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A paperweight, when weighed in air, has a weight of W = 6.9N.When completely immersed in water, however, it has a weight of Win water = 4.3 N. Find the volume of the paper weight.
Two billiard balls undergo a glancing collision. Before the collision the first ball was traveling east at 2.6 m/s, what is the speed of the first ball after the collision
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
An iron bar of mass, 0.81 kg, slides down a frictionless incline 0.39 m high. At the bottom of the incline it collides and sticks to a magnet of mass, 0.87 kg. What is the speed of the combined masses after collision.
A construct force vector F = 2.0i + 4.0j N acts on an object as it means along a straight- line path. If the object is displacement is d = 2.0i + 5.0j m calculate the work done by vector F
A 4.40 kg ball is dropped from a height of 14.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after collision
In proton-beam therapy, a high-energy beam of protonsis fired at a tumor. The protons come to rest in the tumor,depositing their kinetic energy and breaking apart thetumor’s DNA, thus killing its cells. For one patient, it isdesired that 0.10 J of pr..
A person runs 3.0 miles to the northwest (45 degrees with respect to the WE line), then 3.5 miles south. What is the persons net displacement
An electric train operates on 740 V. What is its power consumption when the current flowing through the train's motor is 1,970 A
Dolphins emit ultrasonic waves with a frequency as high as 2.5 105 Hz. What is the wavelength of such a wave in seawater at 25° C
A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +60 N·m is applied to the wheel for 18 s, Find the moment of inertia of the wheel.
An atomic spectrum contains a line with a wavelength centered at 450nm, Estimate the lifetime of the excited state
two objects m1=5.10 kg and m2=3.25 kg connected by light spring passing over a light frictionless pulley. determine the speed of each object when the two pass each other
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