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Sandhu
Questions (14)
One very long wire carries a current of 30A to the left along the x-axis.A second very long wire carries a current of 50A to the
0 answers
784 views
A 1.5 kg block is connected by a rope across a 50-cm-diameter, 2.0 kg, frictionless pulley. A constant 10 N tension is applied
3 answers
1,779 views
1.A tall pole and a short pole (both having the same diameter and mass density) are both standing straight up. Both are allowed
1 answer
653 views
1.A net force that is linearly increasing in time is applied to an object. What is time dependence of the object's kinetic
2 answers
723 views
Is it possible for the frictional force to increase the mechanical energy of a system? If so, give 2 examples with brief
1 answer
2,093 views
A ball rolls up a ramp which abruptly ends with the ramp dropping straight down. The ball launches off the end of the ramp while
3 answers
805 views
A 0.24-kg object traveling rightward at 3.5 m/s collides head-on and elastically with a 0.40-kg object traveling leftward at 2.1
2 answers
834 views
A sign is supported by a cable and a horizontal beam.The beam has a length 1.4 m and a uniform mass of12 kg.a) If the cable is
4 answers
793 views
(a).A 220-kg sleigh is pulled by one horse at constant velocity for 0.90 km on a snowy, horizontal surface, the coefficient of
1 answer
602 views
A 12.0 kg shell is launched at an angle of 55 degrees above the horizon with an initial velocity of 150 m/s. When at its highest
2 answers
868 views
A 0.150 kg frame is suspended from a coil spring, and stretches 0.050m. A 0.200 kg block is dropped from rest onto the fram from
0 answers
891 views
A particle's initial velocity is given by vox = -1.0 m/s and voy = 3.0 m/s. Its acceleration is ax = 0.50 m/s^2 and ay = -0.90
2 answers
604 views
A ball is fired from a height of 3.0 m above the ground,with a speed of 13 m/s and an angle of 22 degrees below the
3 answers
519 views
A man drops a stone into a water well on his farm. He hears the sound of the splash 3.25 s later. The acceleration of gravity is
6 answers
2,245 views
Answers (4)
hanging vertically
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Solve for velocity at 2.0s vx = v0x + axt vx = (-1m/s) + (0.5m/s2)(2.0s) vx = 0m/s vy = v0y + ayt vx = (3m/s) + (-0.9m/s2)(2.0s) vx = 1.2m/s v = 0m/s(x hat) + 1.2m/s(y hat) Calculate displacement. ∆x = v0xt + 1/2axt2 ∆x = (-1m/s)(2.0s) +
