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A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 325. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 84 dB. What sound intensity level would the crew member experience if he removed the protective earplugs?
Find out the tension in the two strings. string between m1 and m2 2 N string between m2 and the 3.00 kg mass
a 0.39 kg piece of putty is dropped from a height of 2.7 m above a flat surface. when it hits the surface the putty
a hot-air balloon is rising upward with a constant speed of 2.41 ms. when the balloon is 8.13 m above the ground the
Calculate the magnetic moments that are possible for the n=3 level of Hydrogen, making use of the quantization of angular momentum. You may neglect the existence of spin. Compare this with the Bohr prediction for n=3.
Two charges are positioned on the x axis. A charge of +4 ?C is located at x = 5 cm and a charge of +2 ?C is located at x = -5 cm. What is the direction of the electric field at the origin
A heat engine operating between 40oC and 380oC has an efficiency 60% of that of a Carnot engine operating between the same temperatures. at what rate does it exhaust heat
Two carts are involved in an inelastic collision. The dynamics cart A with mass 0.88 kg hits the collision cart B with mass 0.550 kg (initially at rest). What is the initial kinetic energy of the two carts
A particle of mass m strikes a wall at an angle θ with respect to the normal. The collision is inelastic with coefficient of restitution E. Find the rebound angle of the particle after collision with the wall.
A 90 kg gentleman standing on slippery grass is pulled by his two rather unruly children.Overlooking friction, compute Pop's resulting acceleration
A golf club strikes a 0.045-kg golf ball in order to launch it from the tee. find With what speed does the ball leave the club
The angle of elevation theta is increased slowly from the horizontal. Illustrate at what value of theta does the block begin to slide (in degrees)?
Light with a frequency of 5.3×1014 Hz is travelling through glass and strikes a glass/air interface as shown above. Angle X1 is 26.0o to the normal. What is the wavelength of this light in the glass
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