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When you press one of the buttons on a small calculator, a 3.5 v battery provides a small constant current of 60μA for 300 ms. Calculate the following:
A) Calculate how many electrons N flow in that time:
B) Calculate the electrical potential energy U produced by the battery. (in μJ)
For sound waves in air with frequency 1000 Hz, a displacement amplitude of 1.2 X 10^-8 produces a pressure amplitude of 3.0 X 10^-2 Use v_sound = 344. For 1000-Hz waves in air, what displacement amplitude would be needed for the pressure amplitude..
Two runners start simultaneously from the same point on a circular 200-m track and run in the same direction. How far from the starting point will each have run at that instant
if 3.25 x 10-3 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.78 hours what
if the velocity of a 5.0 kg object tied to a string is constant at 30 ms when traveling in a vertical circle having a
a vertical spring ignore its mass whose spring stiffness constant is 820 nm is attached to a table and is compressed
In a double-slit experiment, slits separated by 1.240e-4 m are illuminated by a coherent 571 nm light source. What is the angular position of the first bright fringe
For the situation, the magnetic field changes with time according to the expression B = (2.00t3 - 4.00t2 + 0.800)T, and r2 = 2R = 5.00 cm. (a) Calculate the magnitude and direction of the force exerted on an electron located at point P2 when t = 2.00..
A parallel-plate capacitor is charged to a potential difference of 12 V. The area on each plate is 20 cm2 andthe spacing between plates is 0.15 mm. Find thef ollowing: the electric field between the two plates. the total charge on each plate.
A bowling ball with a diameter of 21.9cm is rolling down a level alley surface at 12.1m/s without slipping. how far up the incline will it travel before it stops
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle, as measured in the laboratory
A cart with mass 380 g moving on a frictionless linear air track at an initial speed of 0.9 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction ..
a simple harmonic oscillator of amplitude a has a total energy e. a determine the kinetic energy when the position is
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