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When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. One of the trains moves at 33.5 m/s, and the observer hears a beat frequency of 3.2 beats per second. What is the speed of the second train, which travels faster than 33.5 m/s?
A 2.0 m conductor is formed into a square and placed in the horizontal xy-plane. What is the magnetic flux through the conductor
A spherical surface completely surrounds a collection of charges. Find the electric flux (with its sign) through the surface if the collection consists of (a) a single +1.90 × 10-6 C charge, (b) a single -2.40 × 10-6 C charge, and (c) both of the ..
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 32.00, What is the angular spread of the beam after passing through the prism
What diameter has the tip of the minute hand with 100mil/hr tangential speed? Illustrate what diameter has the tip of the hour hand with 100mil/hr speed?
If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
Ice water is heated to boiling in a 500mL beaker. The beaker's temperature from 0 oC to 100 oC. What is the change in volume of the beaker
What is the magnitude of the normal force that each brake pad applies to the rim . find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
A magnifier has a magnification of 8 times. How far from the lens should an object be placed so that its (virtual) image is at the near-point distance of 25 {rm cm}.
The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to be constant) does the wood exert on the bullet? Explain how long does it take the bullet to come to rest?
This question has to do with the oil drop experiment and how much voltage must be applied to keep a drop suspended in air. how much voltage must be used to keep the oil drop suspended
What is the speed of the water leaving the nozzle
A 15.5kg object moving in the +x direction at 7.0m/s collides head-on with a 11.0kg object moving in the -x direction at 6.0m/s, Find the final velocity of each mass if the objects stick together
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