Answer:
(a) 2800 J
(b) 31.28 %
Explanation:
Heat intake, Q1 = 8950 J
Heat discard, Q2 = 6150 J
(a) Work = intake heat energy - discarded heat energy
W = Q1 - Q2 = 8950 - 6150 = 2800 J
(b) Efficiency = 1 - Q2 / Q1
Efficiency = 1 - (6150 / 8950) = 0.3128 = 31.28%
Answer:
5.76N
Explanation:
We are given that
Distance between two charges ,
Electrostatic force=
Where k=
Substitute the values then we get
Hence, the electric force between two charges=5.76N
Answer:
Dark matter does not affect our view, humans can see through them.
Explanation:
They do not affect our view because we can see right through the (weakly interacting) dark matter, as they do not interact or interfere with electromagnetic force.
Dark matter are often invisible substances and are difficult to spot because they don't absorb or reflect light.
The average speed is 8 miles
Answer:
(a) , (b)
Explanation:
Let be , and , each resultant is found by using the component method:
(a)
(b)