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A simple harmonic oscillator placed in a resisting medium, consists of a 100-g mass attached to a spring whose force constant is 10^{4} dyne/cm (1 dyne = 10^{-5} N). The mass is displace 3cm and released from rest. After oscillating for 10s, the maximum amplitude decreases to half the initial value. Compute (d) the damping parameter \beta, (e) the frequency v_{1} and (f) the decrement of the motion.
A closed box is filled with dry ice at a temperature of -94.2 oC, while the outside temperature is 21.0 oC. Find the thermal conductivity of the material from which the box is made
What benefits does one provide over the other and what pitfalls must the professional be aware of?
An electric motor rotating a workshop grinding wheel at a rate of 1.13 102 rev/min is switched off. How long does it take for the grinding wheel to stop
How much work must be done on the electron to move it to negative plate if it is initially positioned 2.86 mm from the positive plate.
You look directly overhead and see a plane exactly 1.2·km above the ground, flying faster than the speed of sound. Find the angle of the shock wave cone
A laser emits 1.30x1018 photons per second in a beam oflight that has a diameter of 2.00mm and a wavelength of514.5nm. evaluate the average electric field strength
Write down an expression for the mass of the nucleus
Consider an aircraft powered by a turbojet engine that has a pressure ratio of 12. The aircraft is stationary on the ground, held in position by its brakes. determine the force that must be applied on the brakes to hold the plane stationary
A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s, What magnitude impulse did the soccer player deliver to the ball
Knowing the temperature at the surface of the Earth to be 72 Find the temperature at the surface of Venus
An object at distance (s) from a concave mirror of focal length (f) produces a real image at distance(s*) from the mirror. Will the new image be real or virtual
An electric field of 1.42 kV/m and a magnetic field of 0.386 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed?
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