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The height of a helicopter above the ground is given by h = 3.20 t3, where h is in meters and t is in seconds. At t = 1.95s, the helicopter releases a small mailbag. How long after its release does mailbag reach the ground.
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 20000 V. The speeds of the electrons are quite large.
Suppose a 1.83-g nugget of pure gold has zero net charge. What would be its net charge after it has 1.92 % of its electrons removed?
How many electrons should be transferred from the plate. When you enter your answer, leave off the unit rm dB.
A 4 cm diameter loop with resistance 0.18 Omega surrounds a 2 cm diameter solenoid. The solenoid is 15 cm long, has 100 turns, and carries the current shown in the graph. A positive current is cw when seen from the left.
what speed does boxcar have after 10 seconds.What is the object's displacement Dx.
A person walks 25.0° north of east for 2.70 km. How far would the person walk due north and due east to arrive at the similar location.
State the maximum height in terms of a, t_1, and/or g. Note that in this problem, g is a positive number equal to the magnitude of the acceleration due to gravity.
The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.
What is the resultant vector, R, obtained by adding vectors C and D? Express the magnitude to three significant figures. Express the angle to one decimal place.
A 3.60 long, 420 steel beams extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 72.0 construction worker stands at the far end of the beam. What is the magnitude of torque about the..
How far above the aim is the point
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