Physics, 01.10.2019 01:10 belindajolete
Learning goal: to understand the basic concepts of projectile motion. projectile motion may seem rather complex at first. however, by breaking it down into components, you will find that it is really little different from the one-dimensional motions that you may already have studied. one of the most often used techniques in physics is to divide two- and three-dimensional quantities into components. for instance, in projectile motion, a particle has some initial velocity v? . in general, this velocity can point in any direction in the xyplane and can have any magnitude. to make a problem more manageable, it is common to break up such a quantity into its x component v? x and itsy component v? y. imagine that the ball on the left is given a nonzero initial velocity in the horizontal direction, while the ball on the right continues to fall with zero initial velocity. what horizontal speed vx must the ball on the left start with so that it hits the ground at the same position as the ball on the right?
Answers: 3
Physics, 21.06.2019 16:10
If two metal balls each have a charge of -10^-6 c and the repulsive force between them is 1 n, how far apart are they? (coulomb's constant is k = 9.0x 10^9 n-m^2/c^2? 9.5 m 9.0 mm 9.5 cm 0.9 m .
Answers: 3
Physics, 22.06.2019 05:50
Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.
Answers: 2
Physics, 22.06.2019 10:00
Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
Answers: 1
Learning goal: to understand the basic concepts of projectile motion. projectile motion may seem ra...
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