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The drawing shows three materials, a, b, and c. A ray of light strikes the a–b interface at an angle that now barely exceeds its critical angle of 40.0°. The reflected beam then strikes the a–c interface at an angle of incidence that now barely exceeds its critical angle (which is not 40.0°). The index of refraction of material a is na = 1.88. Discover the indices of refraction for the two other materials.
A small electric car overcomes a 244N friction force when traveling 29.6km/hr. The electric motor is powered by ten 12.0V batteries connected in series and is coupled directly to the wheels whose diameters are 49.0cm. The 281 armature coils are re..
A car moving at 8 m/s crashes into a barrier and stops in 0.050 s. There is a 17-kg child in the car. What is the impulse needed to stop the child
Establish the wave functions and the general expression
It leaves the track horizontally, flies through the air, and subsequently strikes the ground. Elucidate the speed v of the block when it leaves the track?
An observer, whose eyes are 1.92m above the ground, is standing 31 m away from a tree. The ground is level and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 21° above the horizontal. How t..
A 37-kg girl is bouncing on a trampoline. All through a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 215 J from 430 J. How high does she rise during this interval? Avoid air resistance.
a test charge of +3x10-7 C is located 5cm to the right of a charge of -4x10-6 C and 10 cm to the left of a charge of -1x10-6 C.the three charges lie on a straight line. find the force on the test charge
A diffraction grating with groove spacing of 2 microns is used to observe the balmer series in hydrogen, At what angle will the first order cyan line appear
A horizontal board weighing 232.0 Nis supported at points A and B in the figure below. The plankserves as a platform for a painter, who weighs 571.0 N. Find the maximum distance D, suchthat the plank will not tip, no matter where the painter stands.(..
A system gains 2850 J of heat at a constant pressure of 1.32 × 105 Pa, and its internal energy increases by 4100 J. What is the change in the volume of the system
A 24-V battery is connected in series with a resistor and an inductor, with R = 2.4 ? and L = 8.6 H, respectively. Find the energy stored in the inductor when the current reaches its maximum value
A transformer with a turns ratio (secondary/primary) of 1:15 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit
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