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Q. The A string of a violin is 32cm long between fixed points with a fundamental frequency of 440Hz and a mass per unit length of 6.5×10-4 kg/m. What is the wave speed in string?
Q. A tapered, pressurized tank for a rocket contains 0.250m3 of kerosene, which has a mass of 205 kg. The pressure at the top of the kerosene is 2.1 x 105 Pa. The pressure force of 18.0 kN on the tank's bottom, which has an area of 0.080 m2. Find out the depth of the kerosene.
A coin is placed 8 cm in front of a concave morror. T he mirror produces a real imege that has the diameter 4 times larger than that of the coin. What is the image distance.
in what direction must storm now sail to reach. The car is uniformly accelerated during the entire time. What net force is exerted on it.
A long, straight wire carries a 25.0 current. An electron is fired parallel to this wire with a speed of 280 in the same direction as the current, 2.30 from the wire.
A certain car battery with a 12.0 V emf has an initial charge of 115 A·h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how various hours can it deliver energy at the rate of 110 W.
What is an average speed of the runner
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
A uniform plank of length 5.9 m and weight 212 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support .To what distance x can a person who weighs 443 N walk on overhanging part of the plank before it just begins ..
A 2.50 g bullet, traveling at a speed of 465 m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 275 g. What is the speed of the bullet/block combination immediately after collision.
Monochromatic light (640 nm) strikes a pair of slits at normal incidence, forming the double-slit interference pattern on a screen located 1.82m from the slits. It shows the interference pattern observed on the screen. What is the slit separation.
find the radius of curvature of the vertical profile of the road at A. Using value of the curvature found, determine the force exerted on a 160-lb driver by the seat of his 3100-lb car as the car, traveling at a constant speed of 50 mi/h, passes t..
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
A rod is initially at a uniform temperature of 0 o C throughout. One end is kept at 0oC , and the other is brought into contact with a steam bath at 100 o C.
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