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Blue light of frequency 6.0 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons?
A potential difference of 81 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the ce..
A ball thrown upward returns to the same level after 4s in the air. How long would that ball take to reach the same level
question1there is three vectors and another vector must be added to the following three vectors.a sketch a vector
Determine the magnitude when the force on the wire
Plane monochromatic waves with wavelength 550nm are incident normally on a plane transmission grating having 360slits/mm. Find the angle of deviation in the third order
Three capacitors having capacitances of 8.7%u03BCF , 8.7%u03BCF , and 4.1%u03BCF are connected in series across a 31-V potential difference. What is the total energy now stored in the capacitors
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
Kelli weighs 405 N, and she is sitting on the playground swing that hangs 0.43 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. suppose that air resistance is negligible.
When UV light of wavelength 245nm falls on a metal surface, What is the work function of the metal
q1. a 20 kg block is at rest on a horizontal floor. if you push horizontally on the 20 kg block with a force of 50 n it
A current of 10^-14 A is produced in a free-air chamber operating under saturation conditions. The sensitive volume, in which electronic equilibrium exists, contains 0.22g of air. What is the exposure rate .
One and one-half moles of an ideal monatomic gas expand adiabatically, performing 7910 J of work in the process. What is the change in temperature of the gas during this expansion
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