Physics, 10.12.2019 04:31 patricia1964
Ablock of mass m is sliding on a frictionless, horizontal surface, with a velocity vi . it hits an ideal spring, of spring constant k, which is attached to the wall. the spring compresses until the block momentarily stops, and then starts expanding again, so the block ultimately bounces off (see example 5.6.) write down an equation of motion (a function x(t)) for the block, which is valid for as long as it is in contact with the spring. for simplicity, assume the block is initially moving to the right, take the time when it first makes contact with the spring to be t = 0, and let the position of the block at that time to be x = 0. make sure that you express any constants in your equation (such as a or ω) in terms of the given data, namely, m, vi , and k.(b) sketch the function x(t) for the relevant time interval.
Answers: 2
Physics, 22.06.2019 01:10
Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.
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Physics, 22.06.2019 09:00
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.
Answers: 3
Ablock of mass m is sliding on a frictionless, horizontal surface, with a velocity vi . it hits an i...
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