Answer
given,
cooling fan revolution = 850 rev/min
fan turns before revolution = 1500 revolutions
θ = 1500 revolution
θ = 1500 x 2 x π
θ = 9424.78 rad
a) using equation of rotation
ω² = ω₀² + 2 α θ
ω = 0 because body comes to rest
0 = 89² + 2 x α x 9424.78
α = -0.42 rad/s²
b) time take for the fan to stop
ω = ω₀ + α t
0 = 89 - 0.42 t
t = 211.9 s
d. a liquid spill on the floor that was not cleaned could be a potential safety hazard of indoor recreation
A liquid spill on the floor that was not cleaned could be a potential safety hazard of indoor recreation.
NOT:
a. slippery rocks and loose gravel
b. flash floods
<span>c. traveling without a compass, map, or GPS</span>
Answer:
a steady level climb until he gets to his constant speed
Explanation:
a steady level climb until he gets to his constant speed
b) intervalul de timp t3 in care prin fata sa trece vagonul urmator
Sper că am ajutat!
The gravitational potential energy has the formula:
PE = mgh
where PE is in joules
m is the mass of the object in kg
g is the acceleration due to gravity
h is the height in m
since you did not give the value of h, i cannot fully answer your quesstion.
PE = (58/1000 kg) (9.81m/s2) h
PE = 0.57h
just substitute the value of h in the equation
