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How much potential energy is stored when a small object (q = +2.50 µC, mass 1.70 g) is moved from very far away to the center of the ring?
Two forces act on a 55 kg object. One force has magnitude 65 N directed 59° clockwise from the positive x-axis and the other has a magnitude 35 N at 32° clockwise from the positive y-axis. W
A beam of red light of wavelength 700 nm shines on a single slit of width 122um. The light falls on a screen 0.8 meters away. Sketch the resulting interference pattern, and show the separation betw
Two loudspeakers are separated by 1.00 meters and are excited in phase by a 1,200 Hz sine wave. At what points on a line between the speakers will there be constructive inerference? At what points w
A beam of red light of wavelength 700nm shines on a pair of narrow slits of separation 176um. The light falls on a screen 0.8 m away from the slits. calculate the separation between bright and dark
A roller coaster reaches the top of the steepest hill with a speed of 5.3 km/h. It then descends the hill, which is at an average angle of 43° and is 45.0 m long. What will its speed be when it
A magnetic force is exerted on a stationary electric charge in a uniform magnetic field. An electric charge moving parallel to a magnetic field experiences a magnetic force.
The package has a mass of 4.75 kg. The coefficient of static friction between the ramp and the package is 0.455.
A 70-kg bicyclist coasts down a hill that makes a 10degree angle with the horizontal at a speed of 10 m/s. (a) If the drag force is given by Fdrag = -bv, what is the drag coefficient b?
What is the strength of an electric field Ep that will balance the weight of an electron? Express your answer numerically in Newtons per Coulomb to three significant figures
Only two forces act on an object that is sitting on a flat horizontal surface. The mass of the object is 3.00 kg. Force one runs along the x-axis and the second force forms with the first force an a
A person rides on a 12-m-diameter Ferris wheel that rotates at the constant rate of 6.6 rpm. Calculate the magnitude and direction of the force that the seat exerts on a 54-kg person when he is at e
In this orientation, the magnetic moment of the rotor is directed opposite the magnetic field. The rotor then turns through one-half revolution. This process is repeated to cause the rotor to turn s
An electron enters a magnetic field of 0.64 T with a velocity perpendicular to the direction of the field. What is the value f ×10-10, where f is the frequency (in Hz) at which the electron tra
What is the precision you need to observe the natural line shape and the Doppler line shape of the transition? Please submit computer plots as well.
A rod 14.0 cm long is uniformly charged and has a total charge of 22.0 C. Determine (a) the magnitude and (b) the direction of the electric field along the axis of the rod at a point 36.0 cm from it
Plot a Lorentzian emission line centered at 10 GHz having a half width at half maximum corresponding to 225 MHz which is approximately the Doppler broadening at room temperature of rubidium transiti
A 0.145-kg baseball pitched at 37.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 50.5 m/s . If the contact time between bat and ball is 3.20×10?3 , calculate the a
What is the maximum speed achieved by the cyclist and what total distance does he travel between 0 and 6.0s?
Two particles move along an x axis. The position of particle 1 is given by x = 5.60t2 + 3.00t + 2.00 (in meters and seconds); the acceleration of particle 2 is given by a = -8.00t (in meters per seco
A 25 kg box is acted on by a 45 N horizontal force. If the box accelerates at a rate of .75 m/s2, what is the coefficient of kinetic friction between the box and the table?
The monitoring reveals that the thermal energy of the cube increases by 20 J. What is the increase in the thermal energy of the floor along which the cube slides?
(a) As the box is dragged through 1.00 m along the way, what is the work done by the collie's applied force and what is the increase in the thermal energy of the bed and floor?
Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter).
The heating coil of a hot-water heater has a resistance of 20 and operates at 210 V. If electrical energy costs $0.080/kWh, what does it cost to raise 240 kg of water in the tank from 15°C to 89