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A 2 kg mass, attached to a string, is on a frictionless surface and moves in a horizontal circle. The radius of the circle is 0.5 m. The string will break when the tension reaches 20 N. At what speed will the string break?
A brick is initially 10.56 cm high and an aluminum can is initially 10.57 cm high. By how much must their temperatures be raised in order for the brick
An electron enters a region where the electric field is uniform, directed vertically downward, and has a magnitude of 700 N/C. This region of uniform field is 1. 5 cm long and 0. 7 cm high. Find the magnitude of the vertical deflection of the elect..
A high-intensity desk lamp is rated at 75 W, but its bulb requires only 9 V. The lamp contains a transformer that converts 110 V household electricity. What is the resistance of the bulb when it is on
q1. an electric field of 8.60 x 107 vm is desired between two parallel plates each of area 35.0 cm2 and separated by
While taking photographs in Death Valley on a day when the temperature is 58.0°C, What current does he register there if the temperature is -88.0°C
a supersized 5g cockroach walks out along a 1m long uniform horizontal wood flagpole which is connected to the side of a building with a light weight cable and a very low friction bearing. how far can the bug walk out along the pole before the cabl..
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
A lens for a 35-mm camera has a focal length given by f = 54mm, What is the magnification of the image on the film
The thrust produced by a single jet engine, m = 6700 kg, creates a force of F = 67000 N. It takes the jet a distance of d = 0.8 km to take off. What is the take-off speed of the jet vt in m/s
A sound wave travels in air toward the surface of a freshwater lake and enters into the water. What is the wavelength in the water
a person has a near point of 40 cm and a far point of 2.0 m. when looking through lenses of focal length -2.0 m, what is the nearest an object can be to be seen clearly
The radius of the earth's orbit around the sun (assumed to be circular) is 1.50 x 10^8 km, and the earth travels around this orbit in 365 days. What is the radial acceleration of the Mercury
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