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The rest energy of a particle is 1 MeV. When it travels at a speed of v with respect to an observer, the kinetic energy is measured to be 0.6 MeV. Find the velocity v of the particle.
The amount of radiant power produced by the sun is approximately 3.9 x 1026 W. Assuming the sun to be a perfect blackbody sphere with a radius of 6.96 x 108 m, find its surface temperature (in kelvi
What is the radiant energy absorbed per second by his head when it is covered with hair? The surface area of the hair (assumed to be flat) is 140 cm2 and its emissivity is 0.87.
As part of an exercise routine an 81.9 kg person climbs 40.4 m up a vertical rope. How many (food) Calories are expected in a single climb up the rope? The acceleration due to gravity is 9.8 m/s2 an
Cell biology, explain how facilitated diffusion presents similarities with enzymatic chemical reactions. qn2 how does the intensity of simple diffusion vary in relation to the concentration gradient
A winch pulls a car of mass 2000kg up a 20 degree incline at a speed of 3 m/s. What is the minimum power output of the winch? (minimum means ignore friction)
What was the net work W (in J) done on the rock during the period of time between these two instants?
What is the direction of current through the smaller loop compared to the direction of current in the larger loop? Is it in the same or the opposite direction?
Assuming no heat is lost to the surroundings and neglibible heat loss from the container. Determine the total change in entropy as a result of the mixing process.
A large wrecking ball is held in place by two light steel cables. if the tension TA in the horizontal cable is 600 N, what is: a.) the tension TB in the other side that makes an angle of 40o with the
What is the beat frequency heard when two organ pipes, each open at both ends, are sounded together if one pipe is 58 cm long and the other is 67 cm long? (The speed of sound is 340 m/s)
A slit 0.30 mm wide is illuminated by light of wavelength 426 nm. A diffraction pattern is seen on a screen 2.8 m from the slit. what is the linear distance on the screen between the first diffracti
A single slit illuminated with a 500 nm light gives a diffraction pattern on a far screen. the 5th minimum occures at 7 degrees from the central maximum. At what angle does the 18th minimum occur?
Monochromatic light of 630 nm wavelength is used. the same slit, illuminated by new monochromatic light source, produces a diffraction pattern with the second minimum at a 60 ° angle from the ce
Eastimate the local wavelength of this function at x=4.0cm by averaging the distance to adjacent crests on either side.
The probe passes over an atom that is .05 nm tall off the surface. By what factor does the tunneling current increase?
A very powerful vacuum cleaner has a hose 2.68 cm in diameter. With the end of the hose placed perpendicularly on the flat face of a brick, what is the weight of the heaviest brick that the cleaner
Starting from the satellite on the Earth's surface, what is the minimum energy input necessary to place this satellite in orbit? Ignore air resistance but include the effect of the planet's daily ro
A cannon fires a cannon ball at 954.4 m/s in a straight line that passes directly over an observer's head. If the observer hears the sound of the cannon fire 2.53 seconds after he sees the cannon ba
A Carnot engine whose cold reservior temperature is 262.09 in Celsius has a thermal efficiency of 15.88%. By how much should the temperature of the hot reservior be increased to raise the efficiency
Assume the axis of the soenoid is perpendicular to the page, and the wires and current wind counter clockwise into the page. Assume the current for the straight wire is out of the page?
A charge q1 = 5 nC is placed at x = 0 and another charge q2 = -2 nC is placed at x = 2 .0 m. Where should a third positive charge be placed on the x axis so that the net force on it is zero?
In unit vector notation, what is the magnetic field at a point on the axis of the solenoid? Assume the axis of the soenoid is perpendicular to the page, and the wires and current wind counter clockw
The work function for metallic sodium is 2.7eV. (a) At what distance beyond the surface of metallic sodium is the electronâ€TMs probability density 10% of what it is at the surface?