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a) A crate containing 40 bricks is raised by a forklift through a height of 1.3m
a) A crate containing 40 bricks is raised by a forklift through a height of 1.3m to place on a truck bed. Determine the potential energy gained by the crate if each brick has a ma…
a) A crate of mass 50.1 kg rests on a level surface, with a coefficient of kinet
a) A crate of mass 50.1 kg rests on a level surface, with a coefficient of kinetic friction 0.73 . You push on the crate with an applied force of 753 N. What is the magnitude of t…
a) A crate of mass 50.1 kg rests on a level surface, with a coefficient of kinet
a) A crate of mass 50.1 kg rests on a level surface, with a coefficient of kinetic friction 0.73 . You push on the crate with an applied force of 753 N. What is the magnitude of t…
a) A crate of mass 67.9 kg rests on a level surface, with a coefficient of kinet
a) A crate of mass 67.9 kg rests on a level surface, with a coefficient of kinetic friction 0.98 . You push on the crate with an applied force of 840 N. What is the magnitude of t…
a) A crazy New Yorker is running across the rooftops of buildings. He jumps from
a) A crazy New Yorker is running across the rooftops of buildings. He jumps from roof to roof and usually makes it! In one case, he runs off a roof horizontally at 7.8 meters per …
a) A cube of wood whose edge is 12 mm is floating in a liquid in a glass with on
a) A cube of wood whose edge is 12 mm is floating in a liquid in a glass with one of its faces parallel to the liquid surface. The density of wood is 909 kg/m^3, that of liquid is…
a) A cubic container full of hot water at a temperature of 90 °C is completely l
a) A cubic container full of hot water at a temperature of 90 °C is completely lagged with an insulating material of thermal conductivity 6.4x10-4 Wcm-1K-1 (6.4x10-2 Wm-1K-1). The…
a) A cup of coffee takes 5 min. to drop from boiling to 120 F in a room that is
a) A cup of coffee takes 5 min. to drop from boiling to 120 F in a room that is 68 F. What is the temperature of the coffee after 20 min.? (b) A woman is waiting for her coffee fo…
a) A current loop in a uniform magnetic field experiences A net torque b) A curr
a) A current loop in a uniform magnetic field experiences A net torque b) A current loop in an external magnetic field will rotate so that its own magnetic field is anti-parallel …
a) A cylindrical rod having constant thermal conductivity, whose side surfaces a
a) A cylindrical rod having constant thermal conductivity, whose side surfaces are perfectly insulated while the opposite ends are maintained at different temperatures, which do n…
a) A deep sea diving apparatus (bathyscaphe) can submerge to a depth of approxim
a) A deep sea diving apparatus (bathyscaphe) can submerge to a depth of approximately 11,000 m. What pressure must its hull withstand at this depth b) If the bathyscaphe has…
a) A disk of radius a = 22.7 cm lies in the yz plane with its axis along the x-a
a) A disk of radius a = 22.7 cm lies in the yz plane with its axis along the x-axis and carries a uniform surface charge density rho = 3.8 nC/m^2. Find the value of x for which Ex…
a) A disk of radius a = 22.7 cm lies in the yz plane with its axis along the x-a
a) A disk of radius a = 22.7 cm lies in the yz plane with its axis along the x-axis and carries a uniform surface charge density rho = 3.8 nC/m^2. Find the value of x for which Ex…
a) A distribution of means is likely to have ________ compared to a distribution
a) A distribution of means is likely to have ________ compared to a distribution of raw scores. Select one: A. lower variance B. higher standard deviation C. equal standard deviat…
a) A diverging lens of focal length 5 cm, is making an image of a 3 cm tall obje
a) A diverging lens of focal length 5 cm, is making an image of a 3 cm tall object which is 7 cm away from the lens. Theoretically, what is the position of the image? b) Theoretic…
a) A double-slit experiment is set up using red light ( = 748 nm). A first order
a) A double-slit experiment is set up using red light ( = 748 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 3…
a) A double-slit experiment is set up using red light (l = 719 nm). A first orde
a) A double-slit experiment is set up using red light (l = 719 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between …
a) A driver has a reaction timeof 0.50s, and the maximum deceleration of her car
a) A driver has a reaction timeof 0.50s, and the maximum deceleration of her car is 6.0m/s2. She is driving at 20 m/s when suddenly she sees anobstacle in the road 50m in front of…
a) A driver has a reaction timeof 0.50s, and the maximum deceleration of her car
a) A driver has a reaction timeof 0.50s, and the maximum deceleration of her car is 6.0m/s2. She is driving at 20 m/s when suddenly she sees anobstacle in the road 50m in front of…
a) A fall in the price of an input induces a profit maximizing firm to experienc
a) A fall in the price of an input induces a profit maximizing firm to experience both substitution and output effects that cause it to hire more of that input. Explain how the pr…
a) A family has five children. If the probability of birth of either sex is assu
a) A family has five children. If the probability of birth of either sex is assumed equally likely, what is the probability that exactly four of the children are boys? b) Suppose …
a) A file is to be shared among different processes, each of which has a unique
a) A file is to be shared among different processes, each of which has a unique number. The file can be accessed simultaneously by several processes, subject to the following cons…
a) A first order irreversible reaction A rightarrow B is carried out in a series
a) A first order irreversible reaction A rightarrow B is carried out in a series of a number (N) of equal volume Continuous Stirred Tank Reactors (CSTRs) whose total volume is V_R…
a) A football player tests his vertical jump by jumping straight up a distance o
a) A football player tests his vertical jump by jumping straight up a distance of 47.5 inches. What was the player's initial velocity in meters per second? m/s b) What is the play…
a) A force F = (2.17 N/ m2 ) x2 i is applied to a particle initialy at rest in t
a) A force F = (2.17 N/m2)x2i is applied to a particle initialy at rest in the xy plane. Calculate the work done by this force on the particle as it moves in a straight line from …
a) A force of 5 N is required to compress anindustrial spring by 0.0001 m, how m
a) A force of 5 N is required to compress anindustrial spring by 0.0001 m, how much force is required tocompress this spring by 0.0003 m? b) An object oscillates from a massle…
a) A function f: R---->R is called periodic with period p if, for all x \"within
a) A function f: R---->R is called periodic with period p if, for all x "within" R it holds that f(x) = f(x+p). Prove that all continuous periodic functions are uniformly conti…
a) A gas has a volume of 7.0 liters and mass of 4.44 x10 5 micrograms. What is i
a) A gas has a volume of 7.0 liters and mass of 4.44 x105 micrograms. What is its density? b) A certain liquid has a density of 0.855 g/ml. How manyLITERS would weigh 1.00 kg? c) …
a) A gas mixture consists of 2.47 atm of SO 2 Cl 2 , 0.41 atm of SO 2 , and 0.41
a) A gas mixture consists of 2.47 atm of SO2Cl2, 0.41 atm of SO2, and 0.416 atm of Cl2. Calculate the reaction quotient for this system prior to the establishment of the equilibri…
a) A glass tube is open at one end and closed at the other by a movable piston.
a) A glass tube is open at one end and closed at the other by a movable piston. The tube is filled with air warmer than that at room temperature, and a 384-Hz tuning fork is held …
a) A graduated cylinder with 18 ml of water will contain18gm of water, which equ
a) A graduated cylinder with 18 ml of water will contain18gm of water, which equals one mole of water molecules. If each ofthese water molecules were enlarged to the the size of a…
a) A group of 3 girls and 5 boys. How many ways can we line upthe 8 people so th
a) A group of 3 girls and 5 boys. How many ways can we line upthe 8 people so that the girls are together and the boys aretogether? b) A legal firm has 6 lawers and 3 new cases. H…
a) A group of 3 girls and 5 boys. How many ways can we line upthe 8 people so th
a) A group of 3 girls and 5 boys. How many ways can we line upthe 8 people so that the girls are together and the boys aretogether? b) A legal firm has 6 lawers and 3 new cases. H…
a) A hawk flies in a horizontal arc of radius 14.7 m at a constant speed of 2.1
a) A hawk flies in a horizontal arc of radius 14.7 m at a constant speed of 2.1 m/s. Find its centripetal acceleration. Answer in units of m/s2 b) It continues to fly along the sa…
a) A heat pump delivers 1000 calories to the inside of a house at 300 °K (27 °C)
a) A heat pump delivers 1000 calories to the inside of a house at 300 °K (27 °C). If the outside air temperature is 270 °K (-3 °C), how much mechanical work (in calories) must be …
a) A high speed bullet of mass 3.0 g and speed v strikes a block of mass 3.0 kg
a) A high speed bullet of mass 3.0 g and speed v strikes a block of mass 3.0 kg suspended from a light 1.0 m long string. The bullet becomes embedded in the block, which swings u…
a) A horizontal compass is placed 18 cm due south from a straight vertical wire
a) A horizontal compass is placed 18 cm due south from a straight vertical wire carrying a 45 -A current downward. In what direction does the compass needle point at this location…
a) A hot air balloon is traveling vertically up- ward at a constant speed of 4 m
a) A hot air balloon is traveling vertically up- ward at a constant speed of 4 m/s. When it is 27 m above the ground, a package is released from the balloon. After it is released,…
a) A hotdog vendor named Sam is walking from the southwest corner of Central par
a) A hotdog vendor named Sam is walking from the southwest corner of Central park to the Empire State Building. He starts at the intersection of 59th Street and Eighth Avenue, wal…
a) A hotdog vendor named Sam is walking from the southwest corner of Central par
a) A hotdog vendor named Sam is walking from the southwest corner of Central park to the Empire State Building. He starts at the intersection of 59th Street and Eighth Avenue, wal…
a) A human eardrum typically has an area of around 50 mm2. If you dive down to t
a) A human eardrum typically has an area of around 50 mm2. If you dive down to the bottom of that diving well, what is the force (in newtons) on the outside of your eardrum from t…
a) A integer form 1 to 5 is secretly chosen, what is the probability that you gu
a)A integer form 1 to 5 is secretly chosen, what is the probability that you guess a right number? b)Two fair dice. If you roll a 8 you lose. If it's not 8, then what is the proba…
a) A ladder with a length of 13.6 m and weight of 524.0 N rests against a fricti
a) A ladder with a length of 13.6 m and weight of 524.0 N rests against a frictionless wall, making an angle of 60.0 with the horizontal. Find the horizontal force exerted on the …
a) A ladybug with a velocity of 10.0 mm/s [W] crawls on a chair that is being pu
a) A ladybug with a velocity of 10.0 mm/s [W] crawls on a chair that is being pulled [W 50° N] at 40.0 mm/s. What is the velocity of the ladybug relative to the ground? b) An airp…
a) A large asteroid of mass 71700 kg is at rest far away from any planets or sta
a) A large asteroid of mass 71700 kg is at rest far away from any planets or stars. A much smaller asteroid, of mass 930 kg, is in a circular orbit about the first at a distance o…
a) A laser produces a beam of light whose average power is 4W. How much energy i
a) A laser produces a beam of light whose average power is 4W. How much energy is stored in a 3m length of the beam? Use c=3*10^8 b) If the area of the beam in part a) is .001m^2,…
a) A laser produces a beam of light whose average power is 4W. How much energy i
a) A laser produces a beam of light whose average power is 4W. How much energy is stored in a 3m length of the beam? Use c=3*10^8 b) If the area of the beam in part a) is .001m^2,…
a) A lawn service company uses a low-end mower for their yards. The mower costs
a) A lawn service company uses a low-end mower for their yards. The mower costs $2,000.00 initially, and then has an annual cost of $300.00 for gasoline and servicing. The company…
a) A light string is attatched to a heavy rope, and the whole thing is pulled ti
a) A light string is attatched to a heavy rope, and the whole thing is pulled tight. A wave is sent along the light string. When it hits the heavy rope, compared to the wave o…
a) A load cell has a force range from 0-8 N, which has a corresponding voltage o
a) A load cell has a force range from 0-8 N, which has a corresponding voltage output from -5 V (at O N) to 5 V(at 8 N). What is the sensitivity of this device, in V/N? :125hatist…