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1) A 1.4 kg falling object (subject to the effects of aerodynamic drag) is 1800

1) A 1.4 kg falling object (subject to the effects of aerodynamic drag) is 1800 m high, traveling at 34 m/s and has not yet reached terminal speed. It first reaches terminal speed…

1) A 1.4-kg hawk, traveling west at 15 m/s, seizes a 0.20-kg dove. Just before b

1) A 1.4-kg hawk, traveling west at 15 m/s, seizes a 0.20-kg dove. Just before being seized, the dove was flying east. Just after catching the dove, the hawk's speed is 12 m/s, an…

1) A 1.4326 g of sample of a new compound has been analyzed and found to contain

1) A 1.4326 g of sample of a new compound has been analyzed and found to contain the following masses of elements, carbon, 0.7263 g; hydrogen, 0.08127 g; nitrogen, 0.1412 g; oxyge…

1) A 1.5 kg playground ball is moving with a velocity of 3.0m/s directed 30 degr

1) A 1.5 kg playground ball is moving with a velocity of 3.0m/s directed 30 degrees below the horizontal just before it strikesa horizontal surface. The ball leaves this surface 0…

1) A 1.500 m long uniform beam of mass 30.00 kg is supported by a wire as shown

1) A 1.500 m long uniform beam of mass 30.00 kg is supported by a wire as shown in the figure. The beam makes an angle of 10.00 degrees with the horizontal and the wire makes and …

1) A 10,000 kg freight car is rolling along a track at 3.00 m/s. Calculate the t

1) A 10,000 kg freight car is rolling along a track at 3.00 m/s. Calculate the time needed for a force of 1000 N to stop the car. 2) A car moving at 10 m/s (36 mph) crashes into a…

1) A 10,000 kg freight car is rolling along a track at 3.00 m/s. Calculate the t

1) A 10,000 kg freight car is rolling along a track at 3.00 m/s. Calculate the time needed for a force of 1000 N to stop the car. 2) A car moving at 10 m/s (36 mph) crashes into a…

1) A 10-year-old girl admitted for severe second- and third-degree burns followi

1) A 10-year-old girl admitted for severe second- and third-degree burns following her rescue from a burning house. Angela, a 10-year-old female, was transported by ambulance to t…

1) A 10.0 kg block on a table is connected by a string to a 63 kg mass, which is

1) A 10.0 kg block on a table is connected by a string to a 63 kg mass, which is hanging over the edge of the table. Assuming that frictional forces may be neglected, what is the …

1) A 10.0 kg box is released from rest on a 31.0 degree incline. If the box acce

1) A 10.0 kg box is released from rest on a 31.0 degree incline. If the box accelerates down the slope at a rate of 1.75 m/s2, the coefficient of kinetic friction between the box …

1) A 10.5-g bullet is fired into a stationary block of wood having mass m = 4.94

1) A 10.5-g bullet is fired into a stationary block of wood having mass m = 4.94 kg. The bullet imbeds into the block. The speed of the bullet-plus-wood combination immediately af…

1) A 100.0 mL solution containing 0.9797 g of maleic acid (MW = 116.072 g/mol) i

1) A 100.0 mL solution containing 0.9797 g of maleic acid (MW = 116.072 g/mol) is titrated with 0.2911 M KOH. Calculate the pH of the solution after the addition of 58.00 mL of th…

1) A 100.0-g sample of water at 27.0 o C is poured into a 76.2-g sample of water

1) A 100.0-g sample of water at 27.0oC is poured into a 76.2-g sample of water at 89.0oC. What will be the final temperature of the water? 2) A calorimeter contains 240 g of water…

1) A 100.0-mL buffer solution is 0.175 M in HClO and 0.150 M in NaClO. Part A: W

1) A 100.0-mL buffer solution is 0.175 M in HClO and 0.150 M in NaClO. Part A: What is the initial pH of this solution? Part B: What is the pH after addition of 150.0 mg of HBr? P…

1) A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose di

1) A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. What is the magnitude of the friction force required to keep the car from slidin…

1) A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 6

1) A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 675-kg car traveling with a velocity of +2.15 m/s. Assume that the transmission of the van is in neu…

1) A 1071-kg car and a 2060-kg pickup truck approach a curve on the expressway t

1) A 1071-kg car and a 2060-kg pickup truck approach a curve on the expressway that has a radius of 273 m . A) At what angle should the highway engineer bank this curve so that ve…

1) A 11 kg crate is moved from the ground up a loading platform 6.3 m long and 1

1) A 11 kg crate is moved from the ground up a loading platform 6.3 m long and 1.8 m high. Assume the coefficient of kinetic friction is 0.23. What is the actual mechanical advant…

1) A 12,000 kg spacecraft is in deep space when it receives instructions to meet

1) A 12,000 kg spacecraft is in deep space when it receives instructions to meet another spacecraft near a small asteroid. To reach its target in time it must initially accelerate…

1) A 12-g bullet with an initial speed of 299 m/s is shot directly at a 1.1-kg w

1) A 12-g bullet with an initial speed of 299 m/s is shot directly at a 1.1-kg wooden block, which rests on a frictionless surface. The bullet passes through the block, after whic…

1) A 120 N force is applied at an angle of 30.0 degrees above the horizontal to

1) A 120 N force is applied at an angle of 30.0 degrees above the horizontal to a 4.00 kg box. The box moves a horizontal distance of 8.00 meters. The change in the kinetic energy…

1) A 1200 kg car pulls a 480 kg trailer. The car exerts a horizontal force of 35

1) A 1200 kg car pulls a 480 kg trailer. The car exerts a horizontal force of 3540 N against the ground in order to accelerate. What force does the car exert on the trailer? Assum…

1) A 14 gram clay mass moving at 50 m/s collides into an 86 gram clay mass at re

1) A 14 gram clay mass moving at 50 m/s collides into an 86 gram clay mass at rest. There are no external forces acting on these masses during the collision. What is the speed in …

1) A 15 cm long spring is attached to the ceiling. When a 2.2 kg mass is hung fr

1) A 15 cm long spring is attached to the ceiling. When a 2.2 kg mass is hung from it, the spring stretches to a length of 20 cm. (a) What is the spring constant k? (b) How long i…

1) A 15% solution of sodium hypochlorite (NaOCl), a 75%-pure granular calcium hy

1) A 15% solution of sodium hypochlorite (NaOCl), a 75%-pure granular calcium hypochlorite [Ca(OCl)2] , and pure chlorine gas (Cl2) are each available to be used as the primary di…

1) A 15.0ML solution of 0.500 M hydrofluoric acid (HF-Ka = 7.2*10 -4 ) is titrat

1) A 15.0ML solution of 0.500 M hydrofluoric acid (HF-Ka = 7.2*10-4) is titrated with a 0.250 M solution of NaOH. Calculate the pH of the solution after the addition of the volume…

1) A 15.1 mL sample of a 0.446 M aqueous hypochlorous acid solution is titrated

1) A 15.1 mL sample of a 0.446 M aqueous hypochlorous acid solution is titrated with a 0.397 M aqueous potassium hydroxide solution. What is the pH at the start of the titration, …

1) A 150% local currency return in Brazil is higher than a 15% dollar return in

1) A 150% local currency return in Brazil is higher than a 15% dollar return in the U.S.        a) because arbitrage opportunities exist        b) when the inflation controls are …

1) A 1500kg rocket is launched directly upward from the surface of the moon with

1) A 1500kg rocket is launched directly upward from the surface of the moon with an initial speed of 1000m/s.(R=1.74x10^6 m; M=7.36x10^22 kg). Assume the rocket achieves this spee…

1) A 18.0 L sample of hydrogen gas has a pressure of 25.0 atm. What volume would

1) A 18.0 L sample of hydrogen gas has a pressure of 25.0 atm. What volume would this gas occupy at 9.30 atm? 2) A balloon filled with helium has a volume of 20.5 L at 309 K. What…

1) A 19 N horizontal force F pushes a block weighing 6.0 N against a verticall w

1) A 19 N horizontal force F pushes a block weighing 6.0 N against a verticall wall. The coefficient of static friction between the wall the block is 0.68 and the coefficient of k…

1) A 1mg dust particle carrying a net charge of 1nC, is dropped btwn the plates

1)   A 1mg dust particle carrying a net charge of 1nC, is dropped btwn the plates of a parallel-plate capacitor. Theplates are vertical, separated by 5mm and have sides that are 1…

1) A 2,494-kilogram roller coaster car is approaching a hill. At its top, the hi

1) A 2,494-kilogram roller coaster car is approaching a hill. At its top, the hill can be described by a circle with radius 9 m. Draw a proper freebody diagram for the car at the …

1) A 2,494-kilogram roller coaster car is approaching a hill. At its top, the hi

1) A 2,494-kilogram roller coaster car is approaching a hill. At its top, the hill can be described by a circle with radius 9 m. Draw a proper freebody diagram for the car at the …

1) A 2.0 mm diameter iron ball is charged to +46 nC. What fraction of its electr

1) A 2.0 mm diameter iron ball is charged to +46 nC. What fraction of its electrons have been removed? The density of iron is 7,870 kg/m3. 2) The magnetic field of the brain has b…

1) A 2.0 mm diameter iron ball is charged to +46 nC. What fraction of its electr

1) A 2.0 mm diameter iron ball is charged to +46 nC. What fraction of its electrons have been removed? The density of iron is 7,870 kg/m3. 2) The magnetic field of the brain has b…

1) A 2.00×10 4 kg railroad car is rolling at 4.00 m/swhen a 1000 kg load of grav

1) A 2.00×104 kg railroad car is rolling at 4.00 m/swhen a 1000 kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded? 2) A 320 g bird …

1) A 2.00×10 4 kg railroad car is rolling at 4.00 m/swhen a 1000 kg load of grav

1) A 2.00×104 kg railroad car is rolling at 4.00 m/swhen a 1000 kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded? 2) A 320 g bird …

1) A 2.41 mol sample of an ideal gas expands reversibly and isothermally at 403

1) A 2.41 mol sample of an ideal gas expands reversibly and isothermally at 403 K until its volume is doubled. What is the increase in entropy of the gas? 2)A 30.6 g block of copp…

1) A 2.8 m long straight horizontal wire carrying a current of 4.9 A along the +

1) A 2.8 m long straight horizontal wire carrying a current of 4.9 A along the +x-direction is in a region of uniform magnetic field, B. If the mass of this wire is 0.4 kg, find t…

1) A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees wit

1) A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 150 N is applied to the box to pull it up the incline. The applied for…

1) A 20.0-W laser emits a beam of light 4.0 mm in diameter. The laser is aimed a

1) A 20.0-W laser emits a beam of light 4.0 mm in diameter. The laser is aimed at the Moon. By the time it reaches the Moon, the beam has spread out to a diameter of 85 km. What w…

1) A 200 g object moves in simple harmonic motion such that its amplitude decrea

1) A 200 g object moves in simple harmonic motion such that its amplitude decreases by 1.5% with each comple oscillation a) If its initial amplitude is 15cm what will the amplitud…

1) A 200 g rod hangs from a pin located at 20 cm from the left edgeof the rod. T

1) A 200 g rod hangs from a pin located at 20 cm from the left edgeof the rod. There is 300g mass hanging from the rod at a distanceof 50 cm from the left edge of the rod. If the …

1) A 200-g object is held pressed agaist a vertical spring with its lower end fi

1) A 200-g object is held pressed agaist a vertical spring with its lower end fixed on the floor. The spring has a force constant of 100 N/m and is not connected to the object. If…

1) A 200.0 ML solution of 1.3 x 10 -3M AgNO3 is mixed with 100mL of a 4.5 x 10-5

1) A 200.0 ML solution of 1.3 x 10 -3M AgNO3 is mixed with 100mL of a 4.5 x 10-5M Na2S solution. Assume that both of these are completely soluble. Given Ksp for AgS(s) = 1.6x10^-4…

1) A 21.30 mL volume of 0.0975 M NaOH was used to titrate 25.0 mL of a weak mono

1) A 21.30 mL volume of 0.0975 M NaOH was used to titrate 25.0 mL of a weak monoprotic acid solution to the stoichiometric point. Determine the molar concentration of the weak aci…

1) A 23 g bullet traveling 260 m/s penetrates a 2.7 kg block of wood and emerges

1) A 23g bullet traveling 260 m/s penetrates a 2.7 kg block of wood and emerges cleanly at 205m/s. If the block is stationary on a frictionless surface when hit, how fast does it …

1) A 25.0 g sample of CO 2 is placed in an 8.00 L steel tank. What is the pressu

1) A 25.0 g sample of CO2 is placed in an 8.00 L steel tank.   What is the pressure in torr in the tank at 45oC? 2) At what temperature in oC would 25.0 g of NH3 in a 27 L steel t…

1) A 25.0 mL sample of 0.150 M hydrocyanic acid is tritated with a 0.150 M NaOH

1) A 25.0 mL sample of 0.150 M hydrocyanic acid is tritated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of hydrocyanic acid = 4.9×10^-10 2) A 25.…