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The drill bit of a variable-speed electric drill has a constant angular acceleration of 3.15 rad/s2. The initial angular speed of the bit is 5.95 rad/s. After 5.31 s,
(a) what angle has the bit turned through and
(b) what is the bit's angular speed?
A bird stands on a dc electric transmission line carrying 2500 A, What is the potential difference between the bird's feet
In January from Indiana, Andromeda is high in the sky at 6pm local time. (Note that local time is about 40 minutes later than Eastern Standard Time, Where would Andromeda be at midnight local time
if a 2.5 kg ball puts 118 joules of energy in a spring with a 614 n/m constant, how far is the spring compressed.
An electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of time as E = 54 V/m × sin (6x106 Hz × t). What is the Poynting vector at this location for this wave as a function of time
As measured in Earth's frame of reference, two planets are 485,000 km apart. How fast is the ship traveling
An air-filled toroidal solenoid has a mean radius of 13.0 cm and a cross-sectional area of 5.80cm^2. How many turns does the winding have
If the kinetic energy of an electron is 910 eV, calculate its De Broglie wavelength. For this non-relativistic electron you must firs, calculate its velocity from the general kinetic energy equation
A 9.40kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 69.5kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
An electron has an initial velocity of 2.00 ? 106 m/s in a uniform 4.00 ? 105 N/C strength electric field, How far does the electron travel before coming to rest
A 0.39 m long and 0.39 m wide loop is moved at a constant velocity of 0.37 m/s into a perpendicular constant magnetic field of 0.69 T
Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, What is the density of the sun
Two rubber bands cause an object to accelerate with acceleration a. How many rubber bands are needed to cause an object with half the mass to accelerate five times as quickly
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