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(a) A charge -318e is uniformly distributed along a circular arc of radius 7.00 cm, which subtends an angle of 49o. What is the linear charge density along the arc?
(b) A charge -318e is uniformly distributed over one face of a circular disk of radius 3.10 cm. What is the surface charge density over that face?
(c) A charge -318e is uniformly distributed over the surface of a sphere of radius 5.00 cm. What is the surface charge density over that surface?
(d) A charge -318e is uniformly spread through the volume of a sphere of radius 2.70 cm. What is the volume charge density in that sphere?
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min . It then reverses and goes at 80 km/h for 20min . What is the average velocity for the entire trip? What is the average speed for the entire trip?
What are the magnitude and direction of the resultant vector R , when the parallelogram law is applied to A and B?
How far does the car go before it stops. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s.
A 1.2 kg mass attached to a spring oscillates with amplitude of 6.3 cm and a frequency of 1.1 Hz. What is its energy of motion.
A 70.0 kg circus performer slides 4.90m down a pole to the circus floor, starting from rest. What is the kinetic energy of the performer as she reaches the floor if the frictional force on her from the pole (a) is negligible (she will be hurt) and (b..
All distant galaxies are moving away from us. Describe why this does not imply that we are at the center of universe.
What must the banking angle of the curves be so that the force of the pavement on the tires of the car is in the normal direction.
Assume the freezer operates for 5 hours each day, how much power does it require while operating
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
An automobile club plans to race a 700kg car at the local racetrack. The car needs to be able to travel around several 155m radius curves at 87km/h.
A 59.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of the circle with a radius of 3.80 m.
A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway, How much time is needed for the plane to clear the intersection
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