Homework Statement
A light beam incident on a glass slide at an angle of 60 ˚, being partly reflected and partly refracted. It notes that reflected and refracted beams are each at 90 ˚ What is the refractive index of glass?
Homework Equations
n1sinσ1 = n2sinσ2
The Attempt at a...
Homework Statement
A motorcycle with a mass of m1 = 200 kg and a speed of v1 = 120 km/h collides with a car of mass m2 = 600 kg, traveling in a perpendicular direction to the motorcycle. After the collision, both vehicles travel in a direction that forms an angle of 60°.
Find the initial...
Hey, dontdisturbmycircles, first of all let me thank you all your time and dedication.
Yes, i know how to derivate and find a minimun of a function. I just was not expecting to come to that kind of solution. Having said that, thanks again for the help. I got it now!
So, after some basic algebra, I got this:
v0 * (t - 6) = 0.2 * t2
-0.2 t2 + v0 t - v0 6 = 0
From the quadratic formula, I get:
(- v0 t +/- √ v02 + 4 * 0.2 * 6 v0) / 0.4
This should give me the time at which she catches the train, right?
Homework Statement
A train pulls away from a station with a constant
acceleration of 0.40 m/s2. A passenger arrives at the
track 6.0 s after the end of the train has passed the
very same point. What is the slowest constant speed at
which she can run and catch the train?
Homework Equations
X...