Recent content by dmitrip

hello, I been doing physics homework and I came across this problem that i think i know how to do but for some reason i cannot get the right answer! any help will be very appreciated thanks a lot:) Homework Statement The highest waterfall in Canada is the Della Falls in B.C. with a...

Homework Statement In his rowboat, Pierre heads directly across a river at a speed of 10 km/h. The river is 120m wide and is flowing at 6 km/h. Suppose Pierre wants to row directly across the river. At what angle relative to the shore should he head? I would really appreciate help with...

Cutoff potential? hello, in the photoelectric effect what is the cutoff potential? the official definition in my textbook is that it is the "smallest potential difference sufficient to reduce the photo current to zero" you guys will probably laugh but that doesn't really make sense to me and I...

Frequency of light? hello everybody, first of all i would like to thank you in advance for answering my questions:) I am currently learning about the foundations of Quantum physics and this statement keeps on coming up and I cannot understand it. What is the frequency of light?? I don't...

can somebody please show me how extacly i can solve this problem using components, i don't know where to start:frown:

Homework Statement A steel ball of mass 0.50 kg, moving with a velocity of 2.0 m/s [E], strikes a second ball of mass 0.30 kg, initially at rest.The collision is a glancing one, causing the moving ball to have a velocity of 1.5 m/s [E 30 N] after the collision. Determine the velocity of the...

hello everybody in a question in my textbook i am asked to calculate my momentum when i am running at my estimated top speed, so i subbed in 10 m/s for the velocity and my weight is 80 kg and since the equation for momentum is P = mv i got the answer: 800 kg x m/s. Now i know that the...