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a particular heat engine has a mechanical power output of480kw and an efficiency of260 the engine expels890103j of
a solution is prepared by mixing 012 l of 014 m sodium chloride with 025 l of a 019 m mgcl2 solution what volume of a
the vibration of a diatomic molecule can be modeled as a simple harmonic oscillator the values for the mass and force
what is the mass of nh3 in a 800 cm3 sample that has a density of 092gcm3 and consists of 20by mass of
an asteroid has acquired a net negative charge of 119 c from being bombarded by the solar wind over the years and is
a copper-constantan thermocouple generates a voltage of 503 10-3 volts when the temperature of the hot junction is
why are carbonyl double bonds polarized draw a carbonyl and assign partial charges to the oxygen and carbon
a styrofoam calorimeter contains 400g of water at 50degc to this we add 20g of ice at initial temperature of 0degc
a research group plans to construct an engine that extracts energy from the ocean using the fact that the water
current convention defines 1 amu as exactly 112 the mass of an atom of the isotope 12c since most elements occur
a nuclear power plant has a reactor that produces heat at the rate of 690 mw this heat is used to produce 250 mw of
magnesium metal reacts with hcl solution liberating h2 gas and generating mg2 cations in solution a 2965-g sample of mg
the simple harmonic oscillator can be used as a model for the vibration of a diatomic molecule mass and force constant
ethanol has a heat of vaporization of 3856 kjmol and a normal boiling point of 784 c what is the vapor pressure of
a cube of aluminum has an edge length of 20 cm aluminum has a density 27 times that of water 1 gramcm and a specific
suppose the ruler in procedure 3 is asymmetrical balancing at the582cm mark the ruler is now supported at the443cm mark
a railroad freight car weighing 42 tons and traveling 10 ms overtakes another freight car weighing 20 tons and
discuss the absence or appearence of zero point energy for translational and rotational motion for 2 and 3
a robot unloads a finished component from a machine and places it on a gravity conveyor the conveyor accelerates from
the center of gravity of a 5 kg lower leg is 18 cm from the knee when pivoted at the knee and allowed to swing the
a uniform 2000 kg beam 10 m long supports a 500 kg weight 3 m for the right support calculate the forces in each of the
a 107 ball is tied to a string it is pulled to an angle of 420 and released to swing as a pendulum a student with a
a projectile is launched above the ground with an initial speed of 50 ms at an angle of 60 degrees above the
carry out the following operations and express the answer with the appropriate number of significant figuresa 3205 -
a thin soap film n 135 is suspended in air the spectrum of light reflected from the film is missing two visible