Hi, i have two questions from my assignment that i am having a very hard time understanding...
1. A piece of Nichrome wire has a radius of 6.5x10^-4 m. It is used in a laboratory to make a heater that uses 4.00x10^2 W of power when connected to a voltage source of 120 V. Ignoring the effect...
Stuck on some Physics, help please! (Work and Energy)?
K this first one I am not sure how to do it.. i did the second part, that's because i had all the variables but in this one i dont...
ok this is about skeleton racers... the track total height is 104m, in the absence of nonconservative...
my prof wrote down some equations for the first one
Fg = G(mMn/Rn^2 = m(GMn/ Rn^2)
and then
Fg = mabut I am not sure about the second one...thats mainly why I am asking.. is because i don't know how to do it...
neutron star has a mass of 2.0 x 10^30 kg, and a radius of 5.0 x 10^3 m
suppose an object falls from rest near the surface of such a star. how fast would it be moving after it had fallen a distance of 0.010 m? (gravity constant over star, and star is not rotating)
and
a person in a...
I though i was starting to understand but now i don't know anymore.. so please help! i have tried to figure it out myself .. but i just don't know where to start
1.A bullet is fired from a rifle that is held 1.6m above the ground in a horizontal position. The initial speed of the bullet is...