neutrons. Each particle has electric charges.
Electrons have a negative charge, protons have a positive charge and neutrons have zero charge.
Between two nearby charges initially at rest, a type of forces, called electrostatic, is always established in such a way that, if the charged particles are small enough so that they can be considered punctual, the following conditions are met:
-
The force established between the two has a direction that coincides with an imaginary straight line that joins the two charges.
- The force exerted on one load points towards the other when the two have different signs, one positive and the other negative. (attractive force).
- The sense of force is directed to the opposite side of the charge when both have the same sign (repulsive force).
