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Consider a double star system. The stars are held together as a system by the gravitational force between them. The star #1 has the mass m1 and the star #2 has the mass m2. Assume that each star undergoes a uniform circular motion about the center of mass of the system. If the stars are always at a fixed distance of D apart, what is the period of orbiting (in seconds) for each of them? Justify your answer with appropriate diagrams and equations.
In 1.00 second an automatic paintball gun can fire 15 balls, each with a mass of 0.113 g , at a muzzle velocity of 90.0 m/s . Calculate the average recoil force experienced by the player
a dentists drill starts from rest. after 2.50 s of constant angular acceleration it turns at a rate of 2.1 104 revmin.
Two satellites are in circular orbits around a planet that has radius 9.00*10^6 m. One satellite has mass 77.0kg , What is the orbital speed of this second satellite
Hakeem throws a 10.50 g ball straight down from a height of 2m. The ball strikes the floor at a speed of 7m/s. What was the initial speed of the ball? Presume that air resistance is negligible.
A 0.62 kg glider slides frictionlessly on an 3-m air track inclined at an angle of 12 degrees. The glider is connected to a lightweight string which passes over a low-friction pulley at the top of the air track. The other end of the string is conn..
Compare and contrast one jurisdiction which prohibits post-employment covenants in restraint of a trade, profession or occupation with one which attempts to regulate rather than ban such restrictive covenants.
an airplane has a mass of 32000 kg and takes off under the influence of a constant net force of 36500 n. what is the
question a heat engine utilizes a heat source at 580 degrees celsius and has an ideal carnot efficiency of 28 to
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat.
A railroad train is traveling at 30 m/s. The locomotive whistle emits a loud tone at frequency 440 Hz. what is the frequency of the sound heard by a stationary listener in front of the locomotive
A basketball player makes a jump shot. The 0.603 kg ball is released at a height of 2.07 m above the floor with a speed of 7.19 m/s. What is the work done on the ball by air resistance
Explain why the VOLTS/DIV knob of an oscilloscope doesn't have to be calibrated and the TIME/DIV button must be calibrated when measuring time-constants
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