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How frequently are photoelectrons ejected in the experiment represented with the graph of Figure Ex38.4, in which the interval on the vertical axis is 2µA and each interval on the horizontal axis is 1 V?
A common flashlight bulb is rated at 0.300 A and 2.60 V, what is the temperature of the filament when the bulb is on? Calculate in deg Celsius
In figure (a), a 4.2 kg dog stands on a 15 kg flatboat at distance D = 6.1 m from the shore. It walks 2.1 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore.
At a distance r1 from a point charge, magnitude of the electric field created by the charge is 296 N/C. At a distance r2 from the charge, the field has a magnitude of 168 N/C. Find the ratior2/r1.
question a woman rides a bicycle for 1 hour and travels 15 kilometers. find the angular velocity of the wheel if the
A student pushes a loaded sled whose mass m is 240kg for a distance d of 2.3m over the frictionless surface of a forzen lake. if the sled starts from rest, what is its final velocity
Treat a Boron atom as 5 protons at the origin, 2 electrons spread uniformly on a shell (radius 13.2[pm] centered on the origin) , 2 more electrons spread on a shell (radius 105.8[pm] centered on the origin), and its outer electron at x= 211.6 pm.
Water is ejected from a garden hose of radius 1.07 cm at a speed of 4.57 m/s. Find the flow rate through the hose
A 45-m length of wire is stretched horizontally between twovertical posts. The wire carries a current of 76 A and experiences a magnetic force of 0.15 N.
A 5100 kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3, Find the buoyant force on the iceberg
A proton is traveling horizontally at 5.4 × 106 m/s south. A magnetic flux density has a magnitude of 0.25 T and is directed north. What is the force on the proton
the roller-coaster car is dragged up at the highest point where it is released passing the highest point with speed of
When ultraviolet light with a wavelength of 250 nm is incident on a particular metal surface, What is the threshold frequency for this particular metal
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