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A long solenoid has 300 turns/cm and carries a current of 2.3 A; its diameter is 2.5 cm. At its center we place an 80-turn, close-packed coil of diameter 2 cm. This coil is arranged so that B at th center of the solenoid is parallel to its axis. The current in the solenoid is reduced to zero and then raised to 2.5 A in the other direction at a steady rate over a period of 0.005 s. What induced emf appears in the coil while the current is being changed?
q. a solid nonconducting sphere of radius r has a positive charge q distributed uniformly throughout its volume. since
Given that the nearest star is about 4 light years away, develop an estimate of the density of stars per cubic light year in our galaxy. estimate the number of stars in the milky way galaxy given that it's roughly a disk 100 000 light years across..
A camera has a lens w/ a 52 mm focal length and a sensor array that measures 4.82mm x 3.64 mm, how far away from the animal will you have to stand
An electron is accelerated through 2250 V from rest and then enters a region where there is a uniform 2.00 T magnetic field. What are the maximum and minimum magnitudes of the magnetic force acting on this electron
Suppose the speeder is traveling with a constant speed of 25m/s , and that the maximum acceleration of the police car is 3.1m/s2. find the maximum head-start distance the speeder can have
In the lungs there are tiny sacs of air that are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140mm. What is the minimum improbability in the velocity of this oxygen ..
a car at the indianapolis-500 accelerates uniformly from the pit area going from rest to 290 kmh in a semicircular arc
What is a density of the block
An electron is in the second energy level (n=2) of a Hydrogen atom. What is the maximum wavelength of light that it can absorb and be completely ionized
What is the frictional force
An astronomer on Earth observes a meteoroid in the southern sky approaching Earth at a speed of 0.830c. At the time of its discovery, the meteoroid is 23.0 light-years from Earth. Compute the following. The time required for the meteoroid to reach Ea..
A monatomic ideal gas at high temperature T in a discharge tube has a triply degenerate excited state at an energy e above the ground state, Find the ratio population of the excited state to that of the ground state
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