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A dipole has two charges of .25C and -.25C. What is the flux during a Gaussian surface that includes?
a) Only the positive charge?
b) Only the negative charge?
c) Both charges?
d) No charges?
scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. in
The rotor in a certain electric motor is a flat, rectangular coil with 81 turns of wire and dimensions 2.57 cm by 4.32 cm. Find the maximum torque acting on the rotor
When light of wavelength 350 nm falls on a potassium surface, electrons are emitted having a maximum kinetic energy when the stopping voltage, Vs = 1.30 V. Find Work function of potassium and The cut-off wavelength.
The 1994 Winter Olympics included the aerials competition in skiing. In this occasion skiers speed down a ramp that slopes sharply upward at the end. Calculate what is the skier launch speed
An 8 g bullet is fired into a 2.5 kg ballistic pendulum and becomes embedded in it. If the pendulum raises a vertical distance of 6cm, compute the initial speed of the bullet.
a mass on a string of unknown length oscillates as a pendulum with a period of 2.5 s. parts a to d are independent
The kinetic energy of a 5.0 kg bowling ball just before it hits the ground is 455.0 J. determine from what height was the ball thrown
Two plastic semicircular rods are arranged into a complete circle with radius 8.5cm. The top half has charge of +15 pC, and the bottom half has charge of -15pC. Determine the magnitude and direction of the electric field at the center of the circl..
One of the harmonic frequencies of tube A with only one end open is 1080 Hz. The next-highest harmonic frequency is 1320 Hz. Find the length of the tube A
A softball player swings a bat accelerating it from rest to 2.6 rev/s in a time of .20s. compute the torque the player applies to one end of it
A child throws a snowball over a wall. The horizontal distance which the snowball travels is 3.83 m. Determine the initial speed of the snowball
The primary of a step-down transformer has 290 turns and is connected to a 120 V rms line. The secondary is to supply 17 A at 7 V. Find the number of turns in the secondary, assuming 100% efficiency
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