Saturday
May 18, 2013

# Posts by gary

Total # Posts: 244

physics
The left ventricle of the heart accelerates blood from rest to a velocity of + 23.2 cm/s. (a) If the displacement of the blood during the acceleration is + 1.69 cm, determine its acceleration (in cm/s2). (b) How much time does blood take to reach its final velocity?

physics
A VW Beetle goes from 0 to 59.0 mi/h with an acceleration of +2.35 m/s2. (a) How much time does it take for the Beetle to reach this speed? (b) A top-fuel dragster can go from 0 to 59.0 mi/h in 0.700 s. Find the acceleration (in m/s2) of the dragster.

physics
A car is traveling along a straight road at a velocity of +32.7 m/s when its engine cuts out. For the next 1.04 seconds, the car slows down, and its average acceleration is . For the next 5.23 seconds, the car slows down further, and its average acceleration is . The velocity...

physics
A ball is thrown straight upward and rises to a maximum height of 14.6 m above its launch point. At what height above its launch point has the speed of the ball decreased to one-half of its initial value?

physics
A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 7.84 s. What is its initial velocity? Neglect air resistance.

physics
A golf ball is dropped from rest from a height of 8.40 m. It hits the pavement, then bounces back up, rising just 5.30 m before falling back down again. A boy then catches the ball when it is 1.20 m above the pavement. Ignoring air resistance, calculate the total amount of tim...

chemistry
when a ball is dropped throuh a height, its potential energy changes. Suppose all this energy gets converted into internal energyof the ball once it has stopped bouncing and the specfic heat of the vall is 0.850 j/g-k(no heat loss to the environment). Calculate the height from...

math
The "wapple" of a number is defined as the number of positive odd intergers less than that number. 1. what is the wapple of 19? 2.If the wapple of x is equal to 5, what is the wapple of x + 6?

physics
A rock is thrown vertically upward from the edge of a cliff. The rock reaches a maximum height of 20.6 m above the top of the cliff before falling to the base of the cliff, landing 6.44 s after it was thrown. How high is the cliff?

Physics
In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 9.9 m/s in 2.0 s. Assuming that the player accelerates uniformly, determine the distance he runs.

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