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A wire rests on the y axis and has 3 A of current flowing in the y direction. Compute the force (in i j k notation) on a 10 cm section of the wire if it sits in a magnetic field described by a) B= 0.28 T i, b) B = -0.68 T j, and c) B= -0.5 T i + 0.6 T k.
A spider hangs from a strand of silk whose radius is5.8x10-6 m. The density of the silk is 1100kg/m3. When the spider moves, waves travel along the strand of silk at a speed of 310 m/s. Determine the mass of the spider.
Photons with wavelength 670 nm are capable of producing photoelectrons from a particular substance. Determine the substance's work function and cutoff wavelength
Two trains, each having a speed of 28 km/h, are headed at each other on the similar straight track. A bird that can fly 56 km/h flies off the front of one train, when they are 66 km apart and heads directly for the other train. On reaching the other ..
What focal length objective lens is required for a 3 meter length telescope which uses a 4 Power eyepiece? Is the final image real
Three resistors, 21, 39, and 73 , are connected in series, determine the potential difference across the three resistors
A conical pendulum is formed by attaching a 0.90kg ball to a 1.0m -long string, What is the ball's angular velocity, in rpm
A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration = (5.80 m/s2) + (7.00 m/s2). At time t = 0, the velocity is (3.6 m/s). What are magnitude and angle of its velocity when it has been displaced by 12.6 m para..
The averageintensity of sunlight at the top of the earth's atmosphere is 1390W/m2. What is the maximum energy that a 25 m multiplied by 50 m solar panelcould collect in one hour in this sunlight?
The rotational speed of an auto mobile engine is increased at a constant rate from 1400 rev/min to 3100 rev/min in 16 s. Find its rotational acceleration in revolutions per minute-squared
a professional skiers initial acceleration on fresh snow is 90 of the acceleration expected on a frictionless inclined
A 1kg block is attached to a horizontal spring where k = 200N/m. The block is extended 5cm (.05m) from equilibrium andreleased at time = 0. What is the displacement as a function of time?
Consider a hollow spherical conductor with total charge +5e. The outer and inner radii are a and b, respectively. (a) Calculate the charge on the sphere's inner and outer surfaces if a charge of -3e is placed at the center of the sphere. (Use the ..
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