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a hollow spherical shell with mass 165 rolls without slipping down a slope that makes an angle of 400 with the
air is flowing steadily through a cooling section where it is cooled from 30 degc to 15 degc at a rate of 025 kgs if
a textbook of mass 210 rests on a frictionless horizontal surface a cord attached to the book passes over a pulley
consider a wet banked roadway where there is a coefficient of static friction of 030 and a coefficient of kinetic
three capacitors c1 25 microf c2 75 microf and c3 13 microf are connected as shown with a battery of voltage v 18 v
a 10 ohm resistor and a 20 ohm resistor are connected in parallel what is the equivalent resistance of this
a billiard ball moving at 580 ms strikes a stationary ball of the same mass after the collision the first ball moves at
two tugboats pull a disabled supertanker each tug exerts a constant force of 12times106 one an angle 16 west of north
a battery has an emf of 59 v and internal resistance of 078 the battery is attached to the load resistor r 73 a find
a proton is fired from far away toward the nucleus of a mercury atom mercury is element number 80 and the diameter of
a 15--tall object is 18 in front of a concave mirror that has a 60 focal length calculate the position of the image
an electric eye also called magic eye or photocell is a solid-state device that converts light into electrical energy
a 10-cm-tall candle flame is 55 cm from a lens with a focal length of 22 cm what is the image distance what is the
electric carsin recent years practical hybrid cars have hit the road - cars in which the gasoline engine runs a
at an amusement park a swimmer uses a water slide to enter the main pool the swimmer slides without friction and
an air bubble inside an 870 cm -diameter plastic ball is 300 cm from the surface as you look at the ball with the
the dimensions of atomic nuclei are of the order of 10-13m suppose that two a-particles the nucleus of helium mass of
a heat engine operating between 40oc and 380oc has an efficiency 60 of that of a carnot engine operating between the
a mercury thermometer has a bulb of volume 0100 cm3 at 10oc the capillary tube above the bulb has a cross-sectional
do sound waves exhibit diffraction effects if so determine the slit width that would diffract an audible sound wave
a goldfish lives in a 50-cm-diameter spherical fish bowl the fish sees a cat watching it if the cats face is 20 cm from
many of the elements in horizontal-bar exercises can be modeled by representing the gymnast by four segments consisting
the mass of the airplane is m 9010 kg the plane travels at a constant speed around a circular path of radius r 867
three particles of mass 8 kg 5 kg and 3 kg are connected by rigid rods of negligible mass lying along the y axis and
a 10-cm-thick layer of water stands on a horizontal slab of glass a light ray in the air is incident on the water 60