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Q1. A dielectric-filled parallel-plate capacitor has plate area = 40.0cm^2, plate separation = 5.00mm and dielectric constant = 6.00. The capacitor is connected to a battery that creates a constant voltage = 10.0 V. all through the problem, use = 8.851016 .The dielectric plates is now slowly pulled out of the capacitor that remains connected to the battery. The dielectric plate is now slowly pulled out of the capacitor that remains connected to the battery. Find the energy of the capacitor at the moment when the capacitor is half-filled with the dielectric.
Q2. The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all directions.
What is electric field strength of the microwave signal received back at airport 170mu.seconds later?
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
A flat coil enclosing an area of 0.10 m2 is rotating at 65 rev/s, what is the maximum voltage induced in the coil
A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA. If the beam is directed perpendicular to a flat surface, how many alpha particles strike the surface i..
During a Carnot cycle, in the first process, an ideal gas is expanded isothermally at 500 K. 1,000 J of heat enters the system, What is the magnitude of Q that leaves the system
If the magnitude of vector A is 10.0 m and that of vector B is 12.5 m, what is the range of values allowed for the magnitude of the sum of A and B?
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that the bushel contains abou..
A planet can have an atmosphere if the escape speed of the planet is 6 times larger than the thermal speed of molecules in the atmosphere. What is the radius of this object's orbit around the sun
A bird sits on a high-voltage power line with its feet 4.6 cm apart. What is the potential difference between the bird's feet
142.3 cm and not more than 142.6 cm. What is the relative uncertainty of the measurement
Two small metallic spheres, each of mass m = 0.25 g, are suspended as pendulums by light strings from a common point as, compute the magnitude of the charge on each sphere
The component of the external magnetic field along the central axis of a 69-turn coil of radius 23.0 cm decreases from 1.90 T to 0.400 T in 1.70 s. what is the magnitude of the induced current in the coil
Two spheres with masses m1 = 820 kg and m2 = 830 kg are separated by 0.230 m. What is the net gravitational force from them on a 3.0 kg sphere located 0.161 m from m1 and 0.069 m from m2? Use a + sign if the direction is towards m2 and a - sign if..
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