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(a) What are the period and speed of a person on a carousel if the person has an acceleration with a magnitude of 0.74 m/s2 when she is standing 3.7 m from the axis?
(b) What are her acceleration magnitude and speed if she then moves to a distance of 2 m from the carousel center and the carousel keeps rotating with the same period?
boral is a commercial shielding material consisting of approximately equal parts by weight of boron carbide b4c and
A 4-kg mass is connected by a light cord passing over a pulley to a 2-kg mass. The pulley rotates about a frictionless axle and has a mass of 3kg and radius .2-m. find the acceleartion of the two masses
A light bulb emits light uniformly in all directions. The averageemitted power is 150.0 W. At a distance of 7 m from the bulb,determine (a) the average intensity of the light,(b) the rms value of the electric field, and(c) the peak value of the elect..
The intensity of an electromagnetic wave is 8 × 107 W/m2. What is the amplitude of the magnetic field of this wave
You bike at 12.1 m/s directly away from your neighbor\'s trumpet sound and toward the sound of another neighbor\'s trombone, What frequency is the trombonist producing
A curve of radius 65 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve
A capacitor consists of square conducting 21cm on a side and 4.5mm apart, carrying +- 1.0 uC. Find the electric field between the plates
Two children setup a "telephone" by placing a long, slender aluminium (Y = 6.9 × 1010 N/m2) bar that has a length of 6.1-m between their two houses. To communicate, the child taps a coded message on one end. How long do the sound waves take to reach ..
In an X-ray scattering measurement the first order diffraction peak is observed at ? = 12.3°. At what angle is the second order peak observed
A rocket blast off and moves strait upward from the launch pad with a constant acceleration. What are the magnitude and direction of the rockets acceleration
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
A point charge 4.20 mu C is held fixed at the origin. A second point charge 1.60 mu C with mass of 2.80×10-4 kg is placed on the x axis, 0.280 {rm m} from the origin. The second point charge is free from rest. What is its speed when its distance f..
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