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A particle (m = 3.0 µg, q = 5.0 µC) moves in a uniform magnetic field given by (60j)mT. At t = 0 the velocity of the particle is equal to (30j - 40k) m/s. The subsequent path of the particle is:
a) circular with a 50cm radius
b) helicila with 6.3 cm pitch
c) circular with a period of 31 ms
d) helicial with 40cm radius
e) none of the above
The work function for copper is 4.70 eV. Find the cutoff wavelength for copper
In the school cafeteria, a trouble-making child blows a 10.0 g spitball through a 30.0 cm straw. what is the speed of the spitball as it leaves the straw
An air-hockey puck of mass m floats across the table essentially frictionless on a cushion of air. What is the final velocity of the heavier puck
Light is reflected from a transparent coffee table. When the angle of incidence is 63.3°, What is the index of refraction of the material of the table
An automatic rifle fires 50 gram bullets at aspeed of 900 m/s at a rate of 50 bullets per second. What is the average recoil force against the gun's mount
You are designing a small coil (called a search coil) to measure magnetic fields. It is to have a diameter of 3.80 cm, How many turns should the coil have
An object's temperature increases, and in so doing its radiation power increases by a factor of 2.00.find the ratio of the new temperature to the original temperature
An engine develops 490 N m of torque at 3750 rev/min. Find the power developed by the engine
a supply plane flies at 55ms and has a constant height of 250m towards a point directly above a victim where a crate is
ferromagnetism is caused by:
A projectile is fired such that its horizontal range is equal to 2.0 times its maximum height. Find the angle the projectile was fired at
A 1400 wrecking ball hangs from a 20 -long cable. The ball is pulled back until the cable makes an angle of 30.0 with the vertical. By how much has the gravitational potential energy of the ball changed?
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