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the three air cartsshown in the figure have masses reading from left to right ofm 2m and 4m respectively initially the
a 15 kg playground ball is moving with a velocity of 30 ms directed 30 degrees below the horizontal just before it
a rotating wheel requires 50 s to complete 50 revolutions its angular speed at the end of the 50 s interval is 75 rads
a ball of mass m at one end of a string of length l rotates in avertical circle just fast enough to prevent the string
a spring is hung from the ceiling a 0400kg block is then attached to the free end of the spring whenreleased from rest
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult the
a submarine is 300 m horizontallyout from the shore and 143 m beneaththe surface of the water a laser beam is sent from
200 j enters a carnot engine from the hot reservoir held at400 k during the entire cycle 50 j of useful work
an anthropologist focuses her camera on a distant mountainpeak when she sees a very interesting looking monkey just 52
four polarizing sheets are placed one behind the other each onemaking an angle of 20o with the preceding one a
a 14700n car is traveling 25ms the brakes are applied suddenly and the car slides to a stop the average braking force
180 ml of hcl was required to titrate 100 ml of a 100 by mass naoh solution density11 gml what is the concentration of
lab 2 maximum range of a projectile due at the end of week 2 all simulations can be downloaded here this weeks file
calculate the ph of a solution containing 015 m acetic acid and 025 m sodium acetate for acetic acid ka 18 x 10-5
an experiment was devised to investigate the effects on the temperature of a cup of coffee when cream is added at
one whale says to its friend 75 km away how long will it before the friend hear the speed of a soundin water is1500
a wheel is placed on a test stand so that it is free to turn on its axle if a constant net torque of 750 n m is
a piece of metal weighing 510 g at a temperature of 486 c was placed in a calorimeter containing 2000 ml of water at
light of wavelength 589 nm is used to view an object under a microscope if the aperture of the objective has a diameter
a 30 kg particle with velocity v 50 ms i -60 ms j is at x 30 m y 80 m it ispulled by a 70 n force in the negative x
when ultraviolet radiation of wavelength 584nm from a helium lamp is directed on to a sample of krypton electrons are
an undersea research chamber is spherical with an external diameterof 520 m the mass of the chamber whenoccupied is
a person walks in the following pattern 60 km north then 20 km west and finally 21 km south a how far in km and b at
when a 325g sample of solid sodium hydroxide was dissolved in a calorimeter in 1000 g of water the temperature rose
an olympic pool has dimensions 500 m times 250 m times 268 m length times width times depth the density of the pool