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An acoustic signal is composed of the first three harmonics of a wave of fundamental frequency 470 Hz. If these harmonics are described, in order, by cosine waves by amplitudes of 0.710, 0.170, and 0.790, what is the total amplitude of the signal at time 0.414 seconds? Suppose the waves have phase angles n = 0.
Here in Boulder, normal atmospheric pressure is NOT 1 atm (that's down at sea level) Let's call it 0.850 atm on a given day. what is the amplitude of the pressure wave
A bicyclist on a horizontal plane starts from rest and begins to pedal. The wheel of radius r = 0.345m has a constant angular acceleration of ? = 9.35rad/s2, What is the final angular velocity of the wheel
A parallel plate capacitor of capacitance 8.0 µF has the space between the plates filled with a slab of glass with ? = 2.6. Find the potential difference after the glass is removed
question how many electrons must be removed from each of two 4.6-kg copper spheres to make the electric force of
Two objects moving toward each other collide and rebound. Determine the change in kinetic energy of the smaller object
The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2, The potential on the outer surface of the membrane is +52.2 mV greater than that on the inside surface. How much charge resides on the outer surface
One billiard ball is shot east at 2.8 m/s. A second, identical billiard ball is shot west at 1.2 m/s. Estimate the speed and direction of the first ball after the collision
A highway curve has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?
Vi = 10-3 m3 chamber of a gas bottle contains some argon gas (atomic weight = 0.040 kg/mole) at a pressure of 104 Pa and a temperature of 22° C. Illustrate what is the number density of atoms in this chamber?
A 2.6-kg sphere of radius 35 cm is initially rolling on a flat surface with a speed of v = 0.40 m/s. Determine the force F and the distance l
An object falls a distance h from rest. If it travels 0.5h inthe last 1.00s find the time and the height of its fall
A popular amusement park ride looks like a huge cylinder of radius 2.3 m, where people stand up along the vertical walls on top of a floor which can drop away. find the minimum rotations per second the cylinder must make
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