Magnitude of the net force acting on the ball problem
When a 58 g tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 38 cm. What is the magnitude of the net force acting on the ball.
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The solubility of KNO3 is 155g per 100g of water at 75Cand 38.0g at 25C. What mass in grams of KNO3 will crystallize out of the solution if exactly 750g of its saturated solution at 75C is cooled to 25C.
Design the suspension of an automobile such that the maximum vertical acceleration felt by the driver in less than 2 g at all speeds between 40 and 50 mph while traveling on a road.
Compute the probability that both players obtain the same number of heads. Compute the probability that player A gets a head on a toss earlier than player B does (e.g., A gets a head on his second toss, but B's rst head is on his third toss).
A piston cylinder holds 2 kg of refrigerant 134a at 320 kPa and a quality of .9 while the piston is resting on a stop (state 1). Determine the heat transfer durng the first process 1 to 2 in kJ.
Find the distribution function for the system lifetime T (hint: write an expression for the event that the system has failed by time t in terms of X1 and X2).
The initial velocity of the kit is 12 m/s at an angle of 61° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height between the two climbers?
One of the requirements for tennis balls to be used in an official competition is that, when dropped onto a rigid surface from a height of 100 in. Determine the range of coefficients of restitution of the tennis balls satisfying this requirement.
If equal, rigidspheres are arranged in a simple cubic lattice in the usual way,i.e., in such a way that they touch each other, what fraction of the corresponding solid will be empty space?
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