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A violin is tuned by adjusting the tension in the strings. OnBrian’s violin, the “A” string is tuned to aslightly lower frequency than Andrew’s, which is correctlytuned to 440.0 Hz.a) What is the frequency of Brian’s string if beats of 2.0Hz are heard when the two strings are played at the same time?b) Does Brian need to tighten or loosen his “A” stringto get in tune with Andrew? Explain your reasoning.
Consider a 1112 kg automobile as it passes over a hill on a road that follows the arc of a vertical circle of radius 48 m near its top. Find the normal force acting on the car when the car is at rest
The potential difference between two points in a wire 10 m apart is 12 V. When the current density is 4*10^7 A/m^2. find the resistivity of the material in the wire
A wire 25.1 m long and 6.00 mm in diameter has a resistance of 15.0 m. A potential difference of 28.0 V is applied between the ends. Calculate the resistivity of the wire material
A 5.00 g bullet is fired into a 500g block of wood suspended as a ballistic pendulum. What was the magnitude of the momentum of the combined mass immediately after the collision
A particle moves along the x axis. It is initially at the position 0.330 m, moving with velocity 0.250 m/s and acceleration -0.280 m/s2. Find its velocity at the end of this time interval
Two acrobats, each of 60.0 kg, launch themselves together from a swing holdings hands. What should be the distance (in m) between the two swings
The electron mass is 9×10?31 kg. What is the magnitude of the momentum of the electron
A 12 volt battery is connected in series with a 100,200 and 300 resistors. Find the current in the loop and the voltage drop across each resistor
A convex mirror has a focal length of magnitude 6.23 cm. (a) If the image is virtual, what is the object location for which the magnitude of the image distance is one third the magnitude of the object distance? (Enter distance in cm from the front of..
a 7.4 cm-diameter-baseball has a mass 145 g and is spinning at 2000 rpm. Treating the baseball as a uniform solid sphere, whats its angular momentum
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. Determine the acceleration (magnitude and direction) of the man
An ideal transformer shown in the ?gure below has a primary with 45 turns and secondary with 18 turns. What is the reading of the ammeter
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