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Kids in a tree house lift a small dog in a basket 4.00 meter up to their house. If it takes 193 Joule of work to do this, determine the combined mass of the basket and dog?
A 1.00-kg glider attached to a spring with a force constant of 25.0 N/m oscillates on a horizontal, frictionless air track. At t = 0 the glider is released from rest at x = -3.00 cm.
A strip of doped silicon 335 µm wide contains 9.4 1022 conduction electrons per cubic meter and an insignificant number of holes. What is the thickness of the strip
A cord is used to vertically lower an initially stationary block of mass M = 14 kg at a constant downward acceleration of g/7. find the work done by the cord's force on the block
A 1300 kg car and 4940 kg truck undergo a perfectly inelastic collision. Before the collision, the car was traveling southward at 1.35 m/s, and the truck westward at 9.40 m/s. Find the velocity of the wreckage immediately after the collision. (Enter ..
A ball is tossed from an upper-story window ofa building. The ball is given an initial velocity of 8.10m/s at an angle of 19 degrees below the horizontal. It strikes the ground 6.00 s later.
Assuming the cost of energy from the electric company is $0.115/kWh, compute the cost per day of operating a lamp that draws a current of 1.65 A from a 110-V line
Imagine a spherical planet of radius R and an average density of 5.0*10^3 kg/m3; this is approximately the average density of the Earth. What is the radius of the planet
An object, at the top of a very tall building, is released from rest and falls freely due to gravity. Neglect air resistance and compute distance covered by the object between times t1 = 5.5 s and t2 = 7.9 s after it is released.
a speedboat starts from rest and accelerates at 2.01 ms2 for 7.35 s. at the end of this time the boat continues for an
Block 1, of mass m_1 = 0.500 kg, is connected over an ideal (massless and frictionless) pulley to block 2, of mass m_2. Suppose that the blocks accelerate with an acceleration of magnitude a = 0.550 m/s^2 and that coefficient of kinetic friction b..
When the lights of a car are switched on, an ammeter in series with them reads 7.52 A and a voltmeter connected across them reads 12.0 V, find the current through the starting motor
a driver sets out on a journey. for the first half of the distance she drives at the leisurely pace of 30 mih she
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