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1600 mole of ammonia gas is placed in a 1600cm3 box at 250 degrees the box is then heated to 500k which causes the
a car is normally capable of an acceleration of 3ms2 if it is towing a trailer with half as much mass asthe car itself
two evacuated bulbs of equal volume are connected by a tube of negligible volume one bulb is placed in a 200k
a 13 g bullet traveling 230 ms penetrates a 20 kg block of wood and emerges going 170 ms if the block is stationary on
a rocket-powered hockey puck has a thrust of 100 n and a total mass of 210 kg it is released from rest on a
a 0430 kg block is attached to a horizontal spring that is at its equilibrium lenght and whose force constant is 200 nm
a 15 g bullet strikes and becomes embedded in a 110 kg block of wood placed on a horizontal surface just in front of
an electronic flash attachment for a camera produces a flash by using the energy stored in a 860-mu f capacitor between
a gun is fired vertically into a 140 kg block of wood at rest directly above it if the bullet has a mass of 210 g and a
a certain mass when hung from a certain spring causes the spring to stretch by an amount h compared to itsequilibrium
a grappling hook attached to a 15-m rope is whirled in acircle that lies in the vertical plane the lowest point on
when 378 g of nonvolatile solute is dissolved in 3000 g ofwater the freezing point depression is 0646 o c calculate the
your task in physics lab is to make a microscope from two lensesone lens has a focal length of 12 rm cm the other a
an object initially at rest breaks into two pieces as the result of an explosion one piece has twice the kinetic energy
the interior of a house is maintained at 20 degrees celsiuswhile the outdoor temperature is -10 degrees celsius
the mass of the moon os 731022 kg and its radius is 174106m what is the acceleration due to gravity on the surface of
a toaster uses a heating wire when the toaster is turned on at 20 degree c the initial current is 154 a a few seconds
when a light bulb is connected across the terminals of abattery the battery delivers 24w of power to the bulb a
a 055 kg book slides on ahorizontal table the kinetic friction force on the book hasmagnitude 18 na how much work is
two wires are identical except that one is aluminum and one is copper the aluminum wire has a resistance of 0874 ohm
there are four charges each with a magnitude of 20muc two are positive and two are negative the charges are fixedto the
a poorly tuned yugo can accelerate from rest to a speedof 28 ms in 20 sa what is the average acceleration of the carb
an electrically neutral model airplane is flying in a horizontalcircle on a 30m guideline which is nearly parallel to
a hockey puck is hit on a frozen lake and starts moving with aconstant speed of 12 ms five seconds later its speed
a 90 ohm resistor and a 60 ohm resistor are connected in series with a power supplya the voltage drop across the 60 ohm