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given heat 1000 j is input to a carnot engine at 300 degrees celsius and waste heat rejected at 10 degrees c find the
nbspa 1100 kg car is moving at a speed of 400 msa what is kinetic energy of the carb how much work is required to bring
a solution has a hydronium-ion concentration of 10 x 10-5 mol per liter what is the ph of this solution is this
a 0800-kg block oscillates on the end of a spring whose spring constant is k 420 nm the mass moves in a fluid which
a simple pendulum is 050m long at t0 it is released from rest starting at an angle of 10 degreesignoring friction what
the intensity of sunlight hitting the earth is about 1300 wm2a find amplitude of the electric fieldb find amplitude of
what is the magnitude of the free-fall acceleration of a ball mass m due to the earths gravity at an altitude of 475 r
a laser that produces a spot of light that is 120 mm in diameter is shone perpendicularly on the center of a thin
a ray of light strikes a flat 200-cm-thick block of glass n 2 at an angle of 87deg with respect to the normal see
a goldfish is swimming inside a spherical bowl of water having an index of refraction n 1333 suppose the goldfish is p
object o1 is 137 cm to the left of a converging lens with a 119-cm focal length a second lens is positioned 100 cm to
it is fairly easy to produce a static magnetic field of 0050 t in the lab if an em wave could be produced with maximum
an object is placed 200 cm from a first converging lens of focal length 105 cm a second converging lens with focal
each of the three helicopter rotor blades shown in fig 10-67 is 520 m long and has a mass of 195 kg the rotor is
consider an electron in a hydrogen atom which is 0050 nm from the proton in the nucleusa what electric field does the
work of 1500 j is done on an ideal gas but the internal energy increases by only 800 j what is the amount and direction
a cylinder of mass100kg rolls without slipping on a horizontal surfacea at the instant its center of mass has a speed
a playground merry-go-round of radiusr200m has a moment of inertiai255kgmiddotm2and is rotating at90revmin about a
work of 600 j is done by stirring and insulated beaker containing 100 gm of waterwhat is the internal enery of the
a spherical weather balloon is filled with hydrogen until its radius is 340 m its total mass including the instruments
a large storage tank open to the atmosphere at the top and filled with water develops a small hole in its side at a
a child fires a slingshot pellet into the air with a speed of 66msa how high above the starting level is it when the
if 600 j of heat are added to 50 g of water initially at 20 degrees chow much energy is this in calorieswhat is the
a 1110-kg car traveling initially with a speed of 250 ms in an easterly direction crashes into the rear end of a
a proton moving at 5 x 104 ms horizontally x direction enters a region where a magnetic field of 12 t is present