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A pendulum of mass 0.25 kg and length L= 1.0 m is attached to a line which is fixed at point P, and makes an angle of 15 degrees with respect to the vertical. The mass rotates in a horizontal circle at constant speed of 1.5 m/s. Determine the following:
a) The force of tension in the line
b) The radius r of the circle the pendulum traces out.
c) The period and frequency of the motion.
A 175-g object is attached to a spring that has a force constant of 72.5 N/m, Find the locations of the object when its velocity is one-third of the maximum speed
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 30km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out the electric potential difference.
A 50 kg person climbing a rope slides down after reaching the top. find The frictional force acting upward on the person
What is an average power output of the laser. What is the rms value of the electric field in the beam.
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r, how fast is the roller coaster traveling at the bottom of the dip
10 A of current flows through a wire oriented perpendicular to a magnetic field strength of .2T, What is the magnetic force per unit length on the wire?
A glass sheet 1.10 ?m thick is suspended in air. Calculate the minimum value of the index of refraction of the glass sheet that produces this effect
A string of a violin is 32 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 7.2 x 10-4 kg/m. What are the wave speed and the tension in the string
A ball is thrown straight up from the edge of the roof of the building. A second ball is dropped from the roof a time of 1.01 s later. You may ignore air resistance.
the diameter of the vessel is 5.6 mm. In a 0.60-T magnetic field illustrate what is the magnitude of the voltage that is measured with the electrodes in the drawing?
An electron of mass 9.11×10?31kg leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, Find the net force. (You can ignore the gravitational force on the electron)
A large metal ring has a radius of 0.30 m and a mass (uniformly distributed) of 2.5 kg. The ring hangs from a nail as shown. What is the rotational inertia of this object
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