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A 10-grams stone is shot horizontally at a 2.0-kg wooden block hooked to a relaxed 200 N/m spring (the other end of the spring is fixed against a wall, the spring and the block sitting on a horizontal frictionless table). It is observed that the stone bounces back at 10 m/s and that the block compresses the spring by 4.0 cm. You are dealing here with an inelastic collision (when total momentum is conserved) followed by a spring compression (when mechanical energy is conserved),
a) What was the speed of the block right after the stone bounces off the block?
b) What was the speed of the stone just before collision?
The Stanford Linear Accelerator can accelerate electrons to ener- gies of 50 GeV. What is their de Broglie wavelength? Recalling that waves can only probe structure as small as their wavelength divided by 2, what fraction of a proton’s diameter (d = ..
a rocket is moving through empty space in a straight line with constant speed. it is far from gravitational effect of
A boat takes 4h to travel down a 30km river, then 6.0h to return. How fast is the river flowing
Antennas for radio transmission and reception are particularly effective if they're about a half-wavelength long. What's the appropriate length for an FM antenna
In a uniform electric field of magnitude E, the field lines cross through a rectangle of area A at an angle of 79.0° with respect to the plane of the rectangle. What is the magnitude of the flux through the rectangle
A solid sphere with mass m = 1.5 kg a radius r = 0.20 m rolls without slipping on a flat surface with an angular velocity of ? = 7.2 rad/s. What is the total kinetic energy of the sphere
A 46kg box is being pushed a distance of 7 m across the floor by the force vector P whose magnitude is 144N. The force vector P is parallel to the displacement of the box.
A block of mass 0.243 kg is placed on top of a light, vertical spring of force constant 4 825 N/m, To what maximum height above the point of release does it rise
What was the magnitude of the rocket's acceleration
A filamentary conductor is formed into an equilateral triangle with sides of length L carrying current I. Evaluate the magnetic field intensity at the center of the triangle
A container has a large cylindrical lower part with a long thin cylindrical neck. The lower part of the container holds 12.5 m3 of water and the surface area of the bottom of the container is 5.48 m2. compute the magnitude of the force exerted by t..
Determine what mass of tree sap could be raised from 18°C to its boiling point and then evaporated by this energy
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