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In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.4 kg {\rm kg} sphere. Students determine the frequencies of standing waves on the horizontal segment of the string, then they raise a beaker of water until the hanging 1.4 kg {\rm kg} sphere is completely submerged. The frequency of the fifth harmonic with the sphere submerged exactly matches the frequency of the third harmonic before the sphere was submerged.
What is the diameter of the sphere?
A horizontal water main with a cross-sectional area of 188 cm^2 necks down to a pipe of area 49.0 cm^2. Determine the flow rate through the system
A block with mass m = 15kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4234N/m after being compressed the distance x1 = 0.536m from the spring's unstretched length. The floor is frictionless except for a roug..
A square plate of copper with 35.0-cm sides has no net charge and is placed in a region of uniform electric field of 60.0 kN/C directed perpendicularly to the plate. find the total charge on the positive face of the plate
Atoms in a solid are in continuous vibrational motion due to thermal energy, What is the approximate period of oscillation of a typical atom
a golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struckif the club, what is the average force exerted on the ball
Three equal positive charges Q are each fixed at a corner of an equiliateral triangle of side length a, Draw a diagram showing the individual electric field vectors due to each charge at the triangle's center
An electron is accelerated from rest in a uniform electric field of intensity 420 N/C. Find the following: its velocity and kinetic energy after 3.0 nanoseconds. the distance it travels during the time interval
Explain why you are safe and unaffected inside a car that is struck by lightning. Also explain why it might not be safe to step out of the car just after the lightning strike, with one foot in the car and one on the ground.
A person of mass 75kg stands at the center of a rotating merry-go-round platform of radius 3.5mand moment of inertia 920kg?m2. compute the angular velocity when the person reaches the edge
Amazingly, at exact distance that you calculated in question 2a (73.5 meters), there was a trampoline! Thinking quickly, I orient myself appropriately and hit the trampoline.
A 5.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool
a loaded cart has a total mass of 227kg.if a 312n force acting at an angle of 30degree to the ground is applied. how
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