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This seems really easy but I am having a really hard time getting the correct answer to this question. Any help would be much appreciated. A ray in air is incident on a glass plate whose index of refraction is 1.60. The angle of refraction is one half the angle of reflection. The angle of...

I am having difficulty solving the first part of this problem. I have tried to many ways to find the ratio of m_a/m_b but I can't seem to get the correct answer. Can someone point me in the right direction. Thanks.

Thank you. This is what I got 160m-[0-(80m/s)^2/2(9.8m/s^2)]=486.5m Also, I had another question about horizontal projectile motion. Why does the distance of two packages steadily increase as they fall out of a plane going at constant speed. I thought the distance would remain...

Problem 1 x=160m and v=80m/s Problem 2 x_0=160m, v_0=80m/s, a=? if it stopped accelerating, I would assume that the acceleration would be decreasing as the rocket coasted upward. Would this be correct?

This problem seems simple but I'm just not getting the correct answer, please help thank you. A test rocket is fired straigt up from rest with a net accerleration of 20m/s^2. After 4 seconds the motor turns off, but the rocket continues to coast upward. What maximum elevation does the rocket...

I think I figured out question 2. Since the question states that there is no recombination than the F1 progeny would have to come out 1/2 XXYY and the other 1/2 xxyy. Same goes for the F2 generation. So the answer must be d, right?

G1 Phase and Genotype I need help with two questions. I am unable to find the first answer from my book. I have an idea of what the answer is but I'm not positive. Thank you. At the G1 phase of the cell cycle, a eukaryotic chromosome consists of a)one long linear DNA molecule...

Find the points at which the function f(x,y,z)=x^8+y^8+z^8 achieves its minimum on the surface x^4+y^4+z^4=4. I know 8x^7=(lamda)4x^3 8y^7=(lamda)4y^3 8z^7=(lamda)4z^3 x^4+y^4+z^4=4 Case1: x not equal to 0, y not equal to 0, and z not equal to 0 I get 3(4th root of 4/3 to the eigth)...

What if D is a closed disk with radius 1 and center (1,0). That would make the polar coord. x=(r cos(theta)-1) and y=(r sin (theta)).

Please help. Thank you.

A rectangular study area is to be enclosed by a fence and divided into two equal parts, with a fence running along the division parallel to one of the sides. If the total area is 384 ft^2, find the dimensions of the study area that will minimize the total length of the fence. How much fence...

ooh..ok So I would use the pythagorean theorem to find the angle and then use equation a=g sin (theta). Once I have found "a" then I can calculate f=ma. Am I on the right track? Thanks!

Interesting...that is all the information I was given. So I wouldn't calculate acceleration since the cyclist is working against gravity. If I used f=mg (g=-9.8m/s^2)would that determine the total force?

How do I go about solving this equation. Thanks. A 50kg cyclist, pedaling at 20 km/hr = 5.56m/s, climbs a 1 km hill in 30mins (.556m/s). What average total force on her bicycle is required for her to make it up the hill in this amount of time? I know that I have to find the acceleration...

I've figured out the problem with your help. Thank you!

Please help me with this question. I understand how to calculate the velocity from the given conditions but I don't know how to figure out the acceleration or the angle. Thanks! A cart is released from rest at the top of a perfectly frictionless air track. After an elapsed time delta t =...