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q1 a battery of emf 150v has a terminal pd of 125v is joined to it calculate the current flowing the internal resistance r and the terminal pd when a
q1 a 290-m-long 300 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction
q1 light of wavelength 443 nm in air enters a fishbowl filled with water and then exits through the crown-glass wall of the container find out the
q1 a 346- uniform 104- bar is suspended horizontally by two vertical cables at each end cable a can support a maximum tension of 5060 without
q1 a ball is dropped from rest at a height of 80 m above the grounda what is its speed as it hits the groundb how long does it take for it to reach
q1 a positive charge of q 35 microc is pulled on by two negative charges one -20 microc is 0050 m to the north and the other -40 microc is d 0029 m
q1 consider a cylindrical segment of a blood vessel 29 cm long and 170 mm in diameter what extra outward force would such a vessel need to withstand
q1 a hockey stick is swung with an average angular acceleration of 15 rads2 what is an angular velocity of the stick when it strikes the ball at the
q1 as part of a safety investigation two 1300kg cars travelling at 18ms are crashed into different barriers find the average forces exerted on a car
q1 when testing for starch we used water starch suspension onion juice and potato juice and glucose solution as controls we added drops of iodine
q1 lets assume that 10 x 10-12 mol of enzyme t was present in both assays-ie that given in problem and that with another initial velocity is 18
q1 the photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific reaction center
q1 what is a lipid explain the different classes of lipids what is a fatty acid what makes acid saturated or unsaturatedq2 what is the benefit of a
q1 if you cross a black fur rabbit and a white fur rabbit the resulting offspring look gray when examining closely the fur of gray rabbit consist of
q1 a summer-squash plant that produces disc-shaped fruit is crossed with summer-squash plant that produces long fruit all the f1 have disc-shaped
q1 if some cell-surface receptors including cytokine receptors and notch can rapidly signal to the nucleus by activating latent transcription
q1 a late autumn rain falls equally over a catchment at a rate of 9cmhr for two hours mean soil infiltration rate for the catchment is constant at
q1 activation of t cells requires that antigens be presented from antigen-presenting cells not simply by exposure to the antigen in solution what
q an antibiotic is a drug that kills or inhibits the growth of microorganisms the use of antibiotics has been of paramount importance in the battle
q1 if substance is less concentrated outside a cell than inside the cell in which direction is that substance probable to diffuse across the cell
q1 in examining a picture of the cell taken with an electron microscope a student observes that the cell has a nucleus and a cell membrane but not a
q1 a how are bacteria cells adapted to live in the hypnotic environmentb how are amoebas protozons adapted to live in the hypnotic environmentc
q though plants fungi and prokaryotes all have cell walls we classify them under different taxonomic units which of the observations below comes
q most biologists believe that immunes systems defense against infections largely rests on its ability to distinguish self molecules from non-self