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Transverse waves on a string have wave speed v=8.00m/s, amplitude A=0.0700m, and wavelength λ=0.320m. The waves travel in the -x direction, and at t=0 thex=0 end of the string has its maximu
calculate the gravitational potential energy of the elevator in its initial position relative to the base of the shaft. the potential energy of the elevator in its highest position, relative to the ba
The block is connected by a light cord passing over a small frictionless pulley to a second hanging block of mass m2 = 3 kg as shown. If the system moves from x= 0 to x= 2m, calculate:
It the man in the above question expended 60 W of power in pushing the mower 6.0m, how much time is spent in pushing the mower this distance?
Drag race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static fri
Using quantum theories to study the hydrogen atom allows the prediction and experimental verification of many data about atoms such as He+ and Li2+.
A proton is moving at 2.00×105 m/s and begins to circle at a radius of 5.00e-3 m. What is the strength of the perpendicular magnetic field acting on the proton?
When the mass of 78g rises up the wedge a distance 82 cm and stays there, what is the speed of mass? answer in units of m/s.
For a diffraction horn loudspeaker, sound emerges through a rectangular opening. The opening of a diffraction horn has a width of 0.16 m.
When droplets of condensation form on the outside of a glass of ice water, it much be that in the air right next to the glass:
A circuit consists of a resistor and a capacitor in series with an ac source that supplies an rms voltage of 240 V. At the frequency of the source the reactance of the capacitor is 43.0 Ω. Th
A student slides a 1.75 kg textbook across a table, and it comes to rest after traveling 1.2 m. given that the coefficient of kinetic friction between the book and the table is 0.34, use the work k
You are driving down the highway late one night at 20 rm m/s when a deer steps onto the road 35 rm m in front of you. Your reaction time before stepping on the brakes is 0.50 rm s , and the maximum
Three equal point charges, each with charge 1.00 , are placed at the vertices of an equilateral triangle whose sides are of length 0.350 . What is the electric potential energy of the system? (Take
If the police car's acceleration is 1.80 , and 7.60 elapses after the police car is passed until it overtakes the speeder (assumed moving at constant speed), what was the speeder's speed?
A 9.60 kg mass suspended from a spring with spring constant, k =750 N/m, extends it to a total length of 0.510 m. Find the new total length of the spring when a 13.40 kg mass is suspended.
An electron librated from a hot filament cathode is attracted by an anode with a potential of 1200V positive with respect to the filament. calculate the speed of the electron when it strikes the an
Starting from rest, how long would a train take to roll freely along its track from San Francisco to Washington D.C which are separated by an arclength of s =3900 km and are connected by a straight
A 27 pound meteorite struck a car, leaving a dent 27 cm deep in the trunk. If the meteorite struck the car with a speed of 620 m/s, what was the magnitude of its deceleration, assuming it to be con
Downward at an angle of 53° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?
A 18.8 kg block is dragged over a rough, hor- izontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizon- tal. The block is displaced 10.8 m, and the coefficient of k
The friction between the block and the floor depends on velocity? Ffr(v) = mg(alpha+betav) where alpha,beta areconstants.
A laboratory projectile launcher ("spring cannon") is set at 0 degrees elevation and secures at a height of 1.25 meters above the floor.
We want both blocks to slide together across the table without slipping on each other. What is the largest acceleration that the system can be given in terms of μs and g?
A lightbulb emits a spherical wave. If the intensity of the emitted light is 1.2 W/m2 at a distance of 2.4 m from the bulb, what is the intensity at a distance of 4.9 m?