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A plane electromagnetic wave has a maximum electric field magnitude of 3.20 x 10-4 V/m. Evaluate the magnetic field amplitude.
How much power is radiated with a tungsten sphere (emissivity e= 0.35) of radius 22cm at a temperature of 25 degrees celsius. If the sphere is enclosed in a room whose walls are kept at -5 degree celsius what is the net flow rate of energy out of th..
A ball of mass 0.300kg that is moving with a speed of 5.4m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
a rifle with a mass of 1.2kg fires a bullet with a mass of 6.0g (0.006kg). What is the momentum of the bullet after the rifle is fired
A container of volume 23 cm3 is initially filled with air. The container is after that evacuated at 0oC to a pressure of 30 mPa. How many molecules are in the container after evacuation if we suppose that air is an ideal gas.
a parallel plate capacitor is charged to 12 v and the voltage source is then disconnected. when the air space between
You want to double the resonance angular frequency of a series R-L-C circuit by changing only the pertinent circuit elements all by the same factor
an aluminum rod has a resistance of 1.234 4 at 20.0degc. the rod is cooled down to 20 c. and at that temperature it is
Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun, but a much smaller diameter. If you weigh 670 N on the earth, what would you weigh on the surface of a neutron star that has the same mass as our su..
Two bumper cars moving on a frictionless surface collide elastically. What is the speed of the first bumper car after the collision
The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. find in how short a distance the train can be stopped at constant acceleration without causing the crates to slide over the f..
a capacitor with a capacitive reactance of is connected in series with a 100 resistor across in ac source of frequency 60.0hz. what is the phase angle
The toroid shown in the figure hasa wire carrying a current I= 9.00 Amperes wrapped around it N= 650times. The inner radius is R1= 24.0cm and outer radiusR2= 28.8cm.
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