Homework Statement
A scanning tunneling microscope (STM) can precisely determine the depths of surface features because the current through its tip is very sensitive to differences in the width of the gap between the tip and the sample surface. Assume that in this direction the electron wave...
Towards the other bead. I got the correct answer by using the force they apply to each other when first released but I'm still confused as to why that's the maximum force. Would the force not get stronger the closer they get together?
Homework Statement
Bead A has a mass of 12.5 g and a charge of -7.74 nC. Bead B has a mass of 28.1 g and a charge of -10.7 nC. The beads are held 12.3 cm apart (measured between their centers) and released. What maximum speed is acheived by each bead? (Enter your answer for Bead A first.)...
I'm on this exact problem with different numbers and I'm fairly certain I've done one of the points right (the one to the left of the negative charge) but I can't figure out where the other point is. The math never gives room for a second point, and even when just looking at it there doesn't...
I'm having some trouble with some homework and I'm hoping someone can help me.
PROBLEM:
#6. Cart1, with mass m, is initially at rest and is struck by cart2,
which has a mass of 336 kg and initial speed of 1.81 m/s. The collision
is elastic and after the collision cart2 continues to move in its...
Alright, I ended up with 42.7s and then solving for initial speed I got 257m/s which the computer accepts as right. Thank you everyone! I was trying to solve for initial velocity in one go which made me solve the range horizontal displacement formula for initial speed instead of time making it...
Does that range formula give show the range though when the landing position is not at the same height as the firing position?
EDIT:wait, yes it does, ALRIGHT! time to try this! I hope I don't have anything complicated in doing a quadratic formula though :S
I wasn't given any equation :( its from my university's randomized homework question generator too so I can't ask any of my course-mates either. Their components end up as
y=-9.81/2t^2+visin31.3t+3250 and I'm looking for y=0m (converted from km)
x=vicos31.3t with x=9370m
I haven't found...
Homework Statement
A person wants to shoot a rocket off of a mountain 3.26 km high so that the rocket, when shot at 31.3° above the horizontal from the very top of the mountain, lands at the foot of the mountain 9.37 km (horizontal distance) away. What initial speed must the rocket have...