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Compute the De Broglie wavelength
a) an electron with a kinetic energy of 100 eV,
b) a proton with a kinetic energy of 100 eV,
c) an electron in the first Bohr orbit of a hydrogen atom.
An 8.00 gram bullet is fired into a 250gm block that is initially at rest at the edge of a table of height 1.0 m. The bullet remains in the block, and after the impact the block lands 2.0 meters from the bottom of the table. Find out the initial s..
A steel wire on a guitar has a length of 0.500 m and a mass of 3.50 x 10^-3 kg. To what tension must the wire be tightened
A thin uniform rod is rotating at an angular velocity of 8.2 rad/s regarding an axis that is perpendicular to the rod at its center. As the drawing indicates, the rod is hinged at two places, one-quarter of the length from each end.
Mary needs to row her boat across a 100-{rm m}-wide river that is flowing to the east at a speed of 1- {rm m/s}. Mary can row the boat with a speed of 2- {rm m/s} relative to the water.
The shell, with radius R and negligible thickness, has net charge - 4.00 q. Find an expression for the electric field strength outside the sphere
a 5.5 kg bucket of water is raised from a well by a rope. the acceleration of gravity is 9.81 ms2 . if the upward
A 0.55 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1550 J and at its highest point is135m above the launch point. What was the vertical component of its velocity just after launch
the plane of a rectangular coil 4.0 cm by 7.0 cm is perpendicular to the direction of a magnetic field . if the coil
An empty parallel plate capacitor is charged with the charge Q= 5uC (One plate of the capacitor carries the carge +Q and the other carries the -Q). Find the capacitance of the capacitor
Water is flowing at 4.00 m/s in a horizontal pipe under a pressure of 225 kPa. The pipe narrows to half its original diameter. Assume laminar non-viscous flow. What is the pressure in the narrow section
In the figure below, a battery of potential difference V = 38 V is connected to a resistive strip of resistance R = 8.0 Ω. When an electron moves through the strip from one end to the other,
A 10g ball of clay is thrown horizontally at 30m/s toward a 1.5kg block sitting at rest on a frictionless hi surface. The clayts and sticks to the block. What impulse does the clay exert on the block
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