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a heat engine takes in 111 kj of heat from a reservoir at 811 k and exhausts 83 kj to a reservoir at 290 ka what is the
an object is thrown up in theair straight up and it takes 10 seconds to reach a maximum height what is the objects
hydrochloric acid is usually purchased in a concentrated form that is 370 hcl by mass and has a density of 120 gmlhow
a gold prospector finds a solid rock that is composed solely of quartz and gold the mass and volume of the rock are
a charge of q 75uc is located in an electricfireld the x amp y components of the electric field areex600 x 103 nc and
the solubility of benzoic ascid in water is 680g per 100ml at 100 degrees c and 034g per 100ml at 25 degrees c
asteroids are mainly composed of metals like iron and nonmetals like carbon briefly explain the differences between
a light ra reflects from a mirror hanging vertically on a wall in your bathroom and the ray strikes a particular point
a cart is driven by a large propeller or fan which can accelerateor decelerate the cart the cart starts out at the
what mass of sucrose c12h22o11 should be combined with 500 grams of water to make a solution with an osmotic pressure
a recreational aircraft has a lift- off speed of 110 kmhr if the aircraft has a constant acceleration of 5ms2 what
in the figure below a butterfly net is in a uniform electric fieldof magnitude e 30 mncthe rim a circle of radius a
a playground carousel is free to rotate about its center on frictionless bearings the carousel has an angular speed of
give all structural and geometric isomers for the monobromination of propylcyclopentane number the different isomers
a string has a linear density of 680 10-3 kgm and is under a tension of 345 n the string is 19 m long is fixed at both
a proton is accelerated from rest through a potential difference of 90v find the energy of the particle and the speed
to what final volume should you dilute 600 ml of a 590m ki solution so that 200 ml of the diluted solution contains 330
a person hums into the top of a well and finds that standing waves are established at frequencies of 23 69 and 115 hz
an imine is a special type of amine that has a carbon-nitrogen double bond construct an orbital interaction diagram
a 60 kg football player is running down the field at a speed of 5 ms he is being chased by a 40 kg player who is
how many milliliters of 0150 m hcl are needed to completely neutralize 550 ml of 0106 m baoh2 solutionhow many
a block of mass m hangs from a spring having spring constant k 12 nm and oscillates up and down with simple harmonic
a certain camera lens has a focal length of 149 mm its position can be adjusted to produce images when the lens is
a double star is a system of two stars say having massesm1 and m2 moving around the centre ofinertai of the system due