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Light of wavelength 696 nm is incident on a single slit. The central bright fringe is 2.64 cm wide on a flat screen that is 94.8 cm from the slit. What would be the width of the central bright fring
Light of wavelength 679 nm is incident on a single slit. The central bright fringe is 2.75 cm wide on a flat screen that is 81.4 cm from the slit. What would be the width of the central bright frin
Suppose a toy oscillated with a frequency of 500 Hz and hence a period of 0.002s. If the toy moves past an observer at 0.9c, what is the frequency as measured by the observer?
The lens of a slide projector with a focal length of 100.0 mm projects a slide onto a screen that is 10.0 m away. How far from the lens must the slide be placed to form a sharp image on the screen?
A telescope consists of a mirror with radius of curvature 6.5 m and an eyepiece. If an astronomer would like the telescope to have a magnification of 114, what focal length eyepiece should he use?
Although all atoms have moving electric charges, not all materials are magnetic (for example, copper or wood are not magnetic). Why, then, aren't all materials magnetic?
Explain how the earth's geomagnetic field is created? Hint: be sure to include thedirection of the earth's current.
If a negatively charged particle enters a region of uniform magnetic field which is perpendicular to the particle's velocity, will the KE of the particle increase, decrease, orstay the same. Explain
What is the work done by the surroundings on the balloon? (Hint: Which way does the force of the surroundings act on the balloon? How does the force of the surroundings on the balloon compare to the
1) Suppose the gas inside a particular balloon has an absolute pressure of 3.10×105 Pa and occupies a volume of 5.97×10-3 m3 at a temperature of 10.5°C. How many moles of gas are insid
Suppose you have a sample of 3.46 moles of a certain type of molecule and the total mass is 87.9 g. What is the mass of a single molecule?
The rigid rotor can be used as a model for the rotational motion of a diatomic molecule. Describe the rotational spectrum that is predicted by the rigid rotor model. In what region of the electromag
The current flowing in a solenoid that is 23.9 cm long and has a radius of 2.20 cm and 530 turns decreases from 3.31 A to 1.19 A in 0.200 s. Determine the magnitude of the induced electric field ins
A 0.70 T magnetic field is applied to a paramagnetic gas whose atoms have an intrinsic magnetic dipole moment of 1.4 x 10-20 J/T. At what temperature will the mean kinetic energy of translation of th
A point charge moving in a magnetic field of 1.24 Tesla experiences a force of 0.813E-11 N. The velocity of the charge is perpendicular to the magnetic field The speed of the charge is 0.410E8 m/s.
A point moves in the plane so that its tangential acceleration w = a, and its normal acceleration wn = bt4, where a and b are positive constants, and t is time. At the moment t = 0 the point was at re
2) A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 40 dB by an observer 10 km away. (a) What is the average power generated by the horn?
How much less time has this person's watch registered in 35 y than the watch of someone who has stayed at home? Is it true that commuters live significantly longer or does it just seem longer?
A block-spring system oscillates with an amplitude of 3.40 cm. The spring constant is 250 N/m and the mass of the block is 0.800 kg. (a) Determine the mechanical energy of the system.
Find the ground state energy of an electron confined to a 1 D box of length 0.1 nm. Show an energy level diagram showing the first 5 levels. Calculate the wavelengths of the photons corresponding to
Two adjacent natural frequencies of an organ pipe are determined to be 525 Hz and 595 Hz. (Assume the speed of sound is 343 m/s.)
At one location on the Earth, the rms value of the magnetic field caused by solar radiation is 1.95 µT. (a) Calculate the rms electric field due to solar radiation. (b) Calculate the average ene
Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year. (The radius of Earth is 6.37 x 106 m.)
What is the magnitude of the force of the car on the truck? Express your answer to two significant figures and include the appropriate units.