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in an electric shaver the blade moves back and forth over adistance of 21 mm in simple harmonic motion with frequency
a 322 g iron rod initially at 230 c is submerged into an unknown mass of water at 630 c in an insulated container the
when 1 mol of a fuel is burned at constant pressure it produces 3455 kj of heat and does 10 kj of workwhat is the value
a particular type of automobile storage battery is characterized as425-ampere-hour 99 vwhat total energy can the
a certain substance has a mass per mole of 39 gmol when 288 jis added as heat to a 285 g sample ofthis material its
a 170-mh inductor with internal resistance of 220 omega is connected to a 120-v rms source if the average power
an unstable particle is at rest and suddenlybreaks up into two fragments no external forces act on theparticle or its
a very long wire generates a magnetic field of 9x 10-7 at a distance of 3 mm what is the magnitude of the
a 540-w space heater is designed for operation in germany where household electric outlets supply 230 v rms service
you are given a 120 v batterya hairdryer designed to workproperly at 120 v where its rated at 1200 w and a mixer
a wire encloses an irregularly shaped surface that is symmetric about the z-axis and lies in the xz-plane a 2a current
you are given a 9 v battery and three bulbs rated atrespectively 9v 5 w 9v 2w and 12 v 6w assume that the battery has
in a fusion reaction two deuterium nuclei combine to form a helium nucleus one of the incident nuclei is initially
a cylindrical cable with 159 x 10-8 m resistivity carries a current of 1000a there is a potential difference of 19 x
there are four charges each with a magnitude of 206 muc two are positive and two are negative the charges are fixed to
a long solenoid with 100 turnscm and aradius of 700 cm carries a current of280 ma a current of 500 a exists in a
how much heat is required to warm 140l of water from 220 c to 1000 c assume a density of 10 gml for the
water flows over a section of niagara falls ata rate of 120 x 106 kgs and falls 500 m what is the power dissipated by
1 a student performs two melting point determinations on a crystalline product in one determination the capillary tube
a solid sphere is thrown on a horizontal plane in sucha way that initially it slips without rolling in a
a gas expands from 360 ml to 971 ml at constant temperature calculate the work done in joules by the gas if it expands
an ac generator has an output rms voltage of 54 v at a frequency of 46 hz if the generator is connected acrossa 5 mh
a window repairman picks up one end of a large sheet of glassa second smaller piece of glass is on top us08 and uk02a-
a 730-muf capacitor is connected to a generator operating at alow frequency the rms voltage of the generator is 300 v
consider crystallization of sulfanilamide in which 10ml of hot 95 ethanol is added to 010g of impure sulfanilamide