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Tuning forks X and Y have different frequencies and produce a 6-Hz beat frequency when sounded together. When X is sounded along a 445-Hz tone, a 1-Hz beat frequency is detected. When why is sound it along with the 445-Hz tone, a 5-Hz beat frequency is heard. Assume that Fx is greater then Fy. (a) what is Fx? (b) what is Fy?
On a weekend archeological dig, you discover an old club-ax thatconsists of a symmetrical 10.0 kgstone attached to the end of a uniform 3.5 kg stick. You measure the dimensions of the club-ax as shown in the figure
A thin, uniform, metal bar, 2.00 m long and weighing 90.0 N, ishanging vertically from the ceiling by a frictionless pivot. Find the angular speed of the bar just after the collision
When light of wavelength 303 nm falls on a potassium surface, electrons are emitted that have a maximum kinetic energy of 1.99 eV. What is the work function of potassium? The speed of light is 3 × 10^8 m/s and Planck’s constant is 6.63 × 10^?34 J · s..
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus s..
A 11.0g bullet is fired horizontally into a 103g wooden block that is firstly at rest on a frictionless horizontal surface and connected to a spring of constant 154N/m. The bullet becomes embedded in block. If the bullet-block system compresses the s..
A NASCAR racecar rounds one end of the Martinsville Speedway. This end of the track is a turn with radius approximately 187 ft. If we approximate the track to be completely flat and the racecar is traveling at a constant 68.00 mph around the turn,..
when the nuclear reactor accident occurred at chernobyl in 1986 2.0times107ci were released into the
A projectile is shot horizontally at 65.3 m/s from the roof of a building 24.4 m tall. Determine the distance from the base of the building that the projectile lands
A uniform plate of height 1.020 m is cut in the form of a parabolic section. Find the distance from the rounded tip of the plate to the center of mass
a wire of cross-sectional area 5.0010-6 m2 has a resistance of 1.75 ohms. what is the resistance of a wire of the same
A 17 g bullet is accelerated in a rifle barrel 73.4 cm long to a speed of 493 m/s. Use the work-energy theorem tofind the average force exerted on the bullet while it is being accelerated. Answer in units of N.
An object of height 5 cm is placed 30 cm in front of spherical concave mirror. If the image is real and 10 cm high, what is the radius of curvature of the mirror
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