Recent content by moonpearl

for #2, there is aditional information and no friction loss. so you are right, speed entering would equal speed exiting, but how do i calculate that speed? my way of doing it is not yielding the right answer.

hmm, even if i do v=(3gr)^(1/2), solving for r=10, it still does not match the answer. (i'm not sure if that is what you meant for me to do, however :| ) anyway, the given answer is 28 m/s. for question #2, the answer is 39.5m/s. thanks for you help; but more feedback would be awesome!

hi there, I'm planning to take university physics in the fall, but I'm lousy at it and doing some practise problems in advance :( i was doing some loop problems, and I'm extremely confused and disheartened and was wondering if anyone could help me? The set up is pretty simple: - there is a...

my textbook is a conceptual physics textbook...only theory is covered...so there are no examples...

hi, I'm having trouble with another question: 2. A block of weight W is attached to the ceiling by a cord which makes an angle θ = 30° to the vertical, and to the wall by a horizontal cord. If the tension in the cord attached to the ceiling is 20 N, the tension in the horizontal cord will...

thanks for your replies :) i think i finally get it

but that *isn't* the answer...the answer given is D. I understand why it would be 20...but that's supposed to be wrong. I'm sorry, I'm just really confused.

Hi, I was wondering if anyone could help me with this question? A dump truck filled with pumpkins is traveling at 20 m/s when a pumpkin falls off the back and onto the road, 5 m below. When the pumpkin hits the road, it will be A) 5 m behind the truck. B) 20 m behind the truck. C) 40 m...

Grade 12 physics problems :( One question: Because of absorption, a Polaroid will actually transmit 40% of nonpolarized light incident on it. Two such Polaroids with their axes aligned will transmit a. 16%. b. 24%. c. 30%. d. 32%. e. 40%. The answer is 32% and I have no cue...