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A cannon fires a cannon ball at 853.59 m/s in a straight line that passes directly over an observer's head. If the observer hears the sound of the cannon fire 2.45 seconds after he sees the cannon ball pass over his head, how far is the cannon from the observer? The temperature on this day is 8.99 oC.
A light spring with a spring constant of 80.0 N/m rests vertically on a table. A 2g balloon is filled with helium (0°C and 1 atm pressure) to a volume of 5.00 m3 and connected to spring, causing the spring to stretch and expand. How much does the ..
A thin 320g disk with a diameter of 5.20 cm rotates about an axis through its center with 0.705J of kinetic energy. What is the speed (in m/s) of a point on rim.
A 70 cm long, 0.8 mm diameter steel guitar string must be tightened to a tension of 2000 N by turning the tuning screws. By how much is the string stretched
Calculate the induced emf in the conductor and if the total resistance in the conductor is R what is the magnitude of the induced current.
A 100-turn square wire coil of area 0.04m2 rotates about a vertical axis at 1500 rev/min, as indicated. The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 × 10-5 T. compute the maximum emf induced in the coil..
Two loudspeakers are placed at either end of a gymnasium, both pointing towards each other. The sound emitted by the speakers is in phase and are of frequency of 256 Hz.
The coefficient of expansion of iron and zinc
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.
Determine the magnitude of the emf EMF induced in the loop after exactly time 6.00 s has passed since the circumference of the loop started to reduce.
the axes of two polarizers make a 71.3 deg angle to one another. what fraction of the light intensity is transmitted
Two narrow slits 54?m apart are illuminated with light of wavelength 510nm, What is the angle of the m=2 bright fringe in radians
A box slides across a frictionless floor with an initial speed v = 2.2 m/s. What is the shortest length of rough floor which will stop the box
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