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Two sounds have intensities of 2.10×10-8 and 8.70×10-4 W/m2 respectively. What is the magnitude of the sound level difference between them in dB units?
The electric potential at a position located a distance of 18.6 mm from a positive point charge of 7.50×10-9C and 14.8 mm from a second point charge is 1.10 kV
Assume that the earth is a uniform density spherical mass. (This assumption is not correct but we will use it for simplicity in working the problem.)
the work being performed in this lab serves to solidify our understanding of how a magnetic field around a ring behaves
When a diver jumps into a lake, water leaks into the gap region between the diver's skin and her wetsuit, Estimate how much energy (in units of candy bars = 300 kcal) is required by this heating process
A block is at rest on a plank whose angle can be varied. The angle is gradually increased from 0 deg. find the kinetic coefficent of friction between the block and the plank
Ina mass spectrometer, ions are directed into a magnetic field, where they curve around in the field and strike a detector. If several singly ionized atoms travel at the equal speed through the magnetic field, would you expect them all to be defle..
A grindstone of radius 4 m is initially spinning with an angular speed of 8 rad/s. The angular speed is then increased to 10 rad/s over the next 4 seconds. Imagine that the angular acceleration is constant.
External work equal to 4x10-7 J is needed to move a -5 nC charge at constant speed to a point at which the potential is - 20 V. What is the potential at the initial point
A piece of copper wire joins a piece of aluminum wire whose diameter is twice that of the copper. The same current flows in both wires, Compare the drift speeds in each
Suppose that while moving into an apartment you move a refrigerator into place by sliding it across the floor. What is the least force you could exert on the refrigerator to move it
At an intersection of hospital hallways, a convex mirror is mounted high on a wall to help people avoid collisions. Using a scales 3-ray diagram, locate and describe the image of a patient 10.0 m from the mirror.
A mass-spring system oscillates with an amplitude of 3.40 cm. If the spring constant is 248 N/m and the mass is 421 g, Determine the maximum speed of the object
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