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Question: The most massive flying dinosaur was the pterosaur. The average mass for a pterosaur has been estimated from skeletons to be between 80.0 kg and 120.0 kg. The wingspan of a pterosaur was greater than 10.0 m. Suppose two pterosaurs with masses of 80.0 kg and 120.0 kg sit on the middle and the far end, respectively, of a light horizontal tree branch. The pterosaurs exert a net counterclockwise torque of 9.4 kN•m about the end of the branch that is attached to the tree.
Question 1: What is the length of the branch?
Please show all work and steps and equations to determine the length of the branch.
A 1650-kg car is travelling at 31.2 m/s. How fast must a 91.0-kg bicycle and rider be travelling to have the similar kinetic energy as the car.
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of ?3.20 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b)What is the velocit..
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 53.5 m/s and returns the shot with the ball traveling horizontally at 39.0 m/s in the opposite direction. What work does the racquet do on the ball
Two geekie physics students with a combined mass of 122 kg jump into their old car to run out for some late night pizza. What is mass of the car
What multiple of the time constant τ gives the time taken by an initially uncharged capacitor in an RC seriescircuit to be charged to 97.6% of its final charge?
In an L-R-C series circuit, the rms voltage across the resistor is 31.7V , across the capacitor it is 89.2V, What is the rms voltage of the source
Is the center of the mass of the pendulum-ball system at the center of the ball? If not, where and how is the center of mass located
A plumb bob is suspended from a point in the Northern hemisphere at a latitude of 45o. Find the angle this plumb bob makes
An automobile of mass 1420 kilogram traveling at 20 m/s is at the foot of a hill that rises 120 meter in 2 kilometer. Obtain the average power delivered by the automobile engine
A 1.90 kg ball is attached to the bottom end of a length of fishline with a breaking strength of 10 lb (44.5 N). At what angle (measured from the vertical) will the fishline break
A car with its parking brake on starts sliding down an extremely slippery icy h=6 m high embankment into a level snowy muddy field with a coefficient of kinetic friction of 0.8
The greatest height reported for a jump into an airbag is 99.4 m by stuntman Dan Koko. In 1948 he jumped from rest from the top of the Vegas World Hotel and Casino. determine how fast he would have been traveling on impact had air resistance been a..
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