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A sound wave moving through water has a frequency of 256 Hz and a wavelength of 5.77 m.What is the speed of sound in water?
Its density is 8890 kg/m3. The student finds that the time for the pulse to travel from one end to the other is 1.56 × 10-3 s. How long is the rod?
A football player runs directly down the field for 24 mbefore turning to the right at an angle of 30 from his original direction and running an additional 17 m before being tackled. What is the mag
A constant frictional force of 0.035 N exists between barrel and projectile. How high does the projectile go if the spring was compressed 5.0 cm for this launch?
A 0.40-kg block initially at rest on a frictionless horizontal surface is acted upon by a force of 3.0 N for a distance of 4.5 m. How much kinetic energy does the block gain?
A superhero flies 135 m from the top of a tall building at an angle of 30 below the horizontal. What is the horizontal component of the superhero's displacement?
Electromagnetic waves with a wavelength of 215 nm strike the surface and eject electrons. Find the maximum kinetic energy of the ejected electrons. Express your answer in electron volts.
If the concentration of carbon dioxide in the atmosphere is 360 ppm by volume, calculate the mass of this gas in the atmosphere, in billions of metric tons, bmt.
one package is dropped from an airplane 344 m above the ground. if air resistance is neglected, how long will it take the package to reach the ground?
A particular organ pipe can resonate at 264 Hz, 440 Hz, and 616 Hz, but not at any other frequencies in between.
An electron has a kinetic energy of 1.80 10-17 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 6.30 10-5 T. Determine the radius of the path?
Electromagnetic waves with a wavelength of 215 nm strike the surface and eject electrons. Find the maximum kinetic energy of the ejected electrons.
The rod rotates with an angular speed of ω = 154 rad/s about an axis that passes perpendicularly through its other end. Find the magnetic moment of the rotating charge.
Determine the orbit radii for the 12C and 13C isotopes as they pass through the field. (b) Show that the ratio of radii may be written in the form r1/r2 = the square root of m1/m2.
A person on the 20th floor (66 m above ground) of a building reaches out and throws a ball directly upwards at 13 m/s. How long (secs) until a person on the 5th floor (16.5 m) see the ball go by th
The locomotive is moving at 21 km/h. The engineer of the high-speed train immediately applies the brakes.What must be the magnitude of the resulting constant deceleration if a collision is to be jus
The rod rotates with an angular speed of ω = 149 rad/s about an axis that passes perpendicularly through its other end. Find the magnetic moment of the rotating charge.
A violinist places her finger so that the vibrating section of a 1.2 g/m string has a length of 30 cm, then she draws her bow across it; the string vibrates in its fundamental mode. A listener near
A portion of an electric circuit connected to a 40 ohm resistor is embedded in 0.20 kg of a solid substance in a calorimeter. Calculate the rate at which heat is generated in the resistor.
Find the magnitude of the velocity of the 2.8 kg fragment immediatedly after the explosion
While attempting to tune a string to 515 Hz, a piano tuner hears 5 beats/s between a reference oscillator and the string. What are the possible frequencies of the string?
A long line carrying a uniform linear charge density + 50.0 , mu {rm C}/{rm m} runs parallel to and 10.0;{rm cm} from the surface of a large, flat plastic sheet that has a uniform surface charge de
The fourth-order bright band is 14.4 degrees. If the screen is 150 cm from the double-slit, how far apart is this bright band from the central peak?
A point charge is distance from the center of a dipole consisting of charges separated by distance . The charge is located in the plane that bisects the dipole. At this instant, assuming r>>s