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The acceleration of a certain simple harmonic oscillator is given by a = -(15.8 m/s2) cos (2.51t). What is the amplitude of the simple harmonic motion?
If a fish is attached to a vertical spring and slowly lowered to its equilibrium position, it is found to stretch the spring by an amount d. If the same fish is attached to the end of the unstretche
The distance between the first and the fifth minimum on a screen 62 cm behind the slits is 6.1 mm. What is the wavelength (in {rm nm}) of the light used in this experiment?
The speed of sound is 343 m/s. What is the separation between two seats, located on opposite sides of the center of the row, at which the tone cannot be heard?
A particle of mass 78 g and charge 71 μC is released from rest when it is 42 cm from a second particle of charge -12 μC. Determine the magnitude of the initial acceleration of the 78 g partic
The maximum speed of a 3.1kg mass attached to a string is .68 m/s and the maximum force exerted on the mass is 11N. What is the amplitude of motion for the mass? What is the force constant on the s
While attempting to tune the note C at 532 Hz, a piano tuner hears 5 beats/s between a reference oscillator and the string. (a) What are the possible frequencies of the string?
Automobile engine slows down from 4500rpm to 1200rpm in 2.5 s. Calculate (a) its angular acceleration, assumed constant, and (b) the total number of revolutions the engine makes in this time.
What are the components of vector in the xy plane if its direction is 252 counterclockwise from positive x axis and its magnitude is 7.34 units?
The charge was always found to be a small multiple of 1.6e-19 C. Find the charge on an oil drop weighing 1.84 10-14 N and suspended in a downward field of magnitude 2.88 104 N/C.
During the acceleration, the hoisting cable applies a force of 9300 N. What does the scale read during the acceleration?
A particle with a charge of 4.22 10-6C is placed between two parallel plates and feels a force of 1.61 10-4N. What is the strength of the field between the two plates?
For this wave determine (a) the wavelength (b) the frequency (c) velocity (magnitude and direction) (d) amplitude and (e) maximum and minimum speeds of particles of the cord.
A 1.80 102 kg crate is being pushed across a horizontal floor by a force vector P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.350. What should be
A car travels east at 91 km/h for 0.7 h. It then travels 30.0° east of north at 107 km/h for 0.6 h. What is the average velocity for the trip?
A 0.35 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the leng
Using a value of 343 m/s for the speed of sound, determine the maximum distance between the television viewer and the celebrity.
The police officer, knowing that the coefficient of kinetic friction between the tires and the road is 0.4, calculates the speed of the Toyota at impact. What was that speed?"
A 5 Kg block is on a 9 Kg triangular wedge. All surfaces are frictionless and both object start from rest. The block starts at the top of the wedge at 1.2 m. Find the final speeds of a block and the
Why does the magnetic field need to be changing? Why can't a very strong but constant magnetic field charge the capacitor?
A hot air balloon has a mass of 3400kg and two 75kg passengers. It is currrently decending at 4m/s. Draw a free body diagram for the hot air balloon. When the burner is turned on what force is requi
The first-order bright fringe is a distance of 4.84 from the center of the central bright fringe. For what wavelength of light will the first-order dark fringe be observed at this same point on the
While a person is walking, his arms (with typical lengths 70cm measured from the shoulder joint) swing through approximately a 45deg angle in 0.5sec. As a reasonable approximation, we can assume tha
What is the speed of a wave in a particular medium that has a frequency of 445 MHz and a wavelength of 67 cm?
Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. What was the initial distance from the shuttle to the astronaut?