Homework Statement
A missile and an aircraft are separated initially by a distance 'L' on the y axis. The aircraft starts moving along the x-axis with constant velocity 'u'. The missile is heat seeking which makes it point towards the aircraft at all times. The velocity of missile is 'v'...
When a throwing knife is thrown why does it only hit its blade end ( not the grip end)? The knife has been imparted with a spin and there is a 50:50 probability that its blade end will hit (actually a bit less).
It would be better if you explain assuming the blade's CM has velocity 'v' and is...
Let the mass of the book be 'm' and the spring constant be 'k'. When the book has achieved static equilibrium we know two things.
1) The force of gravity is trying to pull the book downwards. This force = m*g ( g is the gravitational constant for Earth and equals 9.81m per second squares )
2)...
Homework Statement
I need to find to resistance and am having problem as I do not know KCL's. All I know is the total resistance in series or parallel. I have attached the image. Find resistance b/w the 2 ends.Homework Equations
If you have Resnik & Halliday open page 723(Vol2). and see figure...
My books are definitely wrong. If you are approaching the mirror or going away from it the speed would be doubled.But in this case the distance is not doubled because the distance between us and the image is there.
Homework Statement
The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2m/s.The driver sees in his rear view mirror, the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver?
The Attempt at...
This question may not come in the bracket of quantum mechanics but here's the question-
If most of the atom is empty space what gives the illusion of solidity?