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If a particular metal surface is hit by a photon of 4.3eV, and electron is ejected with the maximum velocity of 563,050 m/s.
(a) What is the KE of this electron?
(b) What is the work function of the metal, give answer in eV?
The electric potential energy stored in the capacitor of a defibrillator is 58 J, What is the potential difference across the capacitor plates?
A hot air balloon is a bit like a bubble in water. It rises in air when the mass of relatively cool surrounding air displaced by the balloon is greater than the mass of the balloon and the gondola that hangs below it.
A 2.20 H coil with a resistance of 2.18×10^2 ohms is in series with a 1.29×10^3 ohms resistor. What is the peak value of the potential difference across the coil
A 0.25 kg block attached to a spring of spring constant 36.5 N/m is oscillating on a horizontal frictionless surface as shown. What is the amplitude of the motion of the block
What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign.
You have decided to make a large cooler to store meat. Calculate the net rate of heat flow per second out of the cooler if the interior temperature is 5 C and the exterior temperature can be 45 C
a piano turner hears one beat every 1.1 second when trying to adjust two strings, How far off in frequency is the other string
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
An ideal gas at 20 C consists of 2.2 X 10^{22} atoms. 4.3 J of thermal energy are removed from the gas. What the new temperature in C.
The mass of a robot is 5200 kg. This robot weighs 3750 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 107 m. What is the difference among MA - MB in the masses of these planets?
What is the force of air resistance. how high was the jump.
Water at 25 degrees celius is pumped from 100kPa to 5MPa in a pump with an efficiency of 75%, Calulate the temperature rise in the real pump
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