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Assuming the tire is launched without a push from its highest point, what is the frequency of the tire-swing-pendulum (unloaded)? How long is the rope?
A 0.49·kg mass vibrates according to the equation x = 0.45 cos (8.36t + 1.05), where x is in meters, and t is in seconds. (a) Determine the amplitude. (b) Determine the frequency.
A straight wire in a magnetic field experiences a force of 0.034 N when the current in the wire is 2.5 A. The current in the wire is changed, and the wire experiences a force of 0.042 N as a result.
How much work would it take to rotate a 10 cm diameter loop carrying 25 A of current with a normal vector oriented 30* from a 2.0 T magnetic field to where the normal vector was completely anti-para
Assume the long dimension of the cord is perpendicular to the vertical component of Earth's magnetic field at that instant. (a) What is the magnitude of the vertical component of Earth's field at this
A 77.5 kg man just before contact with the ground has a speed of 6.22 m/s. In a stiff-legged landing he comes to a halt in 2.08 ms. Calculate the average net force that acts on him during this time.
Determine the mass flow rate of the water through the turbine generator in kg/s
A future space station in orbit about the earth is being powered by an electromagnetic beam from the earth. The beam has a cross-sectional area of 135 m2 and transmits an average power of 1.20 &time
As expected, the predictions of Coulomb's law are well confirmed. You find that the forces are repulsive or attractive? and what is the magnitude of the force in terms of N?
Then, the ball begins to move with a velocity V0= 15.0 m/s. The kinetic coeffient between table and the slipping ball is 0.214. In order that the ball can roll without slipping with a speed V= 14.10
A cylinder-shaped carbon resistor is 8 em in length and its circular cross section has a diameter d = 1 mm. a) Determine the resistance R. b) To reduce its resistance by 40%, the carbon resistor co
The string is vibrating in its fundamental mode throughout this process. Find the number of oscillations it completes during the 3.5s interval.
A taut string has a length of 2.60m and is fixed at both ends. (a) Find the wavelength of the fundamental mode of vibration of the string (b) Can you find the frequency of this mode? Explain why or
A standing wave is described by the wave function Y = 6sin((pi/2)x)cos(100pi(t)) Where x and y are in meters and t is in seconds. From the graph, identify the wavelength of the wave and explain how
Calculate the speed of the electrons in the water. The speed of light in water is 2.25 X 10^8 m/s.
An ambulance moving at 42 m/s sounds its siren whose frequency is 450Hz. A car is moving in the same direction as the ambulance at 25 m/s. What frequency does a person in the car hear (a) as the amb
An electron accelerated from rest through a voltage of 490V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 18cm, what is the magnitude of the m
Assume that none of the alpha particles bounced back from the sheet, meaning that the alpha particles either were captured by the shielding or penetrated completely through the shielding. What perce
What is the peak voltage across the capacitor? The generator frequency is now changed so that the circuit is in resonance. What is that new (resonance) frequency?
If each pellet is in contact with the wall for 0.80 ms, what is the magnitude of the average force on the wall from each pellet during contact?
What is the charge of the capacitor 1.95 time constants after the circuit is closed? What is the charge after a long time?
Find the angle between the direction of motion of the second ball and the original direction of motion of the cue ball. Find the origional speed of the cue ball.
If R = 12 cm, M = 370 g, and m = 40 g (below), find the speed of the block after it has descended 50 cm starting from rest. Solve the problem using energy conservation principles. Repeat with R = 5.
What is the maximum speed of a truck that you are sure will be stopped by this road, even if the frictional force of the road surface is negligible?
A particle of mass m = 4.24×105 eV/c2 moves in a three-dimensional box with edge lengths L1=0.54 nm, L2=1.08 nm, and L3=1.08 nm. Find the energies of the ground state and the next 5 excited s