Answer:
the amount of energy needed is 1.8 x 10¹⁷ J.
Explanation:
Given;
mass of the object, m₀ = 1 kg
velocity of the object, v = 0.866 c
By physics convection, c is the speed of light = 3 x 10⁸ m/s
The energy needed is calculated as follows;
E = Mc²
As the object approaches the speed of light, the change in the mass of the object is given by Einstein's relativity formula;
The energy required is calculated as;
E = 2 x (3 x 10⁸)²
E = 1.8 x 10¹⁷ J
Therefore, the amount of energy needed is 1.8 x 10¹⁷ J.
'Controlled Breeding', or selective breeding, is in genetics where people make animals reproduce to make favorable traits appear more often.
Answer:
a) 
b) 
Explanation:
Given:
- mass of copper,
- initial temperature of copper,
- specific heat capacity of copper,
- mass of water,
- initial temperature of water,
- specific heat capacity of water,
a)
<u>∵No heat is lost in the environment and the heat is transferred only between the two bodies:</u>
Heat rejected by the copper = heat absorbed by the water
b)
<u>Now the amount of heat transfer:</u>
∴Entropy change
