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By what factor would the tension in a violin string have to change to tune it from Baroque pitch of 415 Hz to the modern pitch of 440 Hz? (Assume that the material of the string and the weight per length of the string remain unchanged.) would the tension have to increase or decrease?
A jelly donut is dropped from a height of 1m above the big belly of a horizontal couch potato. How high did it rise on its first bounce
If a 20kg mass hangs from the right side of a massless bar 5 meters in length and a 5kg mass hangs from the left side of the bar
The of is accompanied by a ray of measured wavelength 2.48×10?2. What is the difference in energy between these two levels
A 6-kg bowling ball with a radius of 14 cm is spinning about a vertical axis (with its center of mass motionless) at an initial rate of 3 turns per second. What was the average torque that the friction interation applied to the bowling ball
at the instant the displacement of a 2.00 kg object relative to the origin is d 2.00 m 4.00 m - 3.00 m its velocity
A horizontal spring, with spring constant k, has a mass, m,attached to it and is vibrating horizontally on a friction less surface. Which one of the following statements is CORRECT?
A diver releases an air bubble of volume 2.9 cm3 from the depth of 18 m below the surface of a lake, where the temperature is 7.2°C. What is volume of the bubble when it reaches just below the surface of the lake, where the temperature is 22°C.
A cord is used to vertically lower an initially stationary block of mass M = 40 kg at a constant downward acceleration of g/3. Find the work done by the cord's force on the block
An unknown resistor is connected between the terminals of a 5.5 V battery. At what rate is energy now dissipated
Computes the price per kwh for a 12-volt automobile battery with a 50 amp-hour capacity that sells for $40. If its weight is 45-lb, what is the energy density in watt-hours per lb.
The angular momentum of the electron as it moves around the center of the circle is 1.40 × 10-25J•s.Find the radius of the circular path.
The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
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