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A spring is hanging down from the ceiling has an object of mass m is attached to the free end of the spring. The object is pulled down, released, and allowed to oscillate. T, the time required for one complete up-and-down oscillation, is given by the equation T = 2p(m/k)1/2. What is the unit for k, the spring constant, if the unit for T is tocks, and the unit for m is slugs?
point a is at position 4j -3kcm. point b is at position -3cm k. point c is at position 3i -2j 5k cm. point d is at
Two charges, q1 and q2, are separated by a distance, r, and exert a force, F, on each other. What will the new force be if:
A pendulum has a period of 0.80s on Earth. What is its period on Mars, where an acceleration of gravity is about 0.37 that on Earth.
a box that weighs 10lbs is pushed along a surface by a variable force f0.1t0.5 lbs. what is the velocity in fts of the
Light rays in a material with index of refrection 1.29 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence
An air conditioner connected to a 120 V rms ac line is equivalent to a 12.7 ? resistance and a 1.53 ? inductive reactance in series. estimate the impedance of the air conditioner
A charge of -5.0 nC is uniformly distributed around a ring of radius 1.5 m that lies in the yz plane with its center at the origin, Calculate the work done in moving the point charge to the origin
a 6.6 cm diameter pipe gradually narrows to 4.0 cm. when water flows through this pipe at a certain rate the gauge
the distance between the objective lens and the eyepiece of a microscope is 20 cm. if the eyepiece has a magnification
A hunter aims directly at a target (on the same level) 84.2m. If the bullet leaves the gun at a speed of 193 m/s, by how much will it miss the target.
Electrons can be “boiled off” of a wire by heating the wire to sufficiently high temperature (typically well over 1000? C). Typically the electrons leave the wire with a fairly low speed which can be approximated as zero
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk
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