To travel at constant speed, a car engine provides 24KW of useful power. The driving force on the car is 600N. At what speed doe
1 answer:
Answer:
The speed traveled by the car is 40 meter per second.
Explanation:
The formula for the relation between the power and the force is as follows:
P = Fv
Where F is the force and v is the speed.
As given
To travel at constant speed, a car engine provides 24KW of useful power. The driving force on the car is 600N.
F = 600 N
Convert power from KW to W.
1 KW = 1000 W
24 KW = 24 × 1000 W
= 24000 W
Thus
P = 24000 W
Put these values in the formula.
24000 = 600 × v
24000 = 600v
v = 40 meter per second .
Therefore the speed of the car is 40 meter per second .
You might be interested in
Answer:
Velocity of electron will be
Explanation:
We have given work function of metal
Wavelength of the light
So energy is given by , here h is plank's constant and c is speed of light
So
For a metal we know that
So
Now kinetic energy is given by
So velocity of electron will be
Given :
Pressure, P = 0.4 lb/in².
Depth, h = 42 in.
To Find :
The density of a liquid.
Solution :
Pressure at height h of a liquid of density is given by :
....1)
Here, g = 386.04 in/s²( acceleration due to gravity )
Putting all values in equation 1, we get :
Hence, this is the required solution.