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A sample of an unknown substance appears to weigh 15.3 N in air and 9.16 N when immersed in a solvent with density 1.20 g/mL.
Find the volume of the sample (in mL):
Find the density of the sample (in g/mL):
When point charges q1 = +6.8 ?C and q2 = +5.3 ?C are brought near each other, Determine the distance between the charges
question1car a is moving with a constant speed of 10ms and passes car b which is at rest. ten second later the latter
Two cars travel in the same direction along a straight highway, How far must the faster car travel before it has a 15-min lead on the slower car
a thin rod, of length L = 1.9m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball is attached to the other end. find the initial height of the ball
The blades on a lawn mower require 5 revolutions to turn at a rate of 60 revs/sec. determine the angular acceleration of the blades
A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North. 29.8 seconds after it is released, What is the ratio of the magnitude of E2 to the magnitude of E1
A total charge of 14 mC passes through a cross-sectional area of a nichrome wire in 2.8 s. If the number of charges that pass through the cross-sectional area during the given time interval doubles, what is the resulting current
A gas with initial conditions (P,V,T)i expands isothermally until the final volume=8.192 times the initial volume, find the ratio of the final pressure to the intial pressure
While you are sitting on a chair at the edge of a 1.8 m deep swimming pool, your eyes are 1.7 m above the surface of the water. What is the horizontal distance between you and the acorn?
The power output of a car engine running at 2900 rpm is 300 kW. How much work is done per cycle if the engine's thermal efficiency is 10.0%
A certain commercial mass spectrometer (Fig. 28-12) is used to separate uranium ions of mass 3.92 x 10-25 kg, calculate the thermal energy (in J) produced in the cup in 1.07 h
Two bumper cars moving on a frictionless surface collide elastically. What is the speed of the first bumper car after the collision
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