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a) A sample of tris(hyroxymethyl)aminomethane (H2NC(CH2OH)3), which is a base, w

a) A sample of tris(hyroxymethyl)aminomethane (H2NC(CH2OH)3), which is a base, with a mass of 0.6247 g is dissolved in water and used to standardize a solution of hydroiodic acid.…

a) A shop sign weighing 210N hangs from the end of a uniform180-N beam as shown

a) A shop sign weighing 210N hangs from the end of a uniform180-N beam as shown in (Figure 1) . b) Find the horizontal force exerted by the hinge on the beam at the wall. Express …

a) A single 30000 kg railroad hopper car is freely rolling on a level track with

a) A single 30000 kg railroad hopper car is freely rolling on a level track with an initial speed of 5 m/s. As it rolls under a loading platform, 90000 kg of coal is dumped into t…

a) A single 30000 kg railroad hopper car is freely rolling on a level track with

a) A single 30000 kg railroad hopper car is freely rolling on a level track with an initial speed of 5 m/s. As it rolls under a loading platform, 90000 kg of coal is dumped into t…

a) A single transmission line is 40m above the surface of the Earth and carries

a) A single transmission line is 40m above the surface of the Earth and carries 2000A of curent. What is the peak magnetic field at ground level directly under the wire? b) Suppos…

a) A siren produces a sound that has an intensity level of 120dB at a distance o

a) A siren produces a sound that has an intensity level of 120dB at a distance of 2.0 m. Treat the siren as a point source ofspherical waves. Find the intensity in decibels heard …

a) A skier traveling at 28 m/s encounters a 24 degree slope. If you could ignore

a) A skier traveling at 28 m/s encounters a 24 degree slope. If you could ignore friction, to the nearest meter, how far up the hill does he go? b) If the coefficient of kinetic f…

a) A solid cylindrical pulley with a radius of 15.0 cm is spinning at a rate of4

a) A solid cylindrical pulley with a radius of 15.0 cm is spinning at a rate of45.0 rpm. If the mass of the pulley is 30.0 kg, what is the pulley's angular momentum? b) The pulley…

a) A solution is composed of 1.10 m o l cyclohexane ( P ? c y = 97.6 t o r r ) a

a)  A solution is composed of 1.10mol  cyclohexane (P?cy=97.6 torr) and 2.60mol  acetone (P?ac=229.5 torr). What is the total vapor pressure Ptotal above this solution? Express yo…

a) A source of electromagnetic waves radiates power uniformly in all directions

a) A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 5.00 km from the source, a detector measures the intensity …

a) A spaceship flies by Earth at 0.90 c . It fires a rocket at 0.73 c in the bac

a) A spaceship flies by Earth at 0.90c. It fires a rocket at 0.73c in the backward direction relative to the spaceship. What is the velocity of the rocket relative to Earth? c b) …

a) A speaker\'s table has 10 chairs in a row of the 10 people to be sealed 4 are

a) A speaker's table has 10 chairs in a row of the 10 people to be sealed 4 are left-handed and 6 are right-handed. To avoid elbowing each other while eating, the left-handed peop…

a) A spring attached to a ceiling is stretched 1.96 m by a 4 kg mass. Find the H

a) A spring attached to a ceiling is stretched 1.96 m by a 4 kg mass. Find the Hooke's Law spring constant k. (9.8m/sec = acc. due to grav) b) If the mass is set into motion in a …

a) A square coil (not a solenoid!) has N = 3920 turns and side s = 3.59 m carrie

a)A square coil (not a solenoid!) hasN=3920turns and sides=3.59m carries currentI=72.3A. Find the magnetic field at the center of the square. NOTE: A square is four line segments.…

a) A stationary transducer sends an ultrasound signal of 3.500 MHz that is refle

a) A stationary transducer sends an ultrasound signal of 3.500 MHz that is reflected from a moving object that is located in a fluid (velocity of sound in fluid is 1520 m/s). The …

a) A stellar-mass black hole has the mass of the sun (1.9 x 1033 grams), and a r

a) A stellar-mass black hole has the mass of the sun (1.9 x 1033 grams), and a radius of 2.9 kilometers. i) What would be the tidal acceleration across a human at a distance of 10…

a) A stellar-mass black hole has the mass of the sun (1.9 x 1033 grams), and a r

a) A stellar-mass black hole has the mass of the sun (1.9 x 1033 grams), and a radius of 2.9 kilometers. i) What would be the tidal acceleration across a human at a distance of 10…

a) A store\'s normal opening hours are from 9am to 5pm. The store keeper is thin

a) A store's normal opening hours are from 9am to 5pm. The store keeper is thinking about extending these hours to 8pm. To determine if this may be profitable the manager experime…

a) A student A weighed .50 Ca(OH)2 for his saturated solution and student B weig

a) A student A weighed .50 Ca(OH)2 for his saturated solution and student B weighed 0.23 g, Both students dissolved it in 60 ml of water and both had solid left in their solution …

a) A system does work on the surroundings equal to 64 J and the change in energy

a) A system does work on the surroundings equal to 64 J and the change in energy is -213 J. Calculate the heat  J b) If 6.40 kJ of heat is needed to raise the temperature of a sam…

a) A temperate bacteriophage has the gene order x1 x2 x3 att x4 x5. What is the

a) A temperate bacteriophage has the gene order x1 x2 x3 att x4 x5. What is the gene order of the prophage b) Can the lytic P1 phage infect the lysogen produced by integration of …

a) A theorem from class says that if we have 5 vectors in P4, then they have to

a) A theorem from class says that if we have 5 vectors in P4, then they have to be linearly dependent. But this theorem says nothing about whether or not these vectors span the sp…

a) A thin, uniform rod has a length of 0.30m, mass of 0.15kg, and is attached by

a) A thin, uniform rod has a length of 0.30m, mass of 0.15kg, and is attached by a hinge at the point P. A uniform magnetic field B = 0.55T is directed perpendicular to the plane …

a) A toy car of mass m = 1.46 kg is on a circular track of radius r = 13.1 cm. T

a) A toy car of mass m = 1.46 kg is on a circular track of radius r = 13.1 cm. The car starts at initial speed vo = 1.03 m/s, and accelerates at a constant rate to final speed vf …

a) A transformer draws 28 W of power from a 220 V power line, stepping the volta

a) A transformer draws 28 W of power from a 220 V power line, stepping the voltage down to 8 V. What will be the equivalent resistance of the input circuit? b) The magnetic field …

a) A triathlon consisting of swimming, cycling, and running is one of the more s

a) A triathlon consisting of swimming, cycling, and running is one of the more strenuous amateur sporting events. An article reports on a research study involving sixteen male tri…

a) A type of supercapacitor can withstand a maximum of 3.0 V across its plates.

a) A type of supercapacitor can withstand a maximum of 3.0 V across its plates. Show using a diagram how to combine a number of these capacitors so that current can be delivered a…

a) A typical large asteroid in our solar system has an approximate mass of 1.0 x

a) A typical large asteroid in our solar system has an approximate mass of 1.0 x 1018 kg and an orbital speed of 18000 m/s. Determine the amount of kinetic energy possessed by thi…

a) A uniform disk is constrained to rotate about an axis passing through its cen

a) A uniform disk is constrained to rotate about an axis passing through its center and perpendicular to the plane of the disk. If the disk starts from rest and is then brought in…

a) A uniform meter stick with a mass of 172 g is supported horizontally by two v

a) A uniform meter stick with a mass of 172g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark What is the tension in the str…

a) A uniform steel beam of length 5.8 m has a mass of 420 kg. One end of the bea

a) A uniform steel beam of length 5.8 m has a mass of 420 kg. One end of the beam is bolted to a vertical wall. The beam is held in a horizontal position by a cable attached betwe…

a) A user on the internet with IP address 125.1.2.7 wants to browse a webpage on

a) A user on the internet with IP address 125.1.2.7 wants to browse a webpage on the webserver. The user enters the address http://14.1.2.4 in a web browser; will the user be able…

a) A vapor mixture of 0.200 moles of methanol(1) and 0.300 moles of ethanol(2) i

a) A vapor mixture of 0.200 moles of methanol(1) and 0.300 moles of ethanol(2) is compressed at 20 oC. Calculate the pressure at which the first liquid forms and the mole fraction…

a) A vapor mixture of 0.200 moles of methanol(1) and 0.300 moles of ethanol(2) i

a) A vapor mixture of 0.200 moles of methanol(1) and 0.300 moles of ethanol(2) is compressed at 20 oC. Calculate the pressure at which the first liquid forms and the mole fraction…

a) A very large tank initially contains 15 gallons of saltwater containing 6 pou

a) A very large tank initially contains 15 gallons of saltwater containing 6 pounds of salt. Saltwater containing 1 pound of salt per gallon is pumped into the top of the tank at …

a) A weight is connected to a spring. When the system is in balance it is still

a) A weight is connected to a spring. When the system is in balance it is still (not moving). When the weight is moved from it's balance point and then released (at the time t=0 s…

a) A wire 15.0 m long and having a mass of 100 g is stretched under a tension of

a) A wire 15.0 m long and having a mass of 100 g is stretched under a tension of 200 N. If two disturbances, separated in time by 0.030 s, are generated one at each end of the wir…

a) A wire 15.0 m long and having a mass of 100 g is stretched under a tension of

a) A wire 15.0 m long and having a mass of 100 g is stretched under a tension of 200 N. If two disturbances, separated in time by 0.030 s, are generated one at each end of the wir…

a) A wire made from zinc with a cross-section of diameter 0.810 mm carries a cur

a) A wire made from zinc with a cross-section of diameter 0.810 mm carries a current of 10.0 A. Calculate the "areal current density"; in other words, how many electrons per squar…

a) A wooden block of mass M = 2.64 kg is rest on a frictionless, horizontal tabl

a) A wooden block of mass M = 2.64 kg is rest on a frictionless, horizontal table attached to the end of an unstretched spring (k = 237 N/m). A bullet of mass m = 8.51 g is fired …

a) A)What are government\'s fiscal policy options for ending severe demand-pull

a) A)What are government's fiscal policy options for ending severe demand-pull inflation? B) Use the aggregate demand-aggregate supply model to show the impact of these policies o…

a) A10 kg block is hanging from a rope. Find the (magnitude of the) tension in t

a) A10 kg block is hanging from a rope. Find the (magnitude of the) tension in the rope when i) the block is stationary. ii) the block is moving upward with a steady speed of 5.0 …

a) A=C(R(A,B,C)) b) (R(A,B,C)) c) R(A,B,C)*S(C,D,E) f) R(A,B,C)-S(A,B,C) g)

a) A=C(R(A,B,C)) b) <A,B>(R(A,B,C)) c) R(A,B,C)*S(C,D,E) f) R(A,B,C)-S(A,B,C) g) R(A,B,C)xS(A,B,C)

a) About 95% of the time the rent increases by $80. b) We are 95% confident that

a) About 95% of the time the rent increases by $80. b) We are 95% confident that the average increase in rent is between about $0 and $160. c) There is about a 3% chance that the …

a) According to Einstein\'s general theory of relativity, which of the following

a) According to Einstein's general theory of relativity, which of the following statement is true? a) A clock on the ground of earth runs slower than a clock on a GPS satellite. b…

a) According to the Bohr model of the hydrogen atom, energy levels are given as

a) According to the Bohr model of the hydrogen atom, energy levels are given as En= -13.6 eV/n2 . Determine hydrogen’s first four energy levels. n=4, E = ___________ n=3, E = ____…

a) According to the attached graph, the minimum size of an object that could cau

a) According to the attached graph, the minimum size of an object that could cause a mass extinction is a little less than _____. A. 10 m B. 100 m C. 10 km D. 100 km b) Based on t…

a) According to the attached graph, the minimum size of an object that could cau

a) According to the attached graph, the minimum size of an object that could cause a mass extinction is a little less than _____. A. 10 m B. 100 m C. 10 km D. 100 km b) Based on t…

a) According to the law of demand and based on the graph, if the price per pizza

a) According to the law of demand and based on the graph, if the price per pizza falls from $20 to $15, what will happen to quantity demanded? b) If government places a binding pr…

a) Activity G14 is scheduled to start on day 13th, as preceding activity C12 end

a) Activity G14 is scheduled to start on day 13th, as preceding activity C12 ends on day 12. b) i. On the start of day 35, activity F8 on the critical path is scheduled to start. …