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A particle of mass 3 kilogram is attached to the end of a string of length 4 meter, whose other end is fixed.
Determine the least horizontal speed with which it must be protected from the lowest point, if it is to describe complete vertical circles.
Determine also the tension in the string at the instant of the projection.
Two identical clocks are synchronized. One is then put in orbitdirected eastward around the Earth while the other remains on the Earth. Which clock runs slower? When the moving clock returns tothe Earth, are the two still synchronized?
a 27 kg block is pulled across a horizontal surface by a rope. the block has an acceleration of 3.5 ms2 and the
In an L-R-C series circuit, 305 , 0.401 , and 5.98×10-8 . When the ac source operates at the resonance frequency of the circuit, What is the amplitude of the voltage across the resistor
A hydrogen atom initially in the ground state absorbs a photon, which excites it to the = 4.00 state, estimate the frequency of the photon
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
A 25 g bullet strikes and becomes embedded in a 1.35 kg block of wood placed on a horizontalsurface just in front of the gun. what was the muzzle speed of the bullet
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.5 kg and the sign has a mass of ms = 15.9 kg. What is the net force the hinge exerts on the beam
an 15.0-kg box is released on a 35.0 incline and accelerates down the incline at 0.290m/s^2, Find the friction force impeding its motion
Concave Shaving Mirror A concave shaving mirror has a radius of curvature of 35.0 cm. It is positioned so that the (upright) image of a man's face is2.00 times the size of the face. How far is the mirror from the face? Point Source A point source of ..
At first the spacecraft and the asteroid are at rest, 450m apart. How much time does it take for the ship and the asteroid to meet?
A parallel-plate capacitor has a surface charge density = 8.0 10-5 C/m2 and an electric field E = 2.7 106 V/m in the material between the plates.
If the astronauts in this centrifuge experience a centripetal acceleration 9.0 times that of gravity, what is the linear speed of the capsule
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