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A beam of electrons is first accelerated (from rest) through a region of electric potential difference V=10 keV and then made to go through a slit of width a.
a) What is the value of the momentum (px) of each electron after having passed through the electric potential region?
b) Find the width of the slit that gives the minimum dispersion or image width (on either side) of the electrons projected on a screen a distance D=0.5 m away from the slit using the uncertainty relation that is given on the formula sheet.
c) Are wave like or particle like properties of the electrons being observed in this situation?
On a cool morning, when the temperature is 15deg Celsius, you measure the pressure in your car tires to be 30 psi. After driving 20 mi on the freeway, temperature of your tires is 45 deg Celsius. What pressure will your tire gauge now show.
A mixture of ethyl alcohol (molecular mass = 46.1 u) and water (molecular mass = 18.0 u) contains one mole of molecules. What mass m of water does it contain
A horizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 7.5 rad/s about a fixed vertical axis through its center. What is the mass of the turntable
A woman throws a ball at a vertical wall d = 3.0 m away. The ball is h = 1.5 m above ground when it leaves the woman's hand with an initial velocity of 12 m/s at 45°. How long was the ball in the air after it left the wall
A torque of 11Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
Adjacent antinodes of a standing wave on a string are 15.0 cm apart. Find the maximum and minimum transverse speeds of a point at an antinode
A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown in Figure 8. Find her final speed at the top
A car traveling at a speed of vo = 60 m/s stops smoothly (that is, its deceleration is constant) over a distance of d = 167 m. What is its acceleration during the time it is stopping.
The summit of a mountain 2450 m above a baseball camp is measured on a map to be 4 m horizontally from the base camp in a direction 32.4 west of the north. Illustrate what are the components of the displacement vector from the camp to the summit
Camera A has a lens with an aperture diameter of 8.30mm, What exposure time should be used with camera B in photographing the same object with the same film if this camera has a lens with an aperture diameter of 23.5mm
A uniform diving board, 12m long and 20kg mass is placed on a platform. How far can a 60kg person walk down the board from the edge of the platform without board tipping over.
Suppose the same masses are used for a force table experiment as were used in Part 1, but each pulley is moved 180° so that the 0.100 kg mass acts at 200°, and the 0.200 kg mass acts at 270°. What is the magnitude of the resultant in this case
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