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A steel cable, ofcross-sectional area 2.70 10-3 m2, is kept under a tension of9.00 103 N. The density of steel is 7860 kg/m3 (this is notthe linear density). At what speed does a transverse wave movealong the cable?
one mole of a monatomic ideal gas is in a fixed volume container and is in thermodynamic equilibrium with its
In a period of 1.0 s, 5.01023 nitrogen molecules strike a wall of area8.0 cm2. find the pressure exerted on the wall
as a particle moves from the origin to 1i 7j m it is acted upon by a force given by 2i 6j n. calculate the work done
two resistors have resistances rsmaller and rlarger where rsmaller lt rlarger. when the resistors are connected in
q1. consider a 3.0kg ball and a 5.4kg ball in free fall.what is the net force performing on each?what is the
At the start of his race, an 84-kg runner pushes against the starting block, Determine the horizontal speed of the runner after the force is exerted for 0.32s
A 100kg elevator starts from rest. It moves upward for 4s with constant acceleration until it reaches its crusing speed of 2 m/s. What is the average power of the elevator during this time interval
an air-core solenoid consists of 200 turns of wire wound on a form that is 45 cm long and has a inner diameter of 2 cm.
A student sitting on a frictionless rotating stool has rotational inertia 0.95 about a vertical axis through her center of mass when her arms are tight to her chest. what's her new rotational velocity
a 0.10kg dart is fired horizontally at the center of a 0.80kg vertically hanging block sticking to it. the system
Suppose that a plane is traveling with a horizontal velocity of vx = +238 m/s at an altitude of y = 1053 m. determine the time required for the package to hit the ground
Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient
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