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At the local playground, a 16 kilogram child sits on the end of a horizontal teeter-totter, 1.5 meter from the pivot point. On the other side of the pivot an adult pushes straight down on the teeter-totter with a force of 95 Newton. Find in which direction does the teeter-totter rotate if the adult applies the force of a distance
(a) 3.0 meter,
(b) 2.5 meter, or
(c) 2.0 meter from the pivot?
A skilled skier knows to jump upward before reaching a downward slope. Consider a jump in which the launch speed V0= 12.5 m/s, how far below the launch level does the skier land
A 2000-kg car moving with a speed of 20 m/s collides with andsticks to a 1500kg car at rest at a stop sign. Show that because momentum is conserved in the rest frame, momentum is also conservedin a reference frame moving with a speed of 10 m/s in the..
A bus was initially traveling with a velocity of 50 km/hr east. Later it was observed traveling with a velocity of 100 km/h north. What was the change in velocity of the bus
The green block(B) has a mass of 10.00kg and is moving to the left at a speed of 3.70m/s. What should the velocity of the red block be in order to have the two blocks move to the right with a speed of 1.30 after the collision
An inductor has the form of a coil with 1750 turns and a diameter of 1.3 mm. The inductor is placed in a magnetic fieldperpendicular to the plane of the coil and increasing at a rate of0.31 T/s.
A 1.80-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 2.30sin(2?t), Find the angular frequency of the driven system
q. a paratrooper pilot fell 360 m after jumping without his parachute opening. he landed in a snow bank creating a
A factory worker moves a 23.0kg crate a distance of 4.90m along a level floor at constant velocity by pushing horizontally on it. What magnitude of force must the worker apply
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. Calculate the charge density of the air
An airplane with a speed of 76.6 m/s is climbing upward at an angle of 49.5 ° with respect to the horizontal, Relative to the ground, determine the angle of the velocity vector of the package just before impact
the surface of the sun has a temperature of about 5800 k. if the radius of the sun is 7 x 10^8 m, determine the power output of the sun
A 5.0 Ω resistor is connected in series with a10.0 Ω resistor. This combination is thenconnected in parallel with a 7.5 Ω resistor. Thethree resistor network is then connected in series with a15 Ω resistor. T
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