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one cubic meter 100m3 of concrete has a mass of 230e3kg and 100m3 of copper has a mass of 892e3kg find the radius of an
a catapult launches a test rocket vertically upward from a well giving the rocket an initial speed of 800 ms at ground
a ski jumper leaves the ski track moving in the horizontal direction with a speed of 150 ms the landing incline below
a car accelerates down a hill going from the rest to 300 ms in 600 s a toy inside the car hangs by a string from the
as part of a fiendish plan the physics student society decided to use a catapult to launch a water balloon toward the
can you help me with these questionshow can you tell if a single measurement is more precise than anotherif the
a projectile is launched at an angle of 130deg above the horizontal what is its initial speed if it hits a target that
an oil film n 148 floating on water n 133 is illuminated by white light at normalnbspincidence the film is 274 nm
three people are fighting over a book the mass of the book is m918kg each person exerts a force on the book f the
in raising a 6400-n piano with a pulley system the movers note that for every 30 m of rope pulled down the piano rises
the ball was thrown from 190 m height building the initial velocity is 392 ms and it creates 30 degree angel with the
question 1rob was supposed to spend his two-week school work experience at his local auto-repair shop unfortunately his
question suppose that there are two goods available to the consumer-pens and pencils suppose that the price of a pen is
question a tank whose bottom is a mirror is filled with water to a depth of 194 a small fish floats motionless 710
question tarzan in one tree sights jane in another tree he grabs the end of a vine with length 20 m that makes an angle
question a textbook of mass 209kg rests on a frictionless horizontal surface a cord attached to the book passes over a
question three identical very dense masses of 5200kg each are placed on the xaxis one mass is at x1 -110cm one is at
question a thin horizontal 20-cm-diameter copper plate is charged to 40 nc assume that the electrons are uniformly
question tim and rick both can run at speed vr and walk at speed vw with vr gt vw they set off together on a journey of
question the tires of a car make 60 revolutions as the car reduces its speed uniformly from 870kmh to 640kmh the tires
question the total translational kinetic energy of the molecules of a sample of gas at 421 k is 395x104j how many moles
question three odd-shaped blocks of chocolate have the following masses and center-of-mass coordinates 1 0300kg 0300 m
question a thin stream of water flows vertically downward the stream bends toward a positively charged object when it
questionnbspthe three 250g masses are connected by massless rigid rods what is the triangles moment of inertia about
question a superball with mass m equal to 50 grams is dropped from a height of hi 15 m it collides with a table then