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A tight uniform string with a length of 1.80m is tied down at both ends and placed under a tension of 100N/m . When it vibrates in its third harmonic, the sound given off has a frequency of 75.0Hz. What is the mass of the string?
A helicopter is ascending perpendicularly with a speed of 5.02 {rm m/s}. At a height of 115 {rm m} above the Earth, a package is dropped from the window.
A cyclist uses 27,000 joules per minute (this is about 385 food Calories per hour) to cycle at a constant pedaling rate of 450 radians per minute along a flat road using a gear ratio of 4
A ray of light incident upon a mirror makes an angle of 42 with the mirror. What is an angle between the incident ray and the reflected ray.
A gun shoots bullets that leave the muzzle with a speed of 338 m/s. If a bullet is to hit a target 104-m away at the level of the muzzle, the gun should be aimed at a point above the goal.
You are driving a car with a speed of 25 m/s. You slam on your brakes for 1.50 seconds causing your car to decelerate at a constant rate of 4.50 m/s^2. What is your speed at the end of this time?
The wing of an airplane has an average cross-sectional area of 13 m2 and experiences a lift force of 84,000 N. What is the average difference in the air pressure
A car takes a sharp turn on a road. Which of the following provides the centripetal force on the car? The weight of the car, frictional force, tangential acceleration, or gravitational force?
Determine the new planets mass density to earth mass density
A 1.15-k? resistor and a 590-mH inductor are connected in series to a 1250-Hz generator with an rms voltage of 13.1V, What is the rms current in the circuit
A satellite has a mass of 6079 kg, What would be the true weight of the satellite if it were at rest on the planet's surface
A mass of 125g is suspended from a spring of a spring constant of 38N/m. When this mass is pulled down 3mm and set in oscillation, what is the period and frequency of the oscillation? How different would be both, the period and frequency, if the m..
Suppose you wish to fabricate a uniform wire out of 2.6 g of copper. If the wire is to have a resistance of R = 0.25 and if all of the copper is to be used, what must be the length of the wire in m and the diameter of the wire in mm.
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