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A mass of 20g is attached to a spring, and undergoes simple harmonic motion with a period of T=0.7 s. The total energy of the system is E=2.5 mJ. What is the force constant of the spring? What is the amplitude of the motion?
A photovoltaic cell can produce an average of 40 Wm^-2 (Watts permeter squared) of electrical energy if it is directly facing thesun at the equator.
The secondary colors, cyan, magenta, and yellow, can each be obtained by subtracting a color from white light. Which primary color is subtracted in each case
A crane is required to pull up a load of building supplies from the ground to a height of 90 m at a constant velocity. Find the power output required of the motor that pulls the cable up
A solar concentrating heat exchanger system directs sunlight onto a long straight pipe. The pipe receives heat from sunlight at the rate of 153.616 Btu/hr per foot of length, find the rate of entropy production in this solar concentrator
Capacitors C1 = 4.0 µF andC2 = 2.0 µF are charged as aseries combination across a 60 V battery.The two capacitors are disconnected from the battery and from eachother.
Calculate the point between Uranus and the Sun at which an object can be placed so that the net gravitational force exerted on it by these two objects is zero
A 1.00 -diameter vat of liquid is 2.90 m deep. The pressure at the bottom of the vat is 1.50atm. What is the mass of the liquid in the vat
How fast will the automobile be traveling at that instant.
A long wire is known to have a radius greater than 5.2 mm and to carry a current that is uniformly distributed over its cross section, What is the radius (in mm) of the wire
Force F = (-1.0 N) + (1.0 N) acts on a particle with position vector r = (5.0 m) + (5.0 m). What is the torque on the particle about the origin
Scientists want to place a 3800.0 kg satellite in orbit around Mars. What speed should the satellite have to be in a perfectly circular orbit
a parallel plate capacitor has square plates 12 cm on a side separated by 0.10 mm of plastic with a dielectric constant
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