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What is the electric field amplitude associated with the light from a red laser pointer? Assume Power=0.10mW with a wavelenght of 600 nm. (the asnwer has to be 30 N/C)
A point charge with charge q1 = 3.60e-6 is held stationary at the origin. A second point charge with charge q2 = -4.10e-6 moves from the point (0.150m , 0) to the point (0.270m , 0.290m ). How much
What fraction of the power radiated by the sun is intercepted by the planet Uranus? The radius of Mercury is 2.56 multiply.gif 107m, and its mean distance from the sun is 2.87multiply.gif 1012m. Assu
A beam of polarized light with an average intensity of 14.8W/m2 is sent through a polarizer. The transmission axis makes an angle of32°with respect to the direction of polarization. Determine the
A parallel-plate capacitor has an area of 5.50 cm2, and the plates are separated by 1.06 mm with air between them. It stores a charge of 314 pC. What is the potential difference across the plates of
(a) What is the angular frequency of the motion? (b) Using the position of the bob at its lowest point as the reference level, determine the total mechanical energy of the pendulum as it swings back
(a) What is the spring constant of the spring? (b) Find the angular frequency of the block's vibrations.
A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is 8.87 m long and has a radius of 0.462 cm. When the car just begins to move, the tension in the cab
(a) Find the magnitude of the magnetic force on the electron. (b) Repeat your calculation for a proton having the same velocity.
Monatomic molecules adsorbed on a surface are free to move on this surface and can be treated as a classical ideal two dimensional gas .At absolute temperature T. What is the heat capacity per mole
A 10 kg block is attached to two springs as shown and held with the springs streched at an angle. The springs constants k1=100 N/m and k2 300 N/m. what is the acceleration of the block (incomponent
A certain LCD projector contains a single thin lens. An object 23.5mm high is to be projected so that its image fills a screen1.87m high. The object-to-screen distance is3.05m. (a) Determine the foc
A piston (with mass M = 2.0 kg) in a car engine is in vertical simple harmonic motion with amplitude A = 5.0 cm. If the engine is running at 405.265452313 rad/s, (a) What is the maximum velocity (m/
A 70 kg object is being pulled up a slope of 35 degrees with the horizontal so that the rope is parallel to the slope. If the object is accelerating up the ramp at 0.6 m/s2 and the coefficient of ki
A person with a mass of 50 kg is holding on to a rope of 15 kg which is attached to the ceiling. Note that the person is in midair. Draw a free body diagram of the person and the rope. Clearly draw
You have book A (6 kg) which sits on top of book B (15 kg) which sits on top of a table (30 kg). a. Draw a free body diagram of each book and the table. Clearly label each force that you drew on each
A solid disc with radius R is is spinning. An object exerts a force F at the edge of the disc to slow down the disc. The disc slows down to rest in 6 seconds. How long would the disc take to stop if
A resistor is known to obey Ohms Law. When there is a current of 1.72 A in the resistor, it has a voltage drop across its terminals of 7.35V. If a voltage of 12V is applied across the ressistor, wha
Three long, straight electrical cables, running north and south, are tightly enclosed in an insulating sheath. One of the cables carries a 23.4Acurrent southward; the other two carry currents of 19
A magnetic field is oriented at an angle of 31° to the normal of a rectangular area 5.5 cm by 7.2 cm. If the magnetic flux through this surface has a magnitude of 4.5 multiply.gif 10-5 T &middo
a certain facility, one net count corresponds to an activity of 12.9 Bq in a sample; and the expected number, 816, of background counts is well known. a) If the maximum acceptable risk for making a
The acceptable risk for making a type-I error is 5% and that for a type-II error, 1%. a) What is the minimum significant net sample count?
The magnetic field due to a current pulse in a single long, straight axon (nerve fiber) is found to be 1.2 x 10^-10 T at a distance of 1.3mm = 0.0013m from the axon. How large is the current in the