"neutron collides elastically with a helium nucleus"
Homework Statement
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to rebound at an angle θ'2 = 40° from the neutron's initial...
So the x and y components are both 30.4. That would be the x component cancels (30.4-30.4) but the y component would double because its going upwards..?
Homework Statement
A tennis ball of mass m = 0.087 kg and speed v = 43 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45° (Fig. 7-29). What is the impulse given the wall?
Homework Equations
Impulse = M x V
Sin (theta) = opp/hyp
The Attempt at a Solution...
I think i GOT the force required to go up the mountain. Can someone please verify?
Fa - Ff - F// = 0
Fa - umgsin(theta) - mgsin(theta) = 0
Solve for Fa.
Ok, the question as written is:
Question:
A bicyclist is traveling down a hill which has a 9.75 degree incline at a constant velocity of 5.95m/s. The mass of the cyclist and bike combined is 98.7kilograms.
- What is the coefficient of friction of the surface the biker is traveling on...
Sorry, my bad I re-wrote the question without it in front of me. It is going Down and it asks for the rest when it goes up. But how do i find the coefficient?
Nasu, no i am not given an Fa.
All I have is: A biker rides up an 9.75degree hill at a constant speed of 5.95m/s. The biker and bicycle together have a mass of 98.7kg.
Find the coefficient..
What force does the system need to make the biker go up the hill at the same velocity..
What must...
Homework Statement
Hello, How do i find coefficient of friction knowing only mass, velocity and incline for a inclined plane?
Homework Equations
The Attempt at a Solution