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The density of sodium is 968g /cm^3. suppose you need 250 gm of sodium for an experiment. which volume of sodium do you need?
The 72.9 kg pilot does not want his radial acceleration to exceed 8.1 g. The acceleration of gravity is 9.8 m/s2 . What is the minimum radius of the circular path?
If we ignore the possibility of crossing over, how many different combinations of chromosomes are possible in the gametes of a single human
What is the acceleration during takeoff of a jumbo jet, with a mass of 32,000 kg when the thrust for each of its four engines is 32,000 N?
if the coefficient of kinetic friction between the sled and ground is 0.4,what is the maximum load onthe sled that the man can pull at constant speed?
Explain why people confined to wheelchairs because of paralyzed lower limbs have thin, weak bones in their thighs and legs.
A stone has a mass of 6.0 10-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is
A ball of mass 522g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground. a) At what height above the ground does the ball start to move?
Suppose that an ideal frictionless inclined plane has an angel of inclination of 5 degrees with respect to the horizontal. What is the acceleration of an object sliding down that plane? Assume that
An experiment measures the speed of a 250 kilogram motorcycle every 2 seconds. The motorcycle moves in a straight line. What is the net force acting on the motorcycle?
A maker of frozen meals claims that the average caloric content of its meals is 800 and the standard deviation is 25. A researcher tested 12 meals and found that the average number of calories was 873
Calculate the time integral of activity (t = infinity) for a 50 MBq source of F-18 in an organ for the following biological half times. Express your results in mCi-hr, MBq-s, and number of disintegr
A 17.0 kg loudspeaker is suspended 2.40m below the ceiling by two 3.10m long cables that angle outward at equal angles. what is the tension of each of the cables?
.0002 kg spider is suspended from a thin strand of spider web. The greatest tension the strand can withstand without breaking is .002 n. What is the maximum acceleration with which the spider can s
Calculate the effective dose for the following set of individual organ equivalent doses, using all three sets of weighting factors from the ICRP (30, 60, and new) and compare the results.
What molecule formula would you get, if glucose (C6H12O6) linked together ten times?
An electric sign is supported by a wire making a 45 degree angle with a boom. (a) If the sign weighs 1000N, what is the outward thrust exerted by the boom? (b) What force is being exerted by the wi
A cell spend most of its time in interphase mitosis or cytokinesis
A downward force D with her trailing hand. Point C is the center of gravity of the pole, a=0.750 m, b=1.63 m, c=2.03 m. What is the magnitudes of U?
On an amusement park ride, passengers are seated in a horizontal circle of radius 7.5 m. The seats begin from rest and are uniformly accelerated for 21 seconds to a maximum rotational speed of 1.4
Each time a molecule of glucose is completely oxidized via aerobic respiration, how many oxygen molecules are required?
What is the economical and social point of view on fresh water biomes
Wayne pulls a 309 N sled along a snowy path using a rope that makes a 36 angle with the ground. Wayne pulls with a force of 66.6 N. The sled moves 46.9 m in 4.8 s. What is Wayne's power?
A piece of concrete measures 3 ft by 3ft by 1.25ft. (a) What is its weight? (b) Find the buoyant force that acts on it when it is submerged in water. (c) What is the net force on the concrete piece
What are the medical uses of broomsedge bluestem