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A tuning fork of frequency 1000 Hz is mounted 25 cm from the axis of a rotating horizontal table turning at a rate of 4 revolutions per second. What are the highest and lowest frequencies heard by a
A uniform rod (length L = 1 0 . m, mass = 2 0 . kg ) is suspended from a pivot a distance d = 0.25 m above its center of mass. The angular frequency in rad/s for small oscillations is approximately
The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.0 meter string is 308 N, and one-half wavelength occupies the wire, what is the mass of the wire in kg?
Spheres A and B are touched together and then separated. Spheres B and C are then touched and separated. Does sphere C end up with an excess or a deficiency of electrons and how many electrons is it
A rope hangs from a cylinder over which it is wound, of radius 0.20 m and mass 40.0 kg, and is attached to a hanging mass of weight 210.0 N. What torque does the hanging mass exert on the cylinder?
Suppose Earth and Mars are positioned such that Earth lies on a straight line between Mars and the Sun. Exactly 365.26 days later, when the Earth has completed one orbit, what is the angle between t
Determine the tangential acceleration of the car when it is halfway through the turn (i.e. 1/4 of a circle), assuming constant tangential acceleration.
A proton gun fires a proton from midway between two plates, A and B,which are separated by a distance of 10.0cm; the proton initially moves at a speed of 150 km/s toward plate B. Plate A is kept at
Suppose the average diameter of one of these sacs is 0.22 mm. An oxygen molecule (mass = 5.3 x 10-26 kg) trapped within a sac and the uncertainty in its position is 0.12 mm. What is the minimum uncer
If the distance between the pitcher's point of release and the catcher's glove is exactly 60.5 ft, how many full turns does the ball make between release and catch? Neglect any effect of gravity or
What would be the velocity of a shell fired from this loose cannon? (Hint: In both cases assume that the burning gunpowder imparts the same kinetic energy to the system.)
A uniform meter stick is placed on and parallel to the x axis, with the 50 cm mark at the origin. It is pivoted at the 50 cm mark. A 9.3 N force is applied at the 47 cm mark, and a (-5.6) N force is
When roads are icy, wet, or snowy, front-wheel drive cars (cars whose front wheels provide the force to accelerate the car forward) are generally more stable than rear-wheel drive cars (cars whose b
Why can these precautions help to prevent skidding in these conditions? For a car to maintain traction on the road, the static frictional force must be acting, not the kinetic frictional force.
At what distance x between Q1 and Q2 should a positively charged particle q be placed so that its net force is equal to zero,if Q1=8μC and Q2=4μC and they are 6 cm apart from each other?
A stone is thrown upward from the top of a 51.9-m high building with an upward velocity component of 18.2 m/s. How long does it take for the stone to hit the ground?
If he plane travels at a constant speed of 160 miles per hour for 10 seconds after landing before applying the brakes. what is the total displacement of the aircraft between touchdown on the runway
An elevator at rest begins to move upward with a constant acceleration. After 2 seconds it has a velocity of 5 m/s. Calculate the acceleration of the elevator.
When the capacitor is fully discharged, what is the temperature (in °C) of the gold cube?
Estimate the mean kinetic energy of the free electrons in a metal if they obeyed Maxwell-Boltzmann statistics. How does this compare with the result of applying Fermi-Dirac Statistics. Why is there
A baseball player of mass 90.8 kg running at 6.05 m/s slides into home plate. (a) What magnitude impulse is delivered to the player by friction?
If the player's fist is in contact with the ball for 0.060 0 s, find the magnitude of the average force exerted on the player's fist.
A 1.50 x 103 kg car starts from rest and accelerates uniformly to 18.6 m/s in 11.4 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by t
A ski jumper starts from rest 60.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 17.0 m above the ground. Negle