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a carnot engine utilizes a heat source at 580 degc and has an efficiency of 32 to increase the efficiency to 38 what
object 1 m1 3kg collides and permanently sticks together with a stationary second object m2 2kg after the collision
the total stopping distance for a car traveling at a speed of 30 msec is 65 m including a reaction time of 05 sec
aristotle believed that a force was necessary to keep an object moving where in his view did this force come from in
an automobile engine that burns gasoline has been engineered to have a relatively high efficiency of 22 while a car
your bedroom is 80 m away from the living room when requested by your parents to turn down your stereo you do and the
on a whale-watching expedition your underwater sound detector picks up a whale sound that has an intensity of 90
suppose a 05-kg mass on a spring that has been compressed 01 m has elastic potential energy of 12 j what is the spring
what are the controversies or unresolved issues surrounding the use of a pacemaker
ignite or turn on a stove burner fill an empty soda can with about 4 ml of water clasp the can with beaker tongs and
a spacecraft is launched from the surface of mars with a velocity of 05c along the positive xaxis another spacecraft is
a weather rocket is initially at rest on the ground and is fired straight up it accelerates at 30 msec2 for 30 seconds
you are driving down a highway at 20 msec when a deer suddenly steps onto the road 35 m in front of you your reaction
a lead ball is dropped into a lake from a diving board 5 m above the water after entering the water it sinks to the
transverse waves travel with a speed of 100 ms along a taut copper wire that has a diameter of 167 mm what is the
1 how could i use potential energy in personal life how could i use the concepts to better understand the world around
an 58 kg object moving at 4 ms eastward has a one-dimensional elastic collision with an 67 kg object moving at 51 ms in
a railroad car of mass 23200 kg moving at 433 ms collides and couples with two coupled railroad cars each of the same
your lab group is given 20ml of a 20 of a 20wv glucose solution and an unlimited amount of water from the starting 20
an analysis of an oxide of nitrogen with a molecular weight of 9202 amu gave 6957 oxygen and 3043 nitrogen what are the
climate change1 explain the difference between climate change and global warming2 explain completely the greenhouse
a doctor has ordered that a patient be given 11 g of glucose which is available in a concentration of 5500 g
a solution is prepared by dissolving 378 g of an unknown nonelectrolyte in 1900 g of cylcohexane tf 66 oc and kf 200
what are two of the more important sources of unavoidable error in this the evaluation of the gas law
for each of the following 9 solutions show the calculation for the mass of sucrose needed to make 50 grams of the given