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The position of an object connected to a spring varies with time according to the expression x = (4.3 cm) sin(6.9?t).
(a) Find the period of this motion.
s
(b) Find the frequency of the motion.
Hz
(c) Find the amplitude of the motion.
cm
(d) Find the first time after t = 0 that the object reaches the position x = 2.6 cm.
A sample of ethyl alcohol (C2H5OH) has a density of 806 kg/m3 and a volume of 1.73 x 10-3 m3. find the number of molecules in the sample
If 61.5 L of oxygen at 18C and an absolute pressure of 2.45 atm are compressed to 48.8L and at the same time the temperature is raised to 56 degrees C, what will the new pressure be
a skater spins with an angular speed of 12 rad/s with her arms outstretched. determine the percentage change in her kinetic energy
The change in the kinetic energy of the system
An Atwood machine consists of two masses, = 6.5 and = 8.5 , linked by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.80 .
A 10.7 kg bucket of water is suspended by a very light rope wrapped around a solid uniform cylinder 0.32 m in diameter with mass 14.2 kg. Calculate the torque due to the bucket of water
A stone with a mass of 0.600kg is attached to one end of a string 0.800m long, Find the maximum speed the stone can attain without breaking the string
Compute the voltage drop along a 26 m length of copper wire which has diameter 1.665 mm and carries a 15 A current
A 20.0-kg mass is supported by two strings. The left string is 2.00 m long and the right string is 5.00 m long. What is the tension in the left side string
When water freezes, it expands about 8.73%. What would be the pressure increase inside your automobile engine block if the water in it froze
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (160 N/C) . After traveling a distance of 0.520 m in this region, the particle has a kinetic energy 0.080 J. Determine the charge of the particle.
An airplane pilot fell 355 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.3 m deep, Estimate the work done by the snow in bringing him to rest
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