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An air-track glider attached to a spring oscillates between the 16.31 cm mark and the 51.41 cm mark on the track. What is the maximum speed of the glider
A 60 ohm resistor is connected in series with a 30x10^-6 capacitor and a generator having a maximum voltage of 120 volts, what is the phase angle of the circuit
A 103.29 cm-long steel string with a linear density of 2.56 g/m is under 240.31 N tension. What is the wavelength of the sound wave that reaches your ear in a 11.65oC room
You are standing 4.5m from a convex security mirror in a store. You estimate the height of your image to be half of your actual height. Estimate the radius of curvature of the mirror
Calculate the rest energy of an electron in joules and Calculate the rest energy of an electron in MeV (1MeV=1.60×10?13J)
In 6.00 days the number of radioactive nuclei decreases to one-eight the number present initially. What is the half-life (in days) of the material
A radio galaxy has an angular extent of 2°, and the associated optical galaxy has its spectral lines redshifted by 15% of their rest wavelength
An airplane has an effective wing surface area of 15 m2 that is generating the lift force. What is the weight of the plane
A 10.39-m ladder with a mass of 24.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 264 N. What is the net torque acting on the ladde
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, what is the speed of second spaceship
What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 17km and 49km from the source, what is the ratio of the amplitudes
A space ship travelling at speed 0.5c toward the earth ejects a spacepod travelling in a forward direction at a speed of 0.25c, what is the speed of light signal relative to the spaceship in term of c
A noisy grinding machine in a factory produces a sound intensity of 1.40 multiply.gif 10-3 W/m2. Calculate the decibel level of this machine
A 340kg wooden raft floats on a lake. When a 65kg man stands on the raft, it sinks 3.0cm deeper into the water. When he steps off, What is the total energy of vibration
List all the possible set of quantum numbers for a hydrogen atom with n=3. What is the electrons total energy
A performer, seated on a trapeze, is swinging back and forth with a period of 9.95 s. what will be the new period of the system
Suppose that a simple pendulum consists of a small 58.0 g bob at the end of a cord of negligible mass. What is the pendulum's length
a 10,000kg open rail car rolls under a hopper at 1m/s. the hopper dispenses grain into the moving rail car, how much grain was loaded into the car
A light ray initially in water enters a transparent substance at an angle of incidence of 39.0°, Calculate the speed of light in the transparent substance
Show that the SI units for Planck's constant (h) are equal to the SI units of angular momentum. Calculate the magnitude of the Bohr radius
A hot iron horseshoe (mass = 0.50kg ), just forged, is dropped into 1.50L of water in a 0.30kg iron pot initially at 25.0?C. estimate the initial temperature of the hot horseshoe
An object is located to the left of a convex lens whose focal length = +40cm. The magnification produced by the lens = 3.0 m. Calculate the distance through which the object must be moved
A converging lens with a focal length f1 = 4cm is placed to the left of a second identical lens f2. What is the separation distance between the two lenses
A lens produces a magnification of -1.8 when an object is placed 2.5 cm from the lens. compute the focal length of the lens?
The double slit experiment explains wave interference. Describe a particular innovation in a specific field