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A flat surface having an area of 3.2 m2 is rotated in a uniform electric field of magnitude E = 6.2 x 105 N/C. Determine the electric flux through this area in the following situations:
What is the lowest frequency of the sources that can account for that observation?Answer in units of Hz. What is the next higher frequency of the sources that can account for that observation?Answer
A tennis player hits a ball 2.0 {\rm m} above the ground. The ball leaves his racquet with a speed of 22.0 m/s at an angle 4.9^\circ above the horizontal. The horizontal distance to the net is 7.0 {
A cannonball that was accidentally dropped hits the moat below in 1.6 s. a) How far from the castle wall does the cannonball hit the ground?
The astronaut is strapped into a seat 4.20 m from the axis. a) What is the astronaut's tangential acceleration during the first 40.0 s?
A crankshaft with a diameter of 3.0 \rm cm, rotating at 2600 rpm comes to a halt in 1.40 s.What is the tangential acceleration of a point on the surface of the crankshaft?
A car starts from rest on a curve with a radius of 110 m and accelerates at 0.900 m/s^2. How many revolutions will the car have gone through when the magnitude of its total acceleration is 3.50 m/s^
A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it hits the floor, assuming that the end on the floor does not slip. (Hin
Use 344 for the speed of sound in air and assume that the source and listener are both far enough from the doorway for Fraunhofer diffraction to apply. You can ignore effects of reflections.
A 90-nm-thick coating is applied to the lens. What must be the coating's index of refraction to be most effective at 480 ? Assume that the coating's index of refraction is less than that of the lens
What is the minimum coating thickness that will minimize the reflection at the wavelength of 704 where solar cells are most efficient? Solar cells are given antireflection coatings to maximize their
Looking straight downward into a rain puddle whose surface is covered with a thin film of gasoline, you notice a swirling pattern of colors caused by interference inside the gasoline film.
A block is on a horizontal surface (a shake table) that is moving back and forth horizontally with simple harmonic motion of frequency 1.28 Hz. The coefficient of static friction between block and s
Suppose the insulating qualities of the wall of a house come mainly from a 4.0 inch layer of brick and an R-19 layer of insulation. What is the total rate of heat loss through such a wall, if its to
A 15-μF capacitor and a 30-μF capacitor are connected in series, and charged to a potential difference of 50 V. What is the resulting charge on the 30-μF capacitor?
The coefficient of static friction between block and surface is 0.662. How great can the amplitude of the SHM be if the block is not to slip along the surface?
Would the rank be from the inner most surface to outer because of the density of the field lines relating to magnitude?
The notes are all of fundamental frequencies. To play a note of frequency 575 Hz, how far down the string must one place a finger?
Hence calculate (i) the efficiency and power output of the engine, (ii) the power in the cooling water and (iii) the overall efficiency of the system.
In a television set, electrons are accelerated from rest through a potential difference of 15 kV. The electrons then pass through a 0.37-T magnetic field that deflects them to the appropriate spot o
A solid plastic sphere of radius 10.0 cm has charge with uniform density throughout its volume. The electric field 9.00 cm from the center is 75.0 kN/C radially inward. Find the magnitude of the ele
The altitude of a hang glider is increasing at a rate of 6.80m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5 m/s when the sun is directly overhead. Find the
Suppose you wish to improve the efficiency of a Carnot engine. Compare the improvement to be realized via each of the following alternatives:
Two identical resistors are connected first in series and second in parallel. The equivalent resistances of the two types of connections are, respectively, RS and RP. What is the ratio RS/RP?