Recent content by JassC

Hmm...maybe I did the calculations right but 28.5 for object distance is wrong.

o = 28.5 Plug that in...i/0 = 2.0 Li = 57?

Alright that helped. Thanks. Any ideas for the other question :) ? and there's one more...lol http://img184.imageshack.us/img184/3126/homework10003vk2.jpg

A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 32 degrees relative to the normal. If the indices of refraction of air, water, and glass are 1.0, 1.33, and 1.4 respectively, at what angle does the light leave the glass (relative to its normal)? Answer in...

Alright I got the correct answer. Thanks!

Sorry. But that didn't help me :(

A 29.4 kg box initially at rest is pushed 3.5 m along a rough, horizontal floor with a constant applied horizontal force of 132.853 N. The acceleration of gravity is 9.8 m/s^2 . If the coefficient of friction between box and floor is 0.408, find the work done by the applied force. Answer in...

Yes you can find the constant acceleration.

I'm thinking that I need to find the average velocity. But I'm not sure what to do after. Edit: and for Question 1, i don't know how to do the 2nd part.

Okay I got it... I have 2 more lol Question #1 A 7kg block rests on a horizontal table, attached to a 6kg block by a light string as shown in the figure. The acceleration of gravity is 9.81 m/s^2. What is the minimum coefficient of static friction such that the objects remain at rest...

#1. The force of air resistance on a raindrop is 5 x 10^-5 N when it falls with a terminal velocity of 4.2 m/s. The acceleration of gravity is 9.8 m/s2. What is the mass of the raindrop? Answer in units of kg. How would I do this question? My understanding is to divide the Force of air...

I meant using conservation of momentum or just "FORCE"...

I don't want to make a new thread so I'll ask this one. A 37.9 kg girl is standing on a 98 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless sup- porting surface. The girl begins to walk along the plank at a constant speed of 1.54 m/s to...

Okay cool, I got it . Thanks!

Two carts with masses of 4.3 kg and 3.2 kg move toward each other on a frictionless track with speeds of 5.8 m/s and 4.5 m/s, respec- tively. The carts stick together after colliding head-on. Find their final speed. Answer in units of m/s. I plugged in the numbers into this equation...