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The pulley has the shape of a uniform solid disk of mass 1.90 and diameter 0.600 . After the system is released, find the horizontal tension in the wire.
Two 7.0 k resistors are placed in series and connected to a battery. A voltmeter of sensitivity 1900 /V is on the 3.0 V scale and reads 2.0 V when placed across either of the resistors. What is the
Objects with masses of 200 kg and 500 kg are separated by 0.400 m. (a) Find the net gravitational force exerted by these objects on a 50.0 kg object placed midway between them. (b) At what position
If the screen is 148 cm from the double-slit, how far apart is this bright band from the central peak? What is the distance between the two slits?
A pail of water is rotated in a vertical circle of radius 1.00 m. (a) What two external forces act on the water in the pail. (b) Which of the two external forces is most important in causing the wat
Part 1) A grating with 545 slits/cm is illuminated with light of wavelength 437 nm. What is the highest-order number that can be observed with this grating?
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal ac
Using a grating with a spacing of 0.00059 cm, a line (which looks like red light) appears 18 cm from the central line on a screen. The screen is 1.6 m from the grating. What is the wavelength of th
The tires on a new compact car have a diameter of 2.0 ft and are warranted for 60,000 miles. (a) Determine the angle (in radians) through which one of these tires will rotate during the warranty per
Enforce the proper matching conditions at x=L to find an equation for the allowed energies of this system. Are there conditions for which no solution is possible?
The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 2.45 x 10-5 T. What is the acceleration of an electron due to this field comp
Two sound sources 3 m apart have the same frequency of 870 Hz. The sources emit energy in the form of spherical waves.
How much heat is absorbed by a persons hand if 100 grams of steam at 100°C is first converted to liquid water at 100°C and then cooled to normal body temperature.
A comet of mass 1.9 x 1010 kg moves in an elliptical orbit around the Sun. Its distance from the Sun ranges between 0.480 AU and 56.0 AU. At aphelion what is the potential energy of the comet-Sun syst
A very massive object traveling at 100 m/s in the -z direction strikes a very light object that is initially at rest. If the collision is totally elastic, what is the velocity of the heavier object?
An oil film with index of refraction 1.64 is trapped between two pieces of glass with index of refraction 1.43. No light is reflected by such a film when 583 nm light falls on it at normal incidence
A charging bull elephant with a mass of 5240 kg comes directly toward you with a speed of 4.55 m/s. You toss a 0.150 kg rubber ball at the elephant with a speed of 7.81 m/s.
Determine the velocity of the scattered electron using classical physics equations.
Consider a 5.28 gram sample of sodium iodide (NaI), of which .0160% of the iodine having a half life of 13 days. Take the atomic weights of Na and the remainder of the I to be 23.0 and the 126.9 am
To get the boat moving, you throw the stones rearward, either in succession or together, but in each case with a certain speed 18.000 m/s relative to the boat. a.) What is the resulting speed of the
A bungee jumper with mass 65 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point 8 more times in 34.7 seconds. He finally comes to rest 25 me
A wire of radius 1.3 mm carries a current of 1.9 A. The potential difference between points on the wire 42 m apart is 3.6 V. Part A. What are the electric field in the wire?
A 0.100-mA electron beam with kinetic energy 54.0 eV enters a sharply defined region of lower potential where the kinetic energy of the electrons is increased by 10.0 eV. What current is reflected a
Two parallel metal plates have area A = 255 cm2 and are separated by l = 0.50cm. They have a potential difference of 0.25 V. Find the numerical value of the electric field. What are the charge densi