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A 0.96-m-long metal rod has a radius of 2.1 cm and a resistance of 6.3 · 10 ? 5 ?. What is the resistivity of the metal?
The basic concepts in optics.
A ball on the end of a string is revolved at a uniform rate ina vertical circle of a radius 72.0cm. calculate the tension in the string when the ball isat the top of its path
Pool players often pride themselves on their ability to impart a large speed on a pool ball. they have placed you in charge of determining the speed of the players\' break shots
The ultrasonic transducer used in medical ultrasoundimaging, is a very thin disk ( m =0.10g) driven back, What is the disk's maximum speed at this amplitude
A car of mass M = 1200 kg traveling at 45.0 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
A 3.6- cm-radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 255 rad/s2, How long is the plane
If the ball's speed just before impact is 100 m/s, what is the angular speed of the rod immediately after the collision.
What is linear charge density of the insulating shell
A cylindrical air tank has dimensions diameter = 0.2m and height 0.8m, Calculate the mass of air in the tank (kg) (have to use ideal gas law, molecular weight of air)
A person driving her car at 57km/h approaches an intersection just as the traffic light turns yellow. She knows that yellow light lasts only 2.0 s before turning to red, and she is 30m away from the near side of the intersection.
A 4.0-mF capacitor initially charged to 50 V and a 6.0-mF capacitor charged to 30 V are connected to each other with the positive plate of each connected to the negative plate of the other
A small steel ball bearing with a mass of 11g is on a short compressed spring. When aimed vertically and suddenly released, spring sends the bearing to a height of 1.21 m. compute the horizontal distance the ball would travel if the same spring we..
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