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An iron casting containing a number of cavities weighs 16967.7 N in air and 13515.2 N in water. What is the total volume of all the cavities in the casting? The density of iron ( that is a sample with no cavities) is 7.87 g/cm3.
A small object with mass 0.200 kg moves with constant speed in a vertical circle of radius 0.500 m. What is the translational speed of the object
A 17-kg projectile is fired at an angle of 60° above the horizontal and with a speed of 240 m/s. At the highest point of its trajectory the projectile explodes into two fragments with equal mass, one of which falls vertically with zero initial spe..
A house has a floor area of 162.0 m2 and an outside wall that has an area of 40.50 m2. The earth's magnetic field here has a horizontal component of 2.550E-5 T, Determine the magnetic flux through the wall if the wall faces north
the driver sees a child standing on the road. She takes .80 s to react, then steps on the brakes and slows at 6.5 m/s squared. Explain how far does the car go before it stops?
What is the concentration of the Cd in the soil if the city of Des Moines adds 3 tons of compost/ acre-6 inches given the compost contains 50 ppm Cd
Your friend's car is broken and you volunteer to push it to the nearest repair shop which is 2.0 km away. what is the normal force between the two bumpers
What is specific gravity of this other fluid
Three equal point charges, each with charge 1.50 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.6m. What is the electric potential energy U of the system.
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. estimate the diameter of the pinhole
An advertisement claims that a particular automobile can "stop on a dime." What net force would actually be necessary to stop an automobile of mass 920kg traveling initially at a speed of 56.0km/h in a distance equal to the diameter of a dime, whi..
For no apparent reason, a poodle is running at a constant speed of 3.40 m/s in a circle with radius 2.8m. Let v1 be velocity vector at time t1, and let v2 be the velocity vector at time t2.
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