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Two identical piano wires have a fundamental frequency of 699 Hertz when kept under the same tension. Find what fractional increase in the tension of one wire will lead to the occurrence of 7 beats per second when both wires oscillate simultaneously?
Two capacitors (2,0 uF and 4,0 uF) are connected in series across 300-V potential difference. Calculate the total stored energy in the system
What is the sufficient condition for a vector field to be conservative? What is a conservative vector field? What are Gaussian Surfaces and why are they important?
A horse is pulling a buggy. the total force by the horse is 475N applied horizontally. What is the force of friction on the driver and buggy
A skier slides horizontally along the snow for a distance of 25 m before coming to rest. how fast was the skier going
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you find in part (a). Illustrate what should be the maximum speed of the car so it can round the curve safely?
A bullet is fired from ground level with a speed of 150 m/s at an angle of 30 degrees above the horizontal. What is the velocity of the bullet while it is at the highest point of its trajectory.
A barefoot field-goal kicker imparts a speed of 37 meter per second to a football initially at rest. find the force exerted by the ball on the kicker foot
basketball star covers 2.85 m horizontally in a jump to dunk the ball. His motion through space can be modeled precisely as that of a particle at his center of mass. Determine his takeoff angle
the wavelength of one sound wave is 0.81 m. the wavelength of a second sound wave is a little bit longer. when the two
Two capacitors are connected parallel to each other and connected to the battery with voltage 30V. By how much energy of the system decreases
An electron is in circular motion of a diameter 20 microns and speed 2 x 104 meter per second while in a magnetic field. Determine strength of this magnetic field
The maximum strain of a steel wire with Young's modulus 2.0 x 10^11 N/m^2, just before breaking, is 0.20%. What is the stress at its breaking point
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