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The ratio of brightness of two stars can be determined by a constant of 2.512 raised to the power of the magnitude difference. The formula is b1/b2 = 2.512(m2 - m1) where b1 and b2 represent the brightness and m1 and m2 refer to the magnitudes of the stars being compared. One star has a magnitude (m1) of -1.2, and another star has a magnitude (m2) of +0.8. What is the ratio of brightness of these two stars?
b1 / b2 = blank ?
100 volts of ac are put across a 100-turn transformer primary. What is the power in each coil? What is the ac current drawn by the primary coil?
Two equal point charges (q = +4.50 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.390 meter. Find the speed of the test charge when it reaches the center of square
If the modulus of rigidity of the shaft material G is 90 GPa, calculate the maximum shear stress and the angle of twist in degrees
A particle moves in a circle of radius 71 m with a constant speed of 26 m/s. What is its angular velocity in radians per second about the center of the circle
A box of mass 4.75 kg is hanging from the end of a vertical rope of negligible mass. What is the magnitude of the force
An LC circuit with a 4.60 pF capacitor oscillates in such a manner as to radiate at a wavelength of 3.40 m. What inductance is in series with the capacitor
In the operating room, anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery. What is the magnitude of the magnetic field that the spectrometer uses
Bar BDE is attached to two links AB and CD. Knowing that at the instant shown link AB rotates with a constant angular velocity of 3 rad/s clockwise, determine the acceleration
A young hockey player stands at rest on the ice holding a 1.3 kilogram helmet. Calculate the mass of the hockey player
A car of mass 1200 kilogram is traveling at 28.0 m/s. Determine the retarding force acting on the car
If a parallel mirror He-Ne laser had a homogeneous line shape with v=1.5GHz, and small signal peak coefficient of .001/cm length=100cm and reflectance's 100 percent and 97 percent, how many longitudinal modes would initially contribute to the laser o..
Construct a figure illustrating a case in which there are three β-stable nuclei with the same even-A value.
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