Liv has just seen a commercial advertising a fancy kind of make-up that she would like to buy. She does not have a pen or a piece of paper to write down the telephone number, so she repeats to herself over and over again while she runs into the kitchen to find the telephone. Liv is currently using the process of rehearsal to keep the telephone number active in her short-term memory.
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Write down two additional questions about earth's magnetic field that will make your presentation more informative.
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Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.
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Liv has just seen a commercial advertising a fancy kind of make-up that she would like to buy. She d...
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