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The radius of a typical human eardrum is about 4.0 mm. Find the energy per second received by the eardrum when it listens to sound that is (a) at the threshold of hearing and (b) at the threshold of pain. (The intensities for the threshold of hearing and pain are: 10^-12 W/m^2 and 1 W/m^2).
A 7.1kg rope hangs from the ceiling. What is the tension at the midpoint of the rope
A 1.50 multiplied by 103kg car starts from rest and accelerates uniformly to 18.50m/s in 13s. Assume that air resistance remains constant at 400N during this time.
An electron moves at right angles to a magnetic field of 0.18T. What is its speed if the force exerted on it is 9.1×1015 N
A rock is thrown vertically upward with a speed of 18.0m/s from the roof of a building that is 40.0mabove the ground. Assume free fall. What is the speed of the rock just before it strikes the ground
The position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t] . When t= .805s , what are the (a) velocity and (b) acceleration of the cart ?
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
Suppose you have a concave spherical mirror with a focallength of 10 cm. What is the radius of curvature of the mirror
Suppose you are a researcher doing such an experiment in a location where the earth's field is 50 ?T at a 60 ?angle below horizontal. What is the proper orientation of the coil
Can she meet the design goal with this method. If so; state what you can determine about the lengths of each segment. If not, explain.
A converging lens has a focal length of 100.0 cm. A 12.0-cm-tall object is located 124.0 cm in front of this lens. find Is the image real or virtual
Find out how far from the center of the earth this location is. The mass of the earth is 5.98x10^24 kg. The mass of the moon is 7.35x10^22kg. The mean distance between the moon and the earth is 3.85x10^8 m
Describe the various elements necessary for effective leadership within a coalition. How does this apply to your professional practice or life?
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