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1. At standard Temperature and pressure sound travels at speed u=330m/s relative to the air through which it propagates.Four students A,B,C and D position themselves as shown if figure 1.20 (see attachment), with A,B,C in a straight line and D vertically above B.A steady wind is blowing with speed 30m/s along the line ABC.
If B fires a revolver what are the speed with which the sound will travel to A,C, and D. discuss whether the differences in your answers could be detected.
2. What must be one's speed relative to frame S in order that one's clock will lose 1 second per day as observed from S? What if teh are to lose one minute per day.
3. A group of Pi-mesons (pions) is observed traveling at speed 0.8c in the laboratory. What is the gamma factor for the pions? If the pions half life is 1.8E-8s what is their half life as observed in the lab frame?
If there are initially 32000 Pions, how many will be left after they have traveled 36m? What would be the answer to the previous question if you ignore time dilation?
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. How far has it traveled in this time
question monochromatic light falls on two very narrow slits 0.053 mm apart. successive fringes on a screen 5.60 m away
A particle is acted on by two torques about the origin: τ1 has magnitude 10 N m and pointsin the direction of increasing x, and τ2 has a magnitude of 12N m and points in the direction of decreasing y.
If 43.8 cm of copper wire (diameter = 1.02 mm, resistivity = 1.69 x 10-8?·m) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at the constant rate of 8.38 mT/s
The blade on a table saw spins at 3450 rpm. Its diameter is 25 cm. What is the speed of a tooth on the edge of the blade
A 75g bungee cord has an equilibrium length of 1.2 m. The cord is stretched to a length of 1.8m, then vibrated at 20 Hz. What is the spring constant of the bungee cord
Neglect air resistance during the descent. She comes to rest 3.00 m under the surface of the water. Identify the average force that the water exerts on the diver. This force is nonconservative.
A 10-kg block starts from rest on an incline. After 1 second the block travels at 12 m/s 1 meter down the incline. What is the theta, the angle of the incline
A sound wave is travelling trough a fresh water pool with a speed of 1482 m/s. what is the pressure amplitude of the wave
A 78.0 ohm and a 48.0 ohm resistor are connected in parallel. When this combination is connected across a battery, the current delivered by the battery is 0.275 A.
A solid conducting sphere with a radius of 35.4 cm contains atotal charge of 5.46 mC, evenly distributed over its surface.(a) What is the direction of the electric field at its surface? (b)What is the strength of the electric field at its surface?
An L-C circuit containing an 83.0-mH inductor and a 1.70-nF capacitor oscillates with a maximum current of 0.730A.calculate the energy stored in the inductor after 2.50ms of oscillation
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