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Assume that a 7.0-cm-diameter, 50 W light bulb radiates all its energy as a single wavelength of visible light.
A) Estimate the electric field strength at the surface of the bulb.
B) Estimate the magnetic field strength at the surface of the bulb.
Two identical 0.13 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, where x2 = 0.04 m.
A father racing his son has two-fifths the kinetic energy of the son, who has one-third the mass of the father. The father speeds up by 1.0 m/s, What is the original speed of the father
What is the number of conduction electrons. A centrifuge rotor has a moment of inertia of 3.40 x10-2 kg·m2. How much energy is required to bring it from rest to 8000 rpm.
A 3.6-kg object is supported by an aluminum wire of length 1.8m and diameter 1.7mm. How much will the wire stretch
During the collision with the ground, he comes to rest in a time of .101 s. The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. Elucidate from what height did the student f..
What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser, if = 0.300 ?
A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. What is the surface charge density on the red blood cell
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, What is the radius of the second coil
A bicycle tire pump has a piston with area 0.44 in. If a person exerts a force of 30lbs on the piston while inflating a tire, what pressure does this produce on the air in the pump.
A boy pulls on a wagon with a horizontal force of 75N. what is the average power generated by the child, in watts
Four kilomoles of a monatomic ideal gas are at a temperature of 300 K, Compute the heat supplied to maintain a constant temperature
A toy car is driven by a battery of 9V. it draws a current of 2mA. what is the resistance of the car
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