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A block of wood has a density of 850 kg/m^3, and water density is 1000 kg/^3.
a. Find what portion of the volume of a wood cube .15 m on each side will be above the water line as it floats?
b. Find what weight will the block support such that it just sinks level with the surface of the water?
a lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm.a how tall is the lamps
Consider a Hydrogen atom with the electron in the n = 8 shell. What is the energy of this system, How many subshells are in this shell
A charge of 15.0 uC is plaed at the center of a cube. Each side of the cube has an area of 4.50 cm^2 calculate The total electric flux passing through the surface of the cube
A current of 0.300 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heart beat and disrupting the flow of blood (and thus oxygen) to your brain. If that current persists for 2.17 min, how many conduction electr..
A block of mass 4.6 kg slides 15 m from rest down an inclined plane making an angle of 28 o with the horizontal. what is the retarding force due to friction
The components of the electric field in an electromagnetic wave traveling in vacuum are described by Ex = 0, Ey = 0, and Ez = 4.88 sin(kx - 1.44×108 t) V/m, where x is measured in meters and t in seconds.
A child slides down a slide with a 21^\circ incline, and at the bottom her speed is preciselyhalf what it would have been if the slide had beenfrictionless. Calculate the coefficient of kinetic friction between the slide and the child.
Water is moving with a speed of 4.7 m/s through a pipe with a cross-sectional area of 4.3 cm2. The water gradually descends 7 m as the pipe increases in area to 8.2 cm2.
A sledge loaded with bricks has a total mass of 17.4 kg and is pulled at constant speed by a rope inclined at 21.0° above the horizontal. What is the tension in the rope
A proton moves with a velocity of = (4i ? 5j +k ) m/s in a region in which the magnetic field is = (i + 2 ?k ) T. What is the magnitude of the magnetic force this particle experiences?
A flask with a volume of 1.50 L, providedwith a stopcock, contains ethane gas (C2H6)at 300 K and atomospheric pressure (1.013 x 105Pa). How many grams of ethane remainin the flask
Calculate the camel's eastward displacement while he crosses the desert. reply in units of km.
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