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The transverse displacement of a particular wave on a string is given by: D(x,t) = 0.3 cos(1.57x ? 7.85t) where D and x are in meters, and t is in seconds. For this wave, find its:
a) Wavenumber
b) Wavelength
c) Angular frequency
d) Frequency
e) Period
f) Amplitude
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. How far apart are the two cruisers
The spring potential energy is given by U = 1/2 kx^2. What is the kinetic energy when the spring reaches equilibrium
Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 9.97 cubic meter of water in kg
On a level road with its brakes on, a car traveling at 93km/hr stops within 92m when the brakes lock and the car slides.
A 30.0 kg solid uniform cube with 0.700 m sidesrests on a level surface. What is the minimum amount of work(Joules) necessary to put the cube into an unstable equilibrium position
A parallel-plate capacitor with circular plates of radius 0.20 m is being discharged. At what rate is the electric field between the plates changing
A 20. -kg lead sphere is hanging from a hook by a thin wire3.5m long, and is free to swing in a complete cirle. What must be the minimum intial speed of the dart
Find out the lengths of acceleration and deceleration phases
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.250uC on each plate. The plates are 0.600mm apart. What is the surface charge density on each plate
An AC power generator produces51A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, What percentage of the power delivered by the generator
The displacement vectors 47.0 cm at 15.0° and 23.0 cm at 60.0° both start from the origin and form two sides of a parallelogram. Find the area of the paralleogram
One icy day, my brother Nate decides to load boxes into his commissary truck by sliding them up a ramp into the back of his truck, find the minimum velocity necessary such that when the box comes to rest it will stay at rest
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