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George has been selling 5,000 T-shirts per month for $8.50. When he increased the price to $9.50 he sold only 4,000 T-shirts. What is the demand elasticity? If his marginal cost is $4 per shirt, what is his desired markup and what is his initial actual markup? Was raising the price profitable?
Consider a 1.0 g sample of carbon with 14C / 12C of 1.3 x 10-12. What is the activity of the sample
Use the period of the earth (2.54 y), its mean orbital radius (1.496 × 10^11 m), and the universal gravitational constant (6.673 × 10^?11 N · m2/kg2) to calculate the mass of sun
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. How far from the dock does the boat reach the child
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. what is the total charge incident on the atmosphere
If camera is focused for a distance of 20m, should the lens be moved closer to the film or farther from the film to focus on an object 5 m away. Explain why.
A rifle of mass 10 kg fires a 10 g bullet into a 3 kg block of woodwhich is suspended by a thin wire, forming a ballistic pendulum.The bullet remains embedded in the block of wood, which is observedto swing so that it reaches a vertical height of ..
an ion having charge 6e is traveling horizontally to the left at 8.55 kms. when it enters a magnetic field that is
A group of people with total mass 1500 kg stands in a boat with mass 12,000 kg at rest in frictionless water. If the whole group walks 6.5 m from bow to stern, how much does the boat move in meters
A rock is thrown vertically up at 6.7 m/s. (a) What is it's height when its velocity is 1.35 m/s? (b) Has the rock made it to the highest point in the path?
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 11.0 cm behind the mirror. Determine the mirror's radius of curvature
The difference in piezometric pressure, pz,A – pz,B. Express both answers in kPa and pressure differences pA - pB.
consider a .10kg block being pushed horizontally along a tablewith a force of .10N so that the block moves 2.0m at a constantspeed in the same direction it is pushed. How much work is done by the pushing force
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