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(a) what is the wavelength of a 2.0 MHz ultrasound wave traveling through aluminum? (b) What is the frequency of electromagnetic wave have the same wavelength as the ultrasound wave of part a?
An astronaut must journey to a distant planet which is 210 light years from Earth. What speed will be necessary if the astronaut wishes to age only 13 years during the round trip? Assume that the tr
A wave travels along a string at a speed of 280 m/s. What will be the speed if the string is replaced by one made of the same material and under the same tension but having twice the radius?
A bartender slides a beer mug at 1.50m/s towards a customer at the end of a frictionless bar that is 1.20m tall. The customer makes a grab for the mug and misses and the mug sails off to the end of
Molecules conserve energy and mometum when they absorb photons. An H2 molecule at 250K absorbs a UV photon with a wavelength of 120nm. What is the change in H2's velocity?
For problem 1, illustrate (qualitatively) the electrical field and the equi-potential surfaces generated by this charge distribution.
Two point charges are on the y-axis. A 4.50μC charge is located at y= -1.80 cm. Find the total electric potential at (a) the origin and (b) the point having coordinates (1.50 cm, 0).
Calculate (a) the average velocity (in cm/s) during the time interval t = 2.00 s to t = 3.00 s; (b) the instantaneous velocity at t = 2.00 s; (c) the instantaneous velocity at t = 3.00 s; (d) the in
When an object is placed on the axis of the rod, 25. cm to the left of the left-hand end, the final image is formed 65.0 cm to the right of the right hand end. What is the length of the rod measured
An alpha particle (charge = 2e, mass = 6.64 x 10-27 kg) is now placed at (x, y) = (3.40, 3.40) fm. Calculate the electric potential energy associated with this configuration.
The potential difference between the accelerating plates of a TV set is about 25 kV. If the distance between the plates is 1.9 cm, find the magnitude of the uniform electric field in the region betw
A bird watcher meanders thru the woods, walking 0.50km due east, 0.75km due south, and 2.15km in a direction 35.0 degrees north of west.
A ball is thrown straight up. It rises to a height of 11 metres and then falls back and is caught. The ball was airborne for how long?
A circular conducting ring is split into two semi-circles. The top half has a positive charge (Q) evenly distributed, and the bottom half has a negative charge (-Q), also evenly distributed. In whic
A rubber ball is dropped from a height of 2.0m. After each bounce it returns to a height of 2/3 its starting height. (i) Determine the height the ball returns to after its third bounce.
A circular plastic disk with radius R = 2.79 cm has a uniformly distributed charge Q = +(4.69 x106)e on one face. A circular ring of width 32.6 µm is centered on that face, with the center of
A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 1.0 s after leaving the dock has a magnitude of 12.8 m. What is the car's speed a
A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.860 m/s at an angle of 33.6° above the table, and it lands on the magazine 0.079
An 82 kg man lowers himself to the ground from a height of 6.6 m by holding onto a rope that runs over a frictionless pulley to a 66 kg sandbag. With what speed does the man hit the ground if he sta
A mass of 0.30 kg, hanging from a spring with a spring constant of 86.8 N/m, is set into an up-and-down simple harmonic motion. What is the speed of the mass when moving through the equilibrium poin
A typical flute is about 66 cm long. A piccolo is very similar instrument, though it is similar, with a length of about 32 cm. How does the pitch of piccolo compare to that of a flute.
The ACE Towing company tows a disabled 10,500 N automobile off the road at a constant speed. If the tow line makes an angle of 10.0 degrees, what is the tension in the line supporting the car?
A long, nonconducting, solid cylinder of radius 3.8 cm has a nonuniform volume charge density ? that is a function of the radial distance r from the axis of the cylinder, as given by Ar2, with A =
A copper calorimeter can with mass 0.100kg contains 0.160kg of water and 0.018kg of ice in thermal equilibrium at atmospheric pressure.
If you wish to drop an egg on your professor's head, how far from the building should the professor be when you release the egg? Assume that the egg is in free fall.