Recent content by nicoleb14

It is desired to slip an aluminum ring over a steel bar. At 7.00° C the inside diameter of the ring is 4.000 cm and the diameter of the rod is 4.080 cm. (b) Find the temperature of the ring at which it fits over the bar. The bar remains at 7.00° C. ---- It is desired to slip an aluminum...

the problem doesn't say

thank you sooo muuuch! :D

Vmax=Aw

this is what I am doing: v=u + at 1.4161 = 1.19 + 1.4161t .2261=1.4161t t=.15966 but the correct answer is said to be t=.33 s

average acceleration is v/change in time, but i don't have the change in time? do i use the change in distance: .25m?

I used v^2=u^2as then resultant force = k X extension .650*(-2.8322)-0=k(.25) k=14.7 (i was originally reviewing this problem and also given this answer, but I was having a hard time getting to the answer/didn't know how to start, the answer given for part a was 14.7)

I just need the energy of motion, so i guess that means KE max?

I got the answer for part a: i used v^2=u^2+2as and just continued on from there.. how do i start doing part b?

A 1.2 kg mass attached to a spring oscillates with an amplitude of 5.1 cm and a frequency of 2.1 Hz. What is its energy of motion? I just have to use KE=1/2mv^2 right? do I have to involve the amplitude?

A 0.650 kg block slides on a frictionless, horizontal surface with a speed of 1.19 m/s. The block encounters an unstretched spring and compresses it 25 cm before coming to rest. (a) What is the force constant of this spring? ____ N/m (b) For what length of time is the block in contact with...