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A water droplet of radius 0.015 mm remains hanging stationary in the air. If the electric field of Earth is 100 N/C, how many electrons must the water droplet lack? In which direction the electric field of Earth must be directed for that problem to make any sense at all?
Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.20 m and a positive point charge q2 at y2 = +0.38 m, Determine the magnitude of q2
A bug is on the edge of a rotating record player moving toward a light positioned along the edge of record player as well. Determine the accelerations acting on the bug
On a hot summer day (30 degrees Celsius), a pesky little mosquito produced its warning sound near your ear. What is the frequency in Hertz of the sound wave
A golf ball is shot from a tee, elevated 20.0 m above the green, what will be the speed of the golf ball just before it hits the green, 20.0 m below where it started
A 40 g rifle bullet travelling 260 m/s buries itself in a 4.0 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of pendulum's displacement.
A 0.520kg glider on an air track is attached to the end of an ideal spring with force constant 453N/m; it undergoes simple harmonic motion with an amplitude of 4.10×10?2m. Compute the maximum speed of the glider
Let x= the radius of earth's orbit=1 Au. and y = the radius of venu's orbit = 0.723 Au. and let d = the distance between venus and earth in AU. What are the largest and smallest values of d
A sound wave is traveling in seawater, where the adiabatic bulk modulus and density are 2.3 109 Pa and 1025 kg/m3, respectively. What would be the beat frequency heard by an underwater swimmer
The average power used by a stereo speaker is 56 W. Assuming that the speaker can be treated as a 7.7- resistance, find the peak value of the ac voltage applied to the speaker
830 J of heat is added to an ideal gas which is maintained at a constant temperature and a pressure of 1.0 atm. what is the final volume
Take the questionnaire of Psychology and Your Life. Are you more consistent with right or left brain orientation? How will your strengths help you with your future goals.
A wire with initial length L0 and radius r0 has measured resistance of 1.0 ohms. The wire is drawn under tensile stress to a new uniform radius of 0.25 r0. What is the new resistance of the wire
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