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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
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 2.7 cm, and the freque
A proton and an alpha particle (q = +2e, m = 4 u) are fired directly toward each other from far away, each with an initial speed of 0.011 c. c is the speed of light (3.0 x 10^8 m/s) What is their di
Compare the average electric fields generated by the two devices - how many times stronger is the electric field that is generated by the cellphone than the maximum permissible field leaking from a
What is the magnitude of the electric field at the point on the x-axis, between the charges, where the electric potential is zero?
Two 10-cm-diameter charged rings face each other, 23.0cm apart. Both rings are charged to + 40.0nC . What is the electric field strength at the midpoint between the two rings? and at the center of t
An inferometer consists of 50 parabolic antennas placed 14 m apart. It operates at a wavelength of 21cm. Compute the angular seperation between principle maxima and the angular width of the zero or
For the isomerization of n-butane to isobutene we have G= -RT LnK where R= 1.9872 and K= (isobutene)/(n-butane) The temperature dependent Gibbs free energy (in calories) for isobutene and nbutane ar