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A 5.5cm -thick layer of oil (n=1.46) is sandwiched between a 1.1cm -thick sheet of glass and a 2.3 cm-thick sheet of polystyrene plastic (n=1.59).
How long (in ns) does it take light incident perpendicular to the glass to pass through this 8.9 cm-thick sandwich?
a grinding wheel is in the form of a uniform solid disk of radius 6.96 cm and mass 2.04 kg. it starts from rest and
You want to throw a pebble at a window located 9.6 m above the ground, making sure that the pebble hits the lowest part of the window with a strictly horizontal velocity. What is the velocity with which the pebble hits the window
A glass sheet is covered by a very thin opaque coating. In the middle of this sheet there is a thin scratch 1.25×10-3mm thick. The sheet is totally immersed beneath the surface of a liquid.
Consider the nuclear reaction: (2/1)H + (9/4)Be --> (7/3)Li + (4/2) He. How much energy is liberated
A girl throws a ball at a vertical wall 4 m away. The ball is2 m above the ground when it leaves the girl's hand with an initialvelocit of Vo= (10i+10j) m/s. Where does the ball hit the ground
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates, Determine the work done by the net external force acting on the skier
A power supply maintains a potential difference of 79.1 V across a 1.69 KQ resistor. What is the current in the resistor in millamperes
A heavy stone of mass is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass of the stone
When two parallel slits are illuminated with monochromatic light of wavelength 632.8 nm, What is the distance between the parallel slits
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 4.1 rad/s; 45 radians later, its angular speed is 16 rad/s. Calculate (a) the angular acceleration (rad/s2), (b..
two grounded conducting plans meet at an angle 90 degrees at the origin. a point charge q is a distance r0 from the
a 286-g object is attached to a spring and executes simple harmonic motion with a period of 0.220 s. if the total
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