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A bat flying toward an obstacle at 9 m/s emits brief, high-frequency sound pulses at a repetition frequency of 83 Hz. What is the time interval between the echo pulses heard by the bat? in milliseconds
a ships anchor chain is wrapped around a hollow steel drum of mass m 500 kg and radius r 0.5m. the drum is located on
A massless string runs around two massless, frictionless pulleys. An object with mass m = 12.20 kg hangs from one pulley. A force F is exerted on the free end of the string. What is the magnitude of the force F if the object is lifted at the constant..
An electric field is established in a nonuniform rod. A voltmeter is used to measure the potential difference between the left end of the rod and a point a distance x from the left end. The process is repeated, and it is found that the data are descr..
The motor of a table saw is rotating 3450 rev/min. A pulley attached to the motor shaft drives a second puller of half the diameter by means of a V-belt. Compute the radial acceleration of points on the outer edge of the blade
Beginning with expressions for the reactance of a capacitor and an inductor, derive an expression for the resonant frequency
A sphere of radius 1.0 cm is dropped into a glass cylinder filledwith a viscous liquid. The mass of the sphere is 12.0 g and thedensity of the liquid is 1200 kg/m3. The sphere reaches a terminalspeed of 0.15 m/s. What is the viscosity of the liquid?
a scale is constructed using the 10 kg mass the 2 kg pan p and the pulley and cord arrangment. cord bca is 2m long. if
State the direction as an angle with respect to the +x axis.
A bag of cement of mass m is located on plank of length L. Find how much must the person nearest the bag support
A proton (rest mass 938.3 MeV/c^2) is confined to a small region of space 2.0 nm wide. What is the uncertainty on its speed due to this confinement
If the angular magnification of an astronomical telescope is 38 and the diameter of the objective is 66 mm, what is the minimum diameter of the eyepiece
A Carnot engine has a power output of 130 kW. The engine operates between two reservoirs at 20°C and 500°C, How much energy does it take in per hour
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