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through the compression stroke of a diesel engine air is compressed from 1 atm and 27 degrees c to 125 of its initial
two boxes of massm1 15 kg and mass m2 22 kg are linked by a spring with spring constant k 62 nm the mass of the
a 560kg mass is pushed against a spring k2000nm such that the spring is compressed 12 cmnbsp the mass is released
to vaporize 1 g of water requires about 538 cal of heat interaction at 100 degrees c the resulting vapor at 1 atm
a point source of light is 1450 cm below the surface of a body of water discover the diameter of the circle at the
a thin converging lens of focal length 123 cm forms an image of an object placed 259 cm from the lensa discover the
an ice-cube tray is full with 779-gof water after the filled tray reaches an equilibrium temperature 200degc it is
the focal length of a simple magnifier is 700 cm suppose the magnifier to be a thin lens placed very close to the eye1
if a visible photon by wavelength 434 nm is emitted from an atom in a hydrogen gas lamp what energy state was the atom
a 30-m-long rocket train car is travelling from los angeles to new york at 08c when a light at the center of the car
a grinding wheel of radius 0370 m rotating on a frictionless axle is brought to rest by applying a constant friction
the motor of a household refrigerator consumes electric power at an average rate of 100 w when its internal temperature
an atom by a single electron ie a hydrogen-like atom has anatomic number z 3 what is the principal quantum number of
a thin glass rod is bent into a semicircle of radius r5cmnbsp a charge of q 45 pc is uniformly distributed along the
two large parallel copper plates 3cm apart have a uniform electric field among themnbsp an electron is released from
an electron is moving at 3 x 105 ms in the positive x direction a magnetic field of 8 t is in the positive z direction
copper with a mass of 300 g initially at 200 degree celsius is added to water with an initial temperature of 10 degree
a terrestrial telescope a spyglass by a diameter of 25cm is attached to a rifle and used for target practice with
two narrow slits are utilized to produce a double-slit interference pattern with monochromatic light lambda 680 nmnbsp
in the figure 29-49 four long straight wires are perpendicular to the page and their cross sections form a square of
many cultures around the world still use a simple weapon called a blowgun a tube by a dart that fits tightly inside a
assuming a typical efficiency for energy utilize by the body how many slices of pizza should you eat to walk for 10 hr
a two 68 g ice cubes are dropped into 234 g of water in a thermally insulated container if the water is initially
larger animals use proportionately less energy than smaller animals that is it takes less energy per kg to power an
a person on earth notices a rocket approaching from the right at a speed of 071 c and another rocket approaching from