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An object has initial velocity in the upward direction, a final velocity in the downward direction and undergoes constant acceleration. What can you say about it's average acceleration?
twin brothers each of mass 50 kg sit in a symmetric canoe of mass 40 kg. each boy sits 1.5m from the center of the canoe as they toss a basketball(mass= .60kg) back and forth. how much does the center of canoe move as the ball moves from one brothe..
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. What is the total mass of the wire
A 0.15 kg ball is placed in a shallow wedge with an opening angle of 150.For each contact point between the wedge and ball, find out the force exerted on the ball. Assume the system is frictionless.
Two scales on a voltmeter measure voltages up to 21.0 and 30.7 V, respectively. Determine the coil resistance
the west antarctic ice sheets some 0.83 million km2 and only 6 of the total antarctic ice surface have an average
In a new (inelastic) collision, the same two bumper cars with the same initial velocities now latch together as they collide. What is the final speed of the two bumper cars after the collision
a 4.0 g string 0.39 m long is under tension. the string vibrates at 600 hz in the third harmonic. the wavelength of the
An alpha particle (q = 2e and m = 6.64e-27 kg) is accelerated from rest through a potential difference of 1.2e+5 volts. Find the speed of the particle after being accelerated
a 0.646 m string is clamped at both ends. if the lowest standing wave frequency in the string is 326 hz what is the
an airplane starts from rest and accelerates at a constant 3.00 m/s^2 for 30.0 s before leaving the ground. how fast was the airplane going when it took off
The deltoid muscle connects the shoulder blade to the upper arm (humerus), and so contraction of the deltoid raises the arm, Find the force the shoulder joint exerts on the humerus
a particle of mass m is confined to a tube of length l.a use the uncertainty principle to estimate the smallest
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