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Assume the light bulb in Figure 22.4b is replaced by a6.0Ω electric heater that consumes 15 W of power. The conducting bar moves to the right at a constant speed, the field strength is 2.4 T, and the length of the bar between the rails is1.2m.
1. How fast is the bar moving?
2. What force should be applied to the bar to keep it moving to the right at the constant speed found in part (a)?
Two 29.0%u2212cm -focal-length converging lenses are placed 14.0cm apart. An object is placed 39.0cm in front of one lens. Where will the final image formed by the second lens be located
A projectile is launched at 45.0 degrees with the horizontal. Its initial speed is 250. m/s. what is the speed and direction of the object when it lands
As our bodies burn food as fuel, we radiate energy. Assume a person has a body surface area of 1.80 m2, What is the power radiated by the person
A spinning ice skater speeds up by pulling her hands to theside of her body. Approximate the ice skater by a cylinder ofradius 10cm and mass 30kg. what is her final angular velocity
After the Sun exhausts its nuclear fuel, its ultimate fate might be to collapse to a white dwarf state. In this state, it would have about the same mass as it has now, but its radius would be equal to the radius of the Earth.
A billiard ball moving at 6.00 m/s strikes a stationary ball of the same mass. find the struck ball's velocity after the collision
A yo-yo of mass 0.10kg and a radius of 0.03 m is released from rest, with the free end of the yo-yo string held fixed. Find the acceleration of the yo-yo
Two conductors made of the same material are connected across the same potential difference. Conductor A has twice the diameter and twice the length of conductor B. What is the ratio of the power delivered to A and to the power delivered to B?show yo..
An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 117 km and with a period of 51.0 h. Find the escape velocity from the asteroid
Its market researcher begins by examining the rental markets in the Southeast, the history of apartment buildings, local economies, competitive rents, and ownership all information that was on hand and did not require any new research to locate. T..
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50 . If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch?
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 2.15 ?C/m and are 6.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane ..
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