Answer:
Explanation:
If F be the force acting on the car to stop it
work done by force = change in kinetic energy
F X 80 = 1/2 m x 20²
F = 2.5 m
If speed is 10m/s
for distance d , the equation is
F x d = 1/2 x m x 10²
2.5 m x d = 1/2 x m x 10²
d = 20 m
If velocity is 40 m /s
F x d = 1/2 x m x 40²
2.5m x d = 1/2 m x 1600
d = 320 m
For v = 5 m/s
F x d = 1/2 m x 5²
2.5 m x d = 1/2 m x 5²
d = 5 m .
The small bang lol, sorry if this is an actual question but i’m pretty sure no one knows the answer- at least i don’t! good luck if it’s an actual question on and assignment or quiz, very sorry. xoxo
Answer:
d = 5 inch
Explanation:
First to all we need to get the expression to calculate the horsepower.
The expression to use is the following:
hp = k * v * d³ (1)
Where:
hp: horsepower
v: speed (in rpm)
d: diameter
k: constant of horsepower.
The value of k, because is a constant, will be the same when the shaft is transmiting 375 hp at 50 rpm. So, with the first data, we can calculate the value of k, and then, the value of the diameter
Solving for k in (1) we have:
k = hp / v * d³
replacing the data:
k = 36 / 75 * 2³
k = 0.06
With this value, we can solve for d and we have:
d = ∛hp / k * v
d = ∛375 / 50 * 0.06
d = 5 inch
Human eye could perceive this visible light and used it to look at the objects.
<u>Explanation:
</u>
There are 3 forms of radiation emitted by the sun. They are Infrared radiation, Ultra Violet radiation as well as visible radiation.
Visible light is the type of light can perceive by the human eye and utilizes to see the objects.
Since the sun is hotter (5800 K) than the earth, it emits mostly the radiation energy in the form of this visible light.