thank you andrew and gnome, i would get the square of a negative answer and knew that was not right, but indeed I missed the minus sign. Thanks for the explanation gnome it helped me understand what i was doing ! Thank you both bunches XD!
Question:
The radius of a neutron star is 750 times smaller than the Earth's radius, and its mass is 1.8 times larger than the Earth's mass. What is the escape velocity from the surface of a neutron star? (Ignore the fact that, at high speeds, one should not really use mv^2/2 for the kinetic...
k i took a different approach please tell me which one is the correct one:
this time i took Gm/R^2 to get the acc.
for a i got 1.62 m/s^2
o.0 sorry i really have no clue what I am doing :frown:
Ok, please tell me if i am correct, or totally out of it :confused:
What is the acceleration due to gravity on the surface of
(a) the Moon (R=1.74x10^3km, m= 7.35x10^22kg)
(b) Mars (R=3.40x10^3km, m= 6.42x10^23kg)
i used v= square root of m/R
for a i got 6.4993x 10^9
for b i got...
I know that getting tired is independent form work, since there is no work when on constant speed, but I don't know why you get tired does it have to do with energy
I know that the conservative force is a force for which the work is independent of the path. But nothing else. :confused...
You do no net work when you walk at a constant speed . Why do you get tired?
Is the force of a tennis racket acting on a tennis ball a conservative force?
A vase falls to the floor and shatters. Is momentum conserved in the collision?What objects needto be taken into account in describing...
Velocity and Acceleration Please Help!
My problem reads:
A particle is observed to move with the coordinates x(t)=(1.5m/s)t + (-0.5 m/s^2)t^2 and y(t) = 6m + (-3m/s)t + (1.5 m/s^2)t^2. What are the particle's position, velocity, and acceleration? At what time(s) are the velocity's...