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There is a glass filled with 20cm of water and on top alayer of 30cm of oil, that exactly weights 0.700Newton. What is the total preassure at the bottom of the glass?
A rock of mass m = 2 kg is tied to a string of length L = 1.9 m and is twirled in a vertical circle. The speed v of the rock is constant; that is, it is the same at the top and the bottom of circle.
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 34.3m/s2, Find the maximum height ymax reached by the rocket
A drinking fountain projects water at an initial angle of 50 degrees above horizontal Water reaches maximum height of 0.150m above point of exit. Calculate gauge pressure in feeder pipe at this point
A uniform electric field (thatis, ~E is the same at every point) exists in a region between oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface ofthe opposite plate, 2..
An antique phonograph turntable has a kinetic energy of 2.70×10?2J when turning at an angular velocity of 48.0 rev/min, What is the moment of inertia of the turntable about the rotation axis
You have a 56.9-mF capacitor initially charged to a potential difference of 10.1 V. You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V.
An electron is accelerated through 1.65 X 10^3 V from rest and then enters a uniform 1.30-T magnetic field. What is the minimum magnitude of the magnetic force this particle can experience
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s.What is the frequency heard by the observer . What must be the result have been for the horizontal speed.
A horizontal 5-cm diameter water jet with a velocity of 18 m/s impinges normally upon a vertical plate of mass 1000 kg. The plate rides on a nearly frictionless track and is initially stationary. When the jet strikes the place, the plate begins to..
A person can survive a feet-first impact at the speed of about 12 m/s (27 mi/h) on concrete; 15 m/s (34 mi/h) on soil; and 34 m/s (76 mi/h) on water. Why are there different values for different surfaces.
Where can a third charge be placed. To what common temperature must the two pieces be heated in order that the cylinder just fit over the piston.
A parallel-plate capacitor is made by placing polyethylene ( =2.3) between two sheets of aluminum foil. The area of eachsheet of aluminum foil is 410 cm2, and the thickness ofthe polyethylene is 0.5 mm.
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