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15 pounds of water within a piston-cylinder assembly execute a carnot power cycle during isothermal expansion the water
gallium-68 decays by positron emission with a half-life of 683 min how much 68ga remains from a 100 mg sample after 683
a duck is floating on a lake with 27 of its volume beneath the water what is the average density of the
the plates of a parallel plate capacitor are d mts apart at t0 an electron is released at the bottom plate with a
a 180-kg object attached to a spring moves without friction b 0 and is driven by an external force given by the
consider a reservoir with a diameter of 450 m and a depth of 10 m a how many liters of 010 m naf should be added to
the rydberg constant is 1096776 x 107 m-1a what is the wavelength of the first balmer line j2 k3 for hydrogen z1b what
when a person inhales air moves down the windpipe at 15 cms the average flow speed of the air doubles through a
air in a piston-cylinder device is compressed from 25degc and 100 kpa to 500 kpa during a polytropic process for which
you want to construct a simple pendulum with a period of 2 secondsa what length should it haveb if you take your
certain stars are thought to collapse at the end of their lives combining their protons and electrons to form a neutron
suppose we have a gas in thermal equilibrium at temperature t each molecule of the gas has mass m a what is the ratio
an object 0600cm tall is placed 165cm to the left of the vertex of a concave spherical mirror having a radius of
a block of mass 200kg starts at rest at the top of a ramp that is inclined delta 400 degrees with the horizontal the
a metal hoop of mass 25 kg and with a radius of 05 m rolls smoothly without slipping along a floor with a velocity of 2
you are sitting in a wagon and rolling horizontally at 5 ms when your little sister jumps into your lap as you pass by
a beam of light in air strikes the surface of a smooth piece of plastic having an index of refraction of 155 at an
light in air is incident perpendicularly on a sheet of crown glass having an index of refraction of 1522 determine both
a horizontal force of 50 n pushes a box that weighs 75 n across the floor at a constant speed the coefficient of
a gas mixture consists of 320mg methane 175mg of argon and 225mg of neon the partial pressure of neon at 300k is 887kpa
in a stunt scene for a new action movie a motorcyclist will take off horizontally from the top of one building travel
chemical name formulahow many atoms of hydrogen and oxygen what other elements are in the compound for wood
a small solid ball of mass m and radius r rolls without slipping on the track whose height y as a function of
a charge q 750 uc is located in en electric field the x- and y-components of the field are ex 600 x 103 nc and ey 800