Physics, 21.11.2019 18:31 groundcontrol
Determine the approximate density of a high-leaded brass that has a composition of 61.5 wt% cu, 33.5 wt% zn, and 5.0 wt% pb. the densities of cu, zn, and pb are 8.94, 7.13 and 11.35 g/cm3, respectively.
Answers: 2
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World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s
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Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?
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Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative
Answers: 3
Determine the approximate density of a high-leaded brass that has a composition of 61.5 wt% cu, 33.5...
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