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Star A and B have bolometric magnitudes ma = 5 and mb = 10. If both stars have same absolute magnitude, M, what's the ratio of their distances?
An antifreeze solution is made by mixing ethylene glycol (? = 1116 kg/m3) with water. Suppose the specific gravity of such a solution is 1.06. determine the volume percentage of ethylene glycol in the solution
Cliff and Will are carrying a uniform 2.0m board of mass 74kg. Will is supporting the board at the end while cliff is 0.6m from the other end, Find the normal forces exerted by Cliff and Will
Tarzan swings on a 34.0-m-long vine initially inclined at an angle of 31.0° with the vertical, What is his speed at the bottom of the swing if he starts from rest
A 1350 kg car accelerates uniformly from 35.5 km/h to 75.5 km/h over 250 m. Determine the time taken for the car to accelerate
Typically, a tennis ball hit during a serve travels away at about 47 m/s. what is the magnitude of the change in its momentum (in kg*m/s) on leaving the racket
A 212-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. evaluate the tension in the rope
A box weighing 300N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.2° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.540, how long does it take to mov..
In a tennis serve, a 0.070 kg ball can be accelerated from rest to 36 m/s over a distance of 0.75 m. Find the magnitude of the average force exerted by the racket on the ball
The critical angle of a certain piece of plastic in air is ?c = 37.3º, what is the critical angle if the piece of plastic is immersed in water
positive freedom is the ability to do what one should do. negative freedom is the ability to do what one should not
question1a 408 kg mass is brought close to a second mass of 110 kg on a frictional surface with coefficient of friction
You have a string with a mass of 0.0141 kg. You stretch the string with a force of 9.09 N, giving it a length of 1.81 m. What is the wavelength of the standing wave
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