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a 0280 kg croquet ball makes an elastic head-on collisionwith a second ball initially at rest the second ball moves
an atomic nucleus initially movingat 420ms emits an alpha particle in the direction of its velocityand the remaining
in a house the temperature at the surface of a window is 25 degreescelsius the temperature outside at the window
a 030 kg mass attached to the end of a 060 m string iswhirled around in a circular horizontal path if the
two point charges are on the y-axis a 450 muc charge is located at y125cm and a -224muc charge is located at y180 cm
two infinte parallel plates separated by a distance sare at potentials 0 and v0a use poissons equation to find the
a 0500 kg ball falls directly down onto concrete hitting it with a speed of 125 ms and rebounding directly upward with
the concrete wall of a building is 014 m thick thetemperature inside the building is 22degc while the
a transformer has 400 turns in the primary which is connected to 120v rms its secondary coil is tapped at three places
to empty a flooded basement a water pump must do work liftthe water at a rate of 200 kw if the pump is wired to a
an object of a mass of 8 kg revolves in a circle of a radius of 3 mattached by a massless string to the center there is
a balloon whose volume is 500m3 is to be filledwith hydrogen at atmospheric pressure if the hydrogen isstored in
a pulsar is a rapidly rotating neutron star that continuouslyemits a beam of radio waves in a searchlight manner each
a container holds a gas consisting of 105 moles of oxygenmolecules one in a million of these molecules has lost a
a 0145kg baseball pitched at 390 ms is hit on a horizontal linedrive straight back toward the pitcher at 520 ms if the
a baseball is thrown up from ground level at a speed of 256ftswhat is the acceleration at the highest point in fts2how
an 830kg student starting from rest slides down a 118m highwater slide on the way down friction a nonconservative
in a period of 10 seconds 50 x 1023 nitrogen moleculesstrike a wall of area 80 cm2 if the molecules move at 300ms and
a car is parked on a cliff overlooking the ocean on an inclinethat makes an angle of 220deg belowthe horizontal the
a 100 kg cannon at rest contains a 10 kg connon ball when fired the cannon ball exits the cannon with a speed of 90ms
a planets moon travels in an approximately circular orbit ofradius 90 107 m with a period of 6 h 34 min calculate the
a person standing on a bridge 120m above a river drops a 250g rocka what is the rocks potential energy before it
a force of 25 n at an angle of 37 degrees with thehorizontal pulls a 10 kg crate along a horizontal surfce ofdistance
a container of volume 052 m3 contains 31 mol of argon gas at 30degc assuming that argon behaves as an idealgas find the
a garage lift has input and liftoutputpistons with diameters of 10cm and 30cm respectively the lift isused to hold up a