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A pendulum of period 2s is released from rest at an inclination of 5 degrees to the (downward) vertical. What is its angular velocity when it reaches the vertical? When it first returns to it's starting point, it is given an impulsive blow towards the vertical that increases the amplitude of swing to 10 degrees. Find it's subsequent angular position as a function of time.
How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted.
Suppose an RLC circuit must be created by choosing an inductor and capacitor to place in series with a 1200 ohm resistor. To tune in the AM band frequencies, calculate an appropriate value for the inductance and determine the max and min capacitance..
A loudspeaker of mass 25.0 is suspended the distance of = 2.40 below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.50. What is the tension in each of cables.
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. By how much did the energy change during the insertion
Calculate the relativistic kinetic energy of a 920 kg car moving at 33 m/s if the speed of light were only 45 m/s
The rod is initially at rest and oriented horizontally and then released so that it swings to the bottom. Illustrate what are all the forces acting on the rod?
Steel train rails are laid in 12.2m -long segments placed end to end. The rails are laid on a winter day when their temperature is -2.00 oC. what is the stress in them on a summer day when their temperature is 33.0 oC
Suppose a star with radius 8.39 multiply.gif 108 m has a peak wavelength of 686 nm in the spectrum of its emitted radiation. What is the surface temperature of the star
At some automobile toll-collecting stations, the thin metal wire sticks up from the road and makes contact with cars before they reach the toll collector. What is the reason of this wire.
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild and r is its radius. estimate the magnetic field strength at the center of coil
A cord passes over a weightless and frictionless pulley. Masses of 200 and 300 grams are attached to the ends of the cord. Find the distance the masses will move during the fifth second after they had started.
The electric potential at a position located a distance of 21.6 mm from a positive point charge of 8.70×10-9C, estimate the value of the second charge
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