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A certain element has a mass per mole of 54.9380 g/mol. What is the mass of a single atom in (a) atomic mass units and (b) kilograms? (c) How many moles of atoms are in a 258-g sample?
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear
Two 10-cm-diameter charged rings face each other, 16.0 cm apart. What is the electric field strength at the center of the left ring
A 1300 kg cartraveling at a speed of 37.0 {\rm m}/{\rm s} skids to a halt on wet concrete where mu_k = 0.500 . How long are the skid marks
Solar Radiation is incident on the surface of the Earth at an average of 1000 W/m^2. This is measured on a surface which is perpendicular to the incoming light
question cliff height you are climbing in the high sierra where you suddenly find yourself at the edge of a
a piece of copper wire is formed into a rectangle. The length of the rectangle is 3m and the width is 2m. what is the average electrical energy dissipated in the resistance of the wire
The engineer has done a survey and found that almost no one complains if the force directed up the ramp is no more than 20 .Ignoring friction, illustrate at what maximum angle should the ramps be built, assuming a full 28 grocery cart?
sheena can row a boat at 2.98 mih in still water. she needs to cross a river that is 1.21 mi wide with a current
A 33.8-kg child runs with a speed of 2.80 m/s tangential to the rim of a stationary merry-go-round. Calculate both the initial and the final kinetic energy of the system
An aluminum rod is 16.0 cm longat 20°C and has a mass of 350 g. If 13000 J of energy is added to the rod by heat, what is the change in length of the rod
A 15,000 kg F-18 (jet fighter) lands at 50 m/s on an aircraft carrier, its tail hook snags the cable to slow it down. The cable is attached to a spring with a spring constant of 62,000 N/m. How far does the spring stretch to stop the jet?
a block, m= 3 kg, slides on a frictionless horizontal surface.It then goes up a 15 degree incline having a coeffecient offriction uk=0.30 a distance L before stopping. find the acceleration of the block on the plane
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