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Q. An opera singer in a convertible sings a note at 419 Hz while cruising down the highway at 81.0 km/hr. What is the frequency (in Hz) heard by a person standing beside the road in front of the car? Assume that the speed of sound is 343 m/s
Q. Two masses, m1 and m2, are lying on a plane without friction and are connected by a striong. A force F is applied to the mass m1 so that the whole system accelerates along a straight line. What is the tension of the string T between the masses m1 and m2? What is the acceleration of the system?
A certain particle has the life time of 10^-7 s, while measured at rest. How far does it go before decaying if its speed is 0.99 c when it is created.
Eight identical, non-interacting particles are placed in a cubical box of sides L = 0.2 nm. Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states if (a) particles are electrons and (b) particles..
A child slides down a slide with the 29 degree incline, and at the bottom her speed is precisely half of what it would have been if the slide had been frictionless. Compute the coefficient of sliding between the child and the slide.
A bartender slides a beer mug at 1.30 m/s towards a customer at the end of a frictionless bar that is 2.0m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar.
Boat A negotiates a curve whose radius is 370 m. Boat B negotiates a curve whose radius is 120 m. Each boat experiences the similar centripetal acceleration. What is the ratio of speed of boat A to that of boat B.
FInd the quantities and volume of liquid in each tank and predicting the damage or danger caused in the process.
If a freight train can accelerate at 0.050 m/sec2, how far must it travel to increase its speed fro 2.0 to 8.0 m/sec?
Each is afraid that one vine will break; as a result they grab each other and hang on. They swing upward together, reaching a point where the vines make an angle of 22.1° with the vertical. Find the value of the ratio m/M.
A proton is travelling to the right at. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of each after the collision? What is the direction of the pro..
An ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
How do you establish the value of theta
A butterfly at eye level is 26 cm in front of a plane mirror. You are behind the butterfly, 48 cm from the mirror. What is the distance between your eye and the image of butterfly in the mirror.
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