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It is the electromagnetic equivalent of a bow wave or a sonic boom. An electron is traveling through water at a speed 7.8% faster than the speed of light in water. (a) Determine the electron's total
A baseball player hits a line drive. Just before the ball is struck, it is moving east at a speed of 39.6 m/s (89 mi/h). Just after contact with the bat, 1.07 x 10-3 s later, the ball is moving wes
Calculate the amount of charge that will flow through Mitch's amplifier once the capacitor has fully dissipated. HINT: Combine equations first before plugging in.
What is the ratio of the minimum viewing distance to the vertical dimension of the TV screen such that you will not be able to resolve the lines? assume the average wavelength of light coming from t
A step-up transformer has 4 turns on the primary coil and 500 turns on the secondary coil. If this transformer is to produce an output of 4500 V with a 12 mA current, what input current and voltage
A neon sign that requires a voltage of 12000 V is plugged into a 120 V wall outlet. What ratio of turns (primary/secondary) must the transformer have to power the sign?
A toroidal selenoid has 500 turns, cross-sectional area 6.25cm and mean radius 4.00cm a) Calculate the coil's self inductance
Two coils are wound around the same cylindrical form, When the current in the first coils is decreasing at a rate of -0.242 A/s , the induced emf int he second coil has magnituden1.65x10^-3V. a) Wh
How to derive the expression for the magnitude of the plasma frequency for the case of an actual plasma that is overall neutral and consists of electrons and positrons.
If the caffeine concentration in a particular brand of soda is 1.99 mg/oz, drinking how many cans of soda would be lethal? Assume 10.0 grams of caffeine is a lethal dose, and there are 12 oz in a ca
The half life of Thorium 227 is 18.72 days. It decays by alpha emission to Radium 223, an alpha emitter whose half life is 11.43 days. A particular sample contains 10^6 atoms of Thorium 227 and no R
An electron approaches a 1 nm wide potential energy barrier of height 5 ev. What energy electron has a tunneling probability of 10%?
Determine the speed of sound waves in water and find the wavelength of a 262 Hz wave. Hint note the medium through which the waves travel.
A sinusoidal wave with an amplitude of 1.5 cm and a frequency of 100 Hz travels at 200 m/s in the positive x-direction. Write the equation for the wave's displacement as it travels.
If the clock's driving spring is allowed to run down, damping due to the friction will cause the pendulum to slow to an eventual stop. If the time constant for decay is 300 sec, how long will it tak
A simple pendulum has a period of 2.40 seconds at a location where g = 9.810 m/s^2. What is the value of g at another place on the earth's surface where this pendulum has a period of 2.42 seconds.
The cell is divided into three sectors and each user employs a directional antenna and voice activity provision. The effective Eb/I0 at the input of a conventional receiver is 4.5 dB and the noise
After the collision, the velocity of the bluepuck is 0.050 m/s in the same direction as its initial velocity. Find (a) the velocity (magnitude and direction) of the red puck after the collision; and
The ball is released from rest with the string taut and horizontal (theta = 90.0 °). Find (a) speed of the ball as it swings through the lowest point (theta = 0 °) , and (b) the tension in t
A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an angle θ above the horizontal. She pulls on the strap with a 35.0-N force. This fricti
What is the semi-major axis of the orbit traced out by the more massive star? c). If the eccentricity e=0.4, what is their closest approach to each other.
a) sketch the "before" and "after" situations. specify all the given parameters. b) Write down the four-momentum column vectors of the initial particle and the final photon (in terms of M)
If it startsfrom rest at x = 5 cm and reaches x = 2.5 cm for the first time after 2 s, find (a) theposition at any time t after it starts, (b) the speed at x = 0, (c) the amplitude, period andfreque
A toroidal selenoid has inner radio r1= 15.0 cm and outer radius r2= 18.0 cm. The selenoid has 250 turn and carries a current of 8.50 A. What is the magnitude of the magnetic field at the following