Name: Anonymous 2007-10-14 2:12
"An Electron Gun fires an electron horizontally with a velocity of 20km/s. Calculate the strength and Direction of the electric field required to exactly cancel the gravitational force acting on the electron."
"How much energy is transported across a 1.0cm^2 area per hour in vacuum by electromagnetic wave whose E-field has an rms strength of 15V/m?"
"A certain FM radio tuning circuit has a fized capacitor C = 1.4nF. Tuning is done by a variable inductance. What range of values must the inductance have to rune stations from 88 to 108 Mhz?"
"The tips of the wings of an all metal aircraft are 21m apart. If the Earths magnetic field is 6.0 x 10^-5 T at an angle of 60 degrees away from horizontal, what is the emf generated when the aircraft is travelling horizontally at 600km/hr?"
"A square loop of wire 2.50cm on a side is places with its face parallel to a magnetic field of 0.650 T between the pole pieces of a large magnet. Find the magnitude of the torque on the loop when a current of 1.50A flows through the wire."
"The field inside a long solenoid is approximately constant and uniform. Consider a source of electrons lying on the axis inside the solenoid. The electrons have arbitrary directions but all have constant velocity of 512km/s. If the solenoid diameter is 10cm, what strength magnetic field is required to guarantee that the electrons don't hit the walls?"
ALL PHYSICS-ALLY RETARDED UNTIL ANSWERED.
"How much energy is transported across a 1.0cm^2 area per hour in vacuum by electromagnetic wave whose E-field has an rms strength of 15V/m?"
"A certain FM radio tuning circuit has a fized capacitor C = 1.4nF. Tuning is done by a variable inductance. What range of values must the inductance have to rune stations from 88 to 108 Mhz?"
"The tips of the wings of an all metal aircraft are 21m apart. If the Earths magnetic field is 6.0 x 10^-5 T at an angle of 60 degrees away from horizontal, what is the emf generated when the aircraft is travelling horizontally at 600km/hr?"
"A square loop of wire 2.50cm on a side is places with its face parallel to a magnetic field of 0.650 T between the pole pieces of a large magnet. Find the magnitude of the torque on the loop when a current of 1.50A flows through the wire."
"The field inside a long solenoid is approximately constant and uniform. Consider a source of electrons lying on the axis inside the solenoid. The electrons have arbitrary directions but all have constant velocity of 512km/s. If the solenoid diameter is 10cm, what strength magnetic field is required to guarantee that the electrons don't hit the walls?"
ALL PHYSICS-ALLY RETARDED UNTIL ANSWERED.