Answer:
The thermal efficiency is 43%.
The total amount of energy developed by work is 397 kW in one year.
Explanation:
Given that,
Power output = 0.3 kW
Heat energy = 2400 Btu/h = 0.703 kW
We need to calculate the thermal efficiency
Using formula of efficiency
Put the value into the formula
The thermal efficiency is 43%.
(b). We need to calculate the total amount of energy
Using formula of energy
Hence, The thermal efficiency is 43%.
The total amount of energy developed by work is 397 kW in one year.
Answer:
the answer is static electricity
Answer:
C. 32.7%
Explanation:
% composition = ( mass S / mass H2SO4 ) × 100 = 32.08/ 98.10 × 100 = 32.7 % pls mark brainliest
Answer:
0.38 kN
Explanation:
From newton's second law of motion,
F = m(v-u)/t........................ Equation 1
Where F = Average force exerted on the ball, m = mass of the ball, v = final velocity of the ball, u = initial velocity of the ball, t = time of contact.
Given: m = 55 g = 55/1000 = 0.055 kg, v = 102 ft/s = (102×0.3048) m/s = 31.0896 m/s, u = 0 m/s (initially at rest), t = 0.0045 s
Substitute into equation 1
F = 0.055(31.0896-0)/0.0045
F = 1.709928/0.0045
F = 379.984 N
F ≈ 0.38 kN
