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The note "middle C" on a piano has a frequency of 512 Hz in the fundamental tone. What is the wavelength of the sound in the surrounding air
The note "middle C" on a piano has a frequency of 512 Hz in the fundamental tone. What is the wavelength of the standing wave in the string
The current-density magnitude in a certain circular wire is J = (2.60 × 1010 A/m4)r2, where r is the radial distance out to the wire's radius of 3.00 mm, How much energy is converted to therma
A certain wire has a resistance of 150 O. What is the resistance of a second wire, made of the same material, that is 1/4 as long and has 1/2 the diameter
When 92.8 V is applied across a wire that is 9.8 m long and has a 0.32 mm radius, Find the resistivity of the wire
A charged capacitor is connected to a resistor and a switch as in the figure below. The circuit has a time constant of 2.5 s. Find the time it takes to reach this charge
A proton high above the equator moves straight away from the Earth with a speed of 395 m/s. What is the direction the proton is moving towards
A solenoid is formed by winding 26.7 m of insulated silver wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, Determine the radius of the wire
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, estimate the linear momentum of the electron
A 65 {\rm kg} student is standing atop a spring in an elevator that is accelerating upward at 3.0\;{\rm m}/{\rm s}^{\,2}. By how much is the spring compressed
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.863 rad/s. You, with a mass of 69.3 kg, walk clockwise around the platform along its edge at the speed of 1.19
A 0.54 cm high object is placed 8.5 cm in front of a diverging lens whose focal length is -7.5 cm. What is the height of the image
A large glass window has an area of 3.00 m2. What is the maximum possible magnitude of the magnetic flux through the window from the Earth's field
The focal length of a concave mirror is 16.5 cm. An object is located 39.5 cm in front of this mirror. How far in front of the mirror is the image located
A spherical shell of radius "R" carries a uniform charge "Q". What is the potential at the center of the sphere
A ring of radius "R" carries positive linear charge density ?(C/m). What is the electric field and what is the potential V(v) at the center of the ring
The surface charge density on an infinite sheet is -2.0 x 10^-6 coulomb. How far does the particle travel before reaching its turning point
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. how fast is the student going at the bottom of the slide
Four identical metallic objects carry the following charges: +1.19, +6.73, -4.26, and -9.98C. What is the final charge on each object
A 2.90 x 10 ^2 N force is pulling an 75.0-kg refrigerator across a horizontal surface. The force acts at an angle of 16.0° above the surface. Find the work done by the pulling force
A section of a sphere has a radius of curvature of 0.95 {\rm m}. If this section is painted with a reflective coating on both sides, what is the focal length of the concave side
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. What is the average power generated by the lifting force
All our household circuits are wired in parallel. Below is an example of a simple household circuit with 3 identical bulbs with resistance of 100 O each. What is the current running through each bul
An 9.0-kg object moving 5.0 m/s in the positive x direction has a one-dimensional collision with a 3.0-kg object moving 4.0 m/s in the opposite direction. What is the total kinetic energy of the two
A student calculates the unknown liquid to have a density of 0.87 g/cm^3. what should the student calculate as the percent error