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As you stand near a railroad track, a train passes by at a speed of 31.7 m/s while sounding its horn at a frequency of 213 Hz. What frequency do you hear as the train approaches you and what frequency while it recedes? Take the speed of sound in air to be 343 m/s.
question two capacitors are connected in parallel across the terminals of a battery. one has a capacitance of 2.0
Consider the equation for the velocity of an electromagnetic wave in a wire on the bottom of page 621. Under what conditions would this velocity be greater than c (the speed of light)?
an aluminum cup contains 225 g of water and a 40 g copper stirrer all at 27degc. a 420 g sample of silver at an initial
A man with mass m1 = 54 kg stands at the left end of a uniform boat with mass m2 = 174 kg and a length L = 2.6 m. After the man walks to the right edge of the boat, what is the new location the center of the boat
A projectile is launched on an unnamed planet. The projectiles vertical position is y(t)= -5t^2 + 15t +50, find the vertical velocity of the projectile launched
A Boeing 777-200 airliner with a wingspan of 64.0 m is flying perpendicular to the Earth's magnetic field at its cruising speed of 250 m/s. What potential difference is induced between the plane's wingtips
What are the units of the spring constant k in SI units, which are also called MKS units (MKS = meter-kilogram-seconds)? What are the units in the cgs system (centimeter-gram-second)?
The dipole is held perpendicular to a uniform electric field with field strength 980V/m , then released. What is the dipole's angular velocity at the instant it is aligned with the electric field?
An electronic attachment for camera produces flash by usingenergy stored in 880&10-6 F of capacitor, Determine the value of resistance
The current through a 50-? resistor is I= 0.80 sin(240 t). How much power on average is dissipated in the resistor
In a large centrifuge utilized for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. A trainee riding in the chamber of a centrifuge rotating with a constant angular speed of 2.6 r..
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 20.0 cm, Find the electric field just inside and just outside the paint layer
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