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an incredibly large slingshot is stretched 15 meters to launch a 1800-gram projectile with a speed sufficient to escape
a sound wave propagates in air at 28degc with frequency 320 khz it passes through a region where the temperature
115 grams of kcl is dissolved in 750ml of water assume density1005gml what would be the freezing point and boiling
as a certain sound wave travels through the air it produces pressure variations above and below atmospheric pressure
a platinum resistance thermometer has resistances of 2000 when placed in a 0c ice bath and 2538 when immersed in a
calculate the weight in pounds of the water that would fill a cylindrical bucket 140 inches wide and 180 inches high
a length of wire has a radius of 300 times 10 -3 m and a resistance of 0200 when the potential difference across the
a wire of diameter 0750 mm and length 300 m has a measured resistance of 240 what is the resistivity of the
determine the amplitude of the resultant wave when two sinusoidal string waves having the same frequency and traveling
a 69-g ice cube at 0degc is heated until 60 g has become water at 100degc and 90 g has become steam at 100degc how much
a microscope with a tube length of 200 mm achieves a total magnification of 800x with a 40x objective and a 20x
an unknown substance has a mass of 0125 kg and an initial temperature of 1123degc the substance is then dropped into a
a hard-boiled egg of mass 520 moves on the end of a spring with force constant 248 the egg is released from rest at an
an aluminum cup contains 225 g of water and a 40-g copper stirrer all at 27degc a 400-g sample of silver at an initial
a certain kind of glass has nblue 162 for blue light and nred 1572 for red light if a beam of white light containing
a freshman is currently enjoying the arts studio program she is pursuing at a well-known university in her free time
a beam of light in air is incident on the surface of a rectangular block of clear plastic n 163 its velocity inside
dez pours a liquid n 134 into a container made of glass n 152 the light ray in glass incident on the glass-to-liquid
a grinding wheel in the shape of a solid disk is 0300m in diameter and has a mass of 250kg the wheel is rotating at
to what volume should you dilute 440 ml of a 460 m ki solution so that 285 ml of the diluted solution contains 365 g of
light from a 580-nm monochromatic source is incident upon the surface of fused quartz n 156 at an angle of 28deg what
we can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 700kg and diameter 100m a if this tumbler
a solution of 486 h2so4 by mass has a density of 139 gcm3 at 293 k a 232 cm3 sample of this solution is mixed with
an airplane propeller is 205m in length from tip to tip with mass 122 kg and is rotating at 2200 rpm revmin about an
find the required angular speed omega of an ultracentrifuge for the radial acceleration of a point 300cm from the axis