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The electron beam in a cathode-ray tube is accelerated via a potential difference of 250V. The electrons then pass via a small circular hole and are observed on the screen.
Calculate the amount of work done in drawing a mass of 20 kg at a uniform slow speed up a plane 2 m long, forming an angle of 30 degree with the horizontal when the coefficient of kinetic friction i
A beam of 0.61 nm photons experiences Compton scattering from free electrons. Determine the energy and momentum of the photons which emerge at a 45° angle with respect to the incident beam?
(i) Determine the tension in the rope. (ii) Determine the force which the column applies on the right end of the beam.
The brightest star in the sky is Sirius, which is in reality a pair of stars 8.6 light years from Earth, separated from each other by around 3.0 * 10^12 m. Determine what minimum telescope diameter
A lamp uses 440 W if operated at 110 V. (i) Determine the force per unit length among the 18 gauge (1.0 mm diameter) wires supplying current to the lamp when their center-to-center separation is 2.0
An electron is confined in an atom. Suppose that the atom consists of diameter 1 x 10-10 m and that this distance is the uncertainty in the position of electron. Find out the minimum uncertainty in t
A person walks into a room which includes, on opposite walls, two plane mirrors making multiple images. Determine the distances from the person to the first three images seen in the left-hand mirror
The hubble space telescope consists of a 2.4 m diameter mirror. i) What is the minimum angular resolution of the Hubble, by using 550-nm light?
Pay particular attention to the number of interference maxima visible in the central diffraction maximum and the width of the central diffraction maximum.
Take the diameter of the planet to be 19 m. Estimate (i) the free-fall acceleration on the surface of planet and (ii) the escape speed from the planet.
In a certain binary-star system, each star consists of the similar mass that is 1.1 times of that of the Sun, and they revolve around their center of mass. The distance among them is the 9.1 times t
When the oil slick generates a bright reflection of light having a wavelength of 500 nm, describe your reasoning for the key steps which let you to find out the maximum surface area covered by the s
What (i) x-coordinate and (ii) y-coordinate must particle D be positioned so that the total gravitational force on particle A from particles B, C, and D is zero (d = 18 cm)?
The light from a monochromatic source of 557 nm is incident on the surface of fused quartz (n = 1.56) at an angle of 52°. Determine the angle of reflection (in degrees) from the surface?
On your first trip to the Planet X you happen to take all along a 130 mass, a 40 cm long spring, a meter stick and a stopwatch. You are interested regarding the acceleration due to gravity on Planet
As the student pulls his arms inward, his angular speed rises to 3.48 rev/s. Determine how far are the masses from the axis of rotation at this time, considering the masses to be points?
You are riding in a boat whose speed relative to the water is around 6.1. The boat points at an angle of around 25 upstream on a river flowing at 1.4.
A flat surface having area 3.10 m2 is rotated in a uniform electric field of magnitude E = 6.90 x 105 N/C. Find out the electric flux via this area if the electric field is parallel to the surface.
You are standing on the north-pole of a big electro magnet having the south pole over your head. A beam of electrons is flying right at your face. When the magnetic field is strong adequate:
A series RLC circuit comprises of a 100 Ohm resistor, a 0.15 H inductor, and a 30 µF capacitor. The circuit is joined to a 120 V/60 Hz power line. What is (i) the peak current I, (ii) the phas
A) There is a constant magnetic field in the positive z direction. A positively charged particle is traveling in the positive z direction. The particle will be deflected towards the direction of
The two 10 cm diameter charged disks face one other, 23 cm apart. Both disks are charged to - 80 nC. Determine the electric field strength at the mid-point among the two disks? Find out the electric
An electron having kinetic energy 5.5 keV moves in the circular orbit perpendicular to a magnetic field of around 0.390 T. (i) Determine the radius of the orbit.
A source emits sound equally in all directions. There are no reflections of the sound. At a distance r1 from the source the sound is around 3.9 dB louder than it is at a distance r2 from the source