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A tuning fork produces a steady 400 Hz tone. When this tuning fork is struck and held near a vibrating guitar string, 20 beats are counted in five seconds. What are the possible frequencies produced by the guitar string?
Suppose a simple pendulum is used to measure the acceleration due to gravity at various points on the Earth. find the corresponding variation in the period of the pendulum
A 1500 car traveling at 11 suddenly runs out of gas while approaching the valley shown in the figure. The alert driver immediately puts the car in neutral so that it will roll. What will be the car’s speed as it coasts into the gas station on the oth..
David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. How long will it take for Ciny to catch up to David
suppose we place a small explosive charge on one of the bumpers so that it would explode on contact, pushing the 2 cars apart. What will the value of the coefficient restitution have
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
An electron (mass=9.1*10^-31 kg) is bound in a finite 1D square well w/ a width of 1.0 nm and a depth of 0.30 eV. How many bound states are there? (Please provide steps and not just an answer).
A net force that is quadratically increasing in time is applied to an object. What is time dependence of the object's kinetic energy
A 77.0-? resistor is connected in series with a 32.0-µF capacitor and a source whose maximum voltage is 123 V, operating at 60.0 Hz. Find the capacitive reactance of the circuit
A 60.0 kg person running at an initial speed of 4.00 m/s jumps ontoa 120 kg cart initially at rest. determine the final velocity of the person and cart
an aluminum wire having a cross-sectional area of 3.00 multiplied by 10-6 m2 carries a current of 5.00 a. find the
Illustrate what is the magnitude of the apparent weight of a 70 astronaut 3600 from the center of the Earth's Moon in a space vehicle moving at constant velocity?
A proton moves in the xy-plane through a uniform magnetic field, B=2.00Tx. The proton's velocity is 4.00x10^4 m/s, at an angleof 40 degrees to the x-axis. What is the magnitude force onthe proton?
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