Answer:
9.4 m/s
Explanation:
According to the work-energy theorem, the work done on the car is equal to its variation in kinetic energy, so:
where in this problem:
W = -36,733 J is the work done on the car (negative because the car is slowing down)
is the final kinetic energy of the car
is its initial kinetic energy
Solving for Kf,
Now we can find the final speed of the car by writing the formula for the kinetic energy:
where:
m = 661 kg is the mass of the car
v is the final speed
K = 29,387 J is the kinetic energy
Solving for v,
To solve this exercise we must apply the concepts related to the balance of forces.
For this particular case the force caused on the satellite from the planet must be equivalent to the Centrifugal Force, that is
Where,
G = Gravitational Universal Constant
M = Mass of earth
m = mass of satellite
r = Distance/Orbit
Using the concept of Period through the angular velocity we have,
Finally re-arrange the equation to find the orbit and replacing, we have,
Therefor the orbit would be 14400 kilometers
Answer:
It's the radio waves having longest wavelength
Answer:
t.f. are you sure that's english? it looks like not a real thing
Explanation:
