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Light traveling in air enters a material at an angle of 25 degrees with respect to the normal. The refracted beam in the material makes an angle of 18 degrees with respect to the normal. Calculate the index of refraction of the material.
A real 90 v battery (one with internal resistance) has a terminal voltage of 80 v when a motor with a resistance of 8 omega is connected to it. how large is the batterys internal resistance
In a head-on collision, the car stops in 0.279 from a speed of 16. The driver has a mass of 68, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second.
q.1. a particle leaves the origin with an initial velocity 6.67 ms and a constant acceleration - 2.48 - 4.29 ms2.
A small 13.0-g bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. What is the angular speed of the bar when the insect leaps off
The position of a 50 g oscillating mass is given by x(t) = (2.0 cm) cos(5t), where t is in seconds. Determine the following. (a) The amplitude. (b) The period. (c) The spring constant. (d) The maximum speed
There is an isolated point charge of q = +15 ?C. Using a test charge of q0 = +0.80 ?C, determine the E-field at point P which is 0.20 m away
A 1.4-m-diameter vat of liquid is 2.2m deep. The pressure at the bottom of the vat is 1.3atm. What is the mass of the liquid in the vat
What is an acceleration of the car
What is the effective spring constant (that is, the ratio of force to change in length) of a copper cable that is 7.0 in diameter and 13 long?
A tank of water 3.00m deep sits on a table 1.00 m tall. A hole is located 2.0m from the bottom of the tank. Water flows out of hole and strikes the ground. Where does it strike the ground.
A 5.0 ? resistor is connected in series with another resistor and a 5.0 V battery. The current in the circuit is 0.70 A. Calculate the value of the unknown resistance
Light of wavelength 595.00 nm is incident normally on a diffraction grating, How many slits/mm are marked on the grating
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