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lightbulbs in AC circuits "flicker" in intensity, though the flicking is too fast for your eyes to sense it. how many times a second does the bulb reach peak brightness
If this same monchromatic light where to strike the grating when it is immersed in carbon disulfide with a refractive index of 1.63, at what angle would the first order diffraction appear
Emilie's potter's wheel rotates with a constant 2.20rad/s2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.30s interval
A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. what must be the length of the aluminum rod so that the temperature at the junction is 50°C
When a guitar string is sounded along with a 440 Hz tuning fork, a beat frequency of 4 Hz is heard. compute the frequency of the string
Two vehicles are approaching an intersection. One is a 2300kg pickup traveling at 14.0m/s from east to west (the ?x- direction), What is the magnitude of the net momentum
An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T. What is the radius of the path of the alpha particle
Two particles are fixed along a straight line, separated by a distance 4.2 cm. The left one has a charge +3.0 nC and the right one has a charge of +7.0 nC. What is the location of the point
A microscope is used to examine a sample of bacteria that are spread on glass. determine the shortest distance between two bacteria
If 100,000 MHz radar waves are incident on a plane coated with a polymer whose index of refraction is n = 1.50, how thick would you make the coating
Let the angle of incidence be 70° and the transmitted region be diamond with n2 = 2.42
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 11 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
A photon, a packet of electromagnetic radiation, carries both energy and momentum. Consider a photon with a wavelength of 457 nm in vacuum. What is the momentum of the photon
A wave has an amplitude of 0.25 m, a frequency of 5 Hz and a wavespeed of 4 m/s.a. Write the displacement equation for the wave
A standard violin string is 32.8 cm long from the tuning peg to the bridge. When played open(without pressing a finger against the fingerboard), What is the speed of the wave on the string
A beam of white light is passed through a prism at an angle of 30o and separated into a spectrum. What is the index of refraction for each color
A glass flask whose volume is 1000cm3 at a temperature of 0.500?C is completely filled with mercury at the same temperature. compute the coefficient of volume expansion of the glass
A Bullet of mass 14g strikes a block of mass 1.2kg, which is at rest on a horizontal frictionless surface and is attached to a coil spring shown. Find the velocity of the block just after impact
A 1.00-kg glider attached to a spring with a force constant 9.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
Suppose a distant world with surface gravity of 5.28 m/s2 has an atmospheric pressure of 7.16 multiply.gif 104 Pa at the surface. Calculate the pressure at a depth of 10.0 m in the methane ocean
A window in a house is rectangular, with height 49 cm and width 29 cm. What is the force on the window
A thin, light wire is wrapped around the rim of a wheel, If the suspended object moves downward a distance of 3.40m in 1.86s, what is the mass of the wheel
A pipe has a narrow end compared to the other end. The area of the narrow section is one-half the area of the wide section. find the velocity of the water in the wider section
If the heat necessary to warm 545 g of water from a temperature of T1 = 25.0 °C to T2 = 81.0 °C, what would be the speed of water
A hypodermic needle is attached to a syringe with a plunger of diameter 1.6 cm. What is the minimum force must be applied to the plunger