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A certain lightbulb is rated at 165 W when operating at an rms voltage of 1.5 V. What is the peak voltage applied across the bulb
A 2.30-g bullet embeds itself in a 1.40-kg block, which is attached to a spring of force constant 780N/m, Find the time for the bullet-block system to come to rest
A certain star is 14 million light years from Earth. The intensity of light that reaches earth from the star is 4X 10^ -21 w/m^2
The drawing shows a rectangular block of glass (n = 1.52) surrounded by a liquid with n = 1.73. At what angle does the ray leave the glass at point B
Methane (CH4) is burned with the 20% dry excess air at 227C. Combustion occurs at one atmosphere. Determine the adiabatic flame temperature (C)
You use a sequence of ideal polarizing filters, each with its axis making the same angle with the axis of the previous filter, What is the angle between adjacent polarizers
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
A 1 115.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 200.0 kg truck moving in the same direction at 20.000 m/s. What is the velocity
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 125 pm. What is the change in the electron's energy
An aircraft weighing 959 N is accelerated at 9 m/s/s for 11 seconds, How much work was done on the aircraft
A photon of wavelength 0.87671 nm strikes a free electron that is initially at rest. What is the speed of the recoil electron after the collision
In a hydraulic lift, the maximum gauge pressure is 18.7 atm. what is the heaviest vehicle that can be lifted
You have a mechanism by which you can use a magnetic spectrograph to chose the energy of the beta rays from a 137Cs source. What thickness of the brass foils in g/cm2 does it take to stop the 0.8 MeV
Two masses are attached to strings wound around a double pulley as shown. The double pulley has a total mass of 1200g (1.2kg), Calculate the angular acceleration of the double pulley
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
A balloon is filled with helium gas at 20.0 degrees Celsius at 1.0 atm (1 atm = 1.01 x 10^5 N/m^2). What is he heat flow into the gas
The magnetic field in a microwave traveling through vacuum has amplitude 4.00 X 10^-11T, Find the amplitude and frequency of the elctric field
Air that occupies 0.19 cubic meters at 1.03e+05 Pa gauge pressure is expanded isothermally to atmospheric pressure, Compute the work done by the air
A star is moving away from Earth at a speed of 2.4 X 10^8 m/s. find the wavelength as measure by an Earth observer
Unpolarized light is incident on a system of three polarizers. The second polarizer is oriented at an angle of 30 degrees with repect to the first, what is the intensity of the incident light
Your clock radio awakens you with a steady and irritating sound of frequency 600 Hz. One morning, it malfunctions and cannot be turned off. What is the frequency of this reflected sound
The electric field midway between two equal but opposite point charges is 730 N/C, What is the magnitude of the charge on each
Unpolarized light with an intensity of 650 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
A laser peripheral iridotomy is a procedure for treating an eye condition known as narrow-angle glacoma, How many photons does the laser deliver