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A 3.0 cm wire carrying a current of 10 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27 T. What is the magnetic force on the wire?
At this time it has reached a height of 420 metres above launch pad and attained an upward velocity of 50 ms-1. From this time on, the rocket has constant upward acceleration -10 ms-2 (due to the effect of gravity alone).
a 1000-hz tone from a loudspeaker has an intensity level of 101db at a distance of 2.5 mif the speaker is assumed to be
how many joules of potential energy does 1.5-kg book gain when it is elevated 2 m? when it is elevated 4 mlet g 10
Two balls collide in a head on, completely elastic collision. Ball #1 is .50 kg and is traveling with a speed of 4.3m/s in the positive x direction. What will the speed and direction of each ball be after the collision
why is it far less dangerous to stand in front of an intense beam of red light than in front of a very low-intensity
A disc spins at 20 [rpm]. Calculate the period of rotation (which is the time interval required for 1 revolution)
An object is placed 55.5 cm from a screen. Where should a converging lens of focal length 8.0 cm be placed to form an image on the screen, Find the magnification of the lens
A rocket is launched at an angle of 58.0�° above the horizontal with an initial speed of 102 m/s. Find the maximum altitude reached by the rocket
An electron with kinetic energy 2.10 keV circles in a plane perpendicular to a uniform magnetic field. Find the frequency of circling
A physics student wants to build a spring gun that when aimed horizontally will give a 30.0- g ball an initial acceleration of 'g' by releasing a spring that has been compressed 14.0 cm. What spring constant is necessary? What is the velocity of the ..
A laser is used in eye surgery to weld a detached retina back into place. The wavelength of the laser beam is 511 nm, while the power is 1.5 W. how many photons are emitted by the laser
You are a professional frontier re-enactor who specializes in making lead shot. How much energy is required to cool a single droplet of molten lead all the way down to 0 C
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