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A copper block is suspended from a wire, as in part 1 of the drawing. A container of mercury is then raised up around the block, as in part 2, so that 53.0% of the block's volume is submerged in the mercury. The density of copper is 8890 kg/m3, and that of mercury is 13 600 kg/m3. Find the ratio of the fundamental frequency of the wire in part 2 to the fundamental frequency in part 1.
A 0.33-m-long violin string has a mass of 0.89 g. The peg exerts a 45 N force on it. Determine the lowest frequency sound produced by the vibrating sting
An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it enters the electric field? A. to the left B. to the ri..
A man throws a baseball straight up in the air at 19.6 m/s. How many seconds does it take to reach the top
A projectile is launched with initial speed of 60 m/s at an angle of 30 degrees above horizontal. the projectile lands on hillside 4 seconds later. what is velocity at the highest point of trajectory
When he accelerates from a stoplight, the tassel deflects backward toward the rear of the car hanging at an angle of 6.30° relative to the vertical. Find the tension in the string holding the tassel
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
A hockey player is standing on his skates on the frozen pond when an opposing player, moving with a uniform speed of 13 m/s, skates by with the puck. After 2.5 s, the first player makes up his mind to chase his opponent.
An 8 g bullet is fired into a 2.5 kg ballistic pendulum and becomes embedded in it. If the pendulum raises a vertical distance of 6cm, compute the initial speed of the bullet.
A plane is flying in the horizontal plane. At time t1 = 0 s with the components of its velocity are vx= 100 m/s and vy = 120 m/s. At time t2= 20 s the components are vx = 80 m/s and vy = 142 m/s.
A generator connected to an RLC circuit has an rms voltage of 130V and an rms current of 33mA, what is the inductive reactance of the circuit
A uniform electric field of magnitude 4.10 × 105 N/C points in the positive x direction, Find the change in electric potential energy
Jeff of the Jungle swings on a 7.6- vine that initially makes an angle of 47 with the vertical. If Jeff starts at rest and has a mass of 88 , illustrate what is the tension in the vine at the lowest point of the swing?
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