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A 0.45-kg crow lands on a slender branch and bobs up and down with a period of 1.1 s. An eagle flies up to the same branch, scaring the crow away, and lands. The eagle now bobs up and down with a period of 3.6 s. treating the branch as an ideal spring; discover (a) the effective force constant of the branch and (b) the mass of the eagle.
A playground swing at its highest point during a child's play is 3.0 meters above the ground, Determine the torque exerted by gravity on a child on the swing when the swing is at the highest point of its motion
A horizontal desk surface measures1.5 m x 1.0 m. If the Earth's magnetic field has magnitude 0.40 mT, find what is the magnetic flux through the desk surface
while exploring the projectiles from newtons mountain is it possible to launch a projectile with just enough velocity
Assume that the value of n in a radioactive transition in hydrogen changes only with unity, as is suggested by the correspondence principle. Estimate for what range of values of n the photon that is emitted will have wavelengths in the visible range ..
an electron is a subatomic particle m 9.11x10-31 kg that is subject to electric forces. an electron moving in the x
A Force F of magnitude 2.04 N is applied to a block of mass1.00 kg in the opposite direction to the normal force on an inclinethat is angled at 37.1 degree to the horizontal. What is the value of the coefficient of static friction
a car starts from the bottom of a hill with a slope of 10 degrees and travels with a constant velocity of 20m/s when its engine fails. Calculate the total time the car is in motion
in a certain region of space electric field is along the z-direction throughout. the magnitude of electric field is
a satellite is in low earth orbit but for one reason or another its orbit is decaying. this means the satellite is
a 2.0 meter long string that has a mass of 24.0 grams is under 45 n of tension. a sinusoidal wave with an amplitude
A particle of charge +12 uC and mass 3.8 x 10^-5 kg is released from rest in a region where there is a constant electric field of +480 N/C
One of the fragments falls straight downward as though it had been released from rest. Explain how far from the gun does the other fragment land
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