Answer:
Power = Current × Voltage
Explanation:
Units:
Power = Watts
Current = Àmperes
Voltage = Volts
consider the motion in vertical direction
v = initial velocity in the vertical direction = ?
v' = final velocity in the vertical direction at the highest point = 0 m/s
a = acceleration due to gravity = - 9.8 m/s²
h = maximum height = 12.2 m
Using the kinematics equation
v'² = v² + 2 a h
0² = v² + 2 (- 9.8) (12.2)
v = 15.5 m/s
let assume that velocity of launch be v₀
θ = angle of launch = 13
vertical component of the velocity of launch is given as
v = v₀ Sinθ
15.5 = v₀ Sin13
v₀ = 69 m/s
Answer:
A hydraulic lift for automobiles is an example of a force multiplied by hydraulic press, based on Pascal's principle. The fluid in the small cylinder must be moved much further than the distance the car is lifted.
Answer:
The thermal Energy absorbed each hour = 750420 kJ
Explanation:
Efficiency of a Carnot engine = W/Q = (Th-Tc)/Th ............... Equation 1.
W/Q = (Th-Tc)/Th
making Q the subject of the equation above,
Q = W(Th)/(Th-Tc)........................ Equation 2
Where Q = input power, W = output power, Th = temperature of the hot reservoir, Tc = Temperature of the cold reservoir.
<em>Given: W= 148 kW, Th = 727 °C = 727 + 273 = 1000 K, Tc = 17 °C =17 + 273 = 290 K.</em>
<em>Substituting these values into equation 2,</em>
<em>Q = 148(1000)/(1000-290)</em>
<em>Q = 148000/710</em>
Q = 208.45 kw
The thermal Energy absorbed each hour = 208.45 kW × 3600 s
The thermal Energy absorbed each hour = 750420 kJ