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A violin string 12.2 cm long and fixed at both ends oscillates in its n = 4 mode. The speed of waves on the string is 285 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
The crates of weight 1490N will move with speed 2.2m/s at the top of a ramp that slopes downward at an angle 21.0^\circ. The ramp will exert a 533N force of kinetic friction on each crate, and the maximum force of static friction also has this val..
A mass m = 17.0 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4047.0 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is ?k = 0.42. The mass leaves th..
Determine the rebound angle ? if the coefficient of restitution for the impact of the ball with the floor is 0.4.
The velocity in a certain flow field is given by the equation V=(3x^2+1)i - 6xyj. Determine the expressions for the two rectangular components of acceleration.
The electron beam Cathodes and anodes An electron gun usually consists of a cathode and an anode. The cathode is a filament that is connected to a potential difference (filament voltage), and the resulting current heats the filament to incandescen..
These coils have a radius R = 33 cm. The distance between the coils is, of course, also d = 33 cm (otherwise they would not form a Helmholtz system). Each coil has 72 turns. As explained above, we will not measure the current but rather the voltag..
Minh pulls a 10-kg crate on a rough inclined ramp with a cable tension F, directed towards the top and parallel to the plane. The angle of inclination of the plane is 30 and the coefficients of static and kinetic friction between the block and the in..
A shravani pulls a 5-kg block along a rough horizontal floor with a force, F, which makes an angle, theta = 30 above the horizontal, as shown. The coefficients of static and kinetic friction between the block and the floor are 0.5 and 0.3 respecti..
Transverse waves on a string have wave speed , amplitude , and wavelength . The waves travel in the -x direction, andat the end of the string has its maximum upwarddisplacement. Find the frequency of these waves.Find the wave number of these waves..
Large fossil fuel or nuclear electrical power plants operate most economically when run at full capacity 24 hours a day. Excess electrical energy can be "stored" and recovered by pumping water into a reservoir on top of a mountain and letting it fall..
Two tuning forks oscillating coherently and in phase at 12000Hz are separated by 0.35m. Calculate the angles of minimum intensity
An electron and a positron each have a mass of 9.11 x 10-31 kg. They collide and both vanish, determine the energy of the electromagnetic radiation
This time, william tell is shooting at an apple that hangs on a tree. the apple is a horizontal distance of 20.0m away and at a height of 4.00m above the ground. what is the arrow's inital velocity
the motion of a projectile fired at t0. it initial speed is 50 ms and its initial projection angle is 45 degree from
Two cars are 1.35km apat and starting com rest mov directly toward each other. Car a has an acceleration of .37 m/s2 and car b has acceleration of .52 ms2
A glass soda bottle is emptied of soda and filled to the very top with water. A cork is carefully fitted into the top of the bottle, leaving no air between the cork and the water.
The primary coil of a transformer has 3,802 loops. The secondary coil has 602,030 loops. The primary coil has a 97 A current and 2 V. ) Determine the power of the primary coil......W. Assuming no losses, determine the power of the secondary coil......
The density of petrol is 730 kg/m^3 at 0 degrees C. Its average coefficient of expansion is 9.60 * 10^-4 degrees C. Assuming you have a 45 litre full tank, how many extra grams of petrol would you get
selzer estimates the total cost of servicing the warranties will be $120,000 for 2 years. Estimate revenues earned on basis of costs incurred an estimated costs.
Determine the linear (tangential) acceleration of the rim of the bicycle's wheels (in the reference frame of a cyclist riding the bike).
Can the atoms in a liquid helium at 4K (interatomic distance about 0.1 nanometer) be adequately represented by nonspreading wave packets, so that their motion can be described classically.
A block of ice of mass 3.50 is placed against a horizontal spring that has force constant = 210 and is compressed a distance 2.90×10?2. Calculate the work done on the block by the spring
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