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A 270 g ball at the end of a string is revolving uniformly in a horizontal circle of radius 0.51 m. The ball makes1.7 revolutions in one second.
What is the speed of the ball as itgoes around in the circle?
What is the centripetal acceleration?
What is the force needed to keep the ball moving inthe circle?
A long, straight wire carrying a current of 316 A is placed in a uniform magnetic field that has a magnitude of 7.42 × 10-3 T. Find a point in space where the net magnetic field is zero
In the figure below, two parallel-plate capacitors A and B are connected in parallel across a 600 V battery. Each plate has area 70.0 cm2; the plate separations are 3.30mm, Find the magnitude of the electric field within the dielectric of capacitor..
A guitar string is 90cm long and has a mass of 3.6g from the bridge to support post (L) is 60cm and the string is under the tension of 560. What are the frequencies of fundamental and first two overtones.
A steel cable is to support an elevator whose total (loaded) mass is not to exceed 3100 kg. calculate the diameter of cable required
A 7.0 g bullet is fired into a 1.5 kg ballistic pendulum. The bullet emerges from the block with a speed of 200 m/s, and the block rises to a max height of 12 cm. Find the initial speed of the bullet.
q1. the longest string a thick metal wire on a particular piano is 3.0 m long and has a tension of 300.0 n. it vibrates
At the surface of an electrically charged solid conducting sphere the electric field has a magnitude of 458 N/C and the electric potential is 164 V lower than it is infinitely far from the sphere
A football punter accelerates a football from rest to a speed of 7 m/s during the time in which his toe is in contact with the ball (about 0.16 s). what average force does the punter exert on the ball
An archer shoots an arrow at a 78.0 m distant target, the bull's-eye of which is at same height as the release height of the arrow. At what angle must the arrow be released to hit the bull's-eye if its initial speed is 38.0 m/s
Calculate the magnitude of the gravitational force exerted on a 611-kg satellite that is a distance of two earth radii from the center of the earth, What is the magnitude of the earth's acceleration
A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is 0.400 m long and has a mass of 3.00 g, What is the frequency of its fundamental mode of vibration
question1a current experiment demonstrated diffraction of phthalocyanine molecules 514.54 gmol. the molecules have a
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