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a bronze cannon ball with a mass of 35 kg is fired vertically from a small cannon and reaches a height of 250 m if the
a gas cylinder of 550l volume contains n2g ata pressure of 325atm and 230c what mass of neg must be introduced into
the drawing shows a skateboarder moving at 678 ms along a horizontal section of a track that is slanted upward by 516
how many grams of ice would be melted by the energy obtained as 236 g of water vapor is condensed at 100 degrees
a satellite circling the earth has an average power consumption of 3500 w assuming 57 efficiency for conversion of
a possible spacecraft design uses a solar sail made of aluminized plastic as sunlight reflects off the sail radiation
consider a 1000 ml of buffer solution that is 050 m ch3cooh and 050 m nach3coo what is the ph of the solution after 100
a 700 lb floating platform is at rest when a 200 lb crate is thrown onto it with horizontal speed v0 12 fts once the
the 0 particle has a mass of 4977 mevc2 it decays into a and each having mass 1396 mevc2 following the decay of a 0
a solution has a hydronium-ion concentration of 10 x 10-5 mol per liter what is the ph of this solution is this
assume that a 6 volt energy source is in a circuit that has a resistance of 10ohms determine the current and power
a person pushes a 160 kg shopping cart at a constant velocity for a distance of 220 m she pushes in a direction 260deg
at a given instant an 56 mh inductor stored an energy of 89 microja what is the current in the inductor at this
the electric potential at the center of a 500 cm radius metallic sphere is zero volts the sphere is surrounded by a
a 50 newton horizontal force pushes a 10kg mass sitting on a horizontal surface additionally the horizontal surface
a charged line extends from y 250 cm to y -250 cm the total charge distributed uniformly along the line is -850 nca
a rescue helicopter lifts a 60 kg person straight up by means of a cable the person has an upward acceleration of 070
two thin rectangular sheets 025 m 051 m are identical in the first sheet the axis of rotation lies along the 025-m side
grinding wheel is initially at rest a constant external torque of 472 nmiddot m is applied to the wheel for 188 s
an extreme skier starting from rest coasts down a mountain that makes an angle 250deg with the horizontal the
a using faradays law derive the self-inductance per unit length of a long ideal solenoid with n turns per unit length
the lower boundary of the plate is defined by y 0650 x2 the plate has a mass of 370 kg find the moment of inertia of
a proton travels through uniform magnetic and electric fields the magnetic field is in the negative x direction and has
a projectile is fired in such a way that its horizontal range is equal to 2 times its maximum height what is the angle
series circuit contains a resistor and one unknown element which could be a resistor a capacitor or an inductor a 115