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1. A 150-W heater was placed in 1.00 kg of methanol and turned on for exactly 1

1. A 150-W heater was placed in 1.00 kg of methanol and turned on for exactly 1 min. The temperature increased by 3.54 C. Assuming that all the heat is absorbed by the methanol, c…

1. A 1500 kg mix having 15% salt is fed in an evaporator. A total of 500 kg of c

1. A 1500 kg mix having 15% salt is fed in an evaporator. A total of 500 kg of concentrate remained. Determine the weight of water removed and the composition of the concentrate. …

1. A 1500 kg mix having 15% salt is fed in an evaporator. A total of 500 kg of c

1. A 1500 kg mix having 15% salt is fed in an evaporator. A total of 500 kg of concentrate remained. Determine the weight of water removed and the composition of the concentrate. …

1. A 1500kg car takes a 50m radius unbanked curve at 15m/s. What is the size of

1. A 1500kg car takes a 50m radius unbanked curve at 15m/s. What is the size of the friction force on the car? 2. A new car is tested on a 200m diameter track. If the car speeds u…

1. A 15x15 concrete pile of 90 length is used to support a vertical load in a 90

1. A 15x15 concrete pile of 90 length is used to support a vertical load in a 90' deep heavily over- consolidated clay layer followed by a deep sand layer. Assuming that the groun…

1. A 16-year-old male has been admitted to the nursing unit after breaking his l

1. A 16-year-old male has been admitted to the nursing unit after breaking his leg in a car accident. He seems sullen and just wants to watch TV. He answers the nurse’s questions …

1. A 16.4-m length of hose is wound around a reel, which is initially at rest. T

1. A 16.4-m length of hose is wound around a reel, which is initially at rest. The moment of inertia of the reel is 0.39 kg · m2, and its radius is 0.173 m. When the reel is turni…

1. A 16.6g sample of sodium bicarbonate (NaHCO3) is decomposed by heating. How m

1. A 16.6g sample of sodium bicarbonate (NaHCO3) is decomposed by heating. How many grams of Na2CO3 remains? a. How many combined grams of CO2 and H2O in question 1? 2.. A 4.832g …

1. A 160 L kiln is used for vutrifying ceramics. It is currently operating at 11

1. A 160 L kiln is used for vutrifying ceramics. It is currently operating at 1145 degrees Celsius and the pressure is 1.100 atm. How many miles of air molecules are within the co…

1. A 17 g bullet is fired into the bob of a ballistic pendulum of mass 1.6 kg. W

1. A 17 g bullet is fired into the bob of a ballistic pendulum of mass 1.6 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The lengt…

1. A 18.0 L gas cylinder is filled with 9.80 moles of gas. The tank is stored at

1. A 18.0 L gas cylinder is filled with 9.80 moles of gas. The tank is stored at 25 C . What is the pressure in the tank? Express your answer to three significant figures and incl…

1. A 19-g paper clip is attached to the rim of a phonograph record with a diamet

1. A 19-g paper clip is attached to the rim of a phonograph record with a diameter of 47 cm, spinning at 2.6 rad/s. What is the magnitude of its angular momentum (in kg m2/s)? Rou…

1. A 1kg ball with velocity 20m/s bounces perpendicularly offa wall so it has th

1. A 1kg ball with velocity 20m/s bounces perpendicularly offa wall so it has the same speed afterward if the average force is20000N then how long in milliseconds did the collisio…

1. A 1m by 2m window of thickness 2mm between an insidetemperature of 20°C and a

1. A 1m by 2m window of thickness 2mm between an insidetemperature of 20°C and an outside temperature of 0°Callows a loss of 120,000J each min. What is its thermalconductivity?   …

1. A 2 200-kg pile driver is used to drive a steel I-beam into the ground. The p

1. A 2 200-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 3.20 m before coming into contact with the top of the beam, and it drives the beam…

1. A 2,022-kg car is moving up a road with a slope (grade) of 20% while speeding

1. A 2,022-kg car is moving up a road with a slope (grade) of 20% while speeding up at a rate of 2.1 m/s^2. What is the direction and magnitude of the frictional force? (define po…

1. A 2,022-kg car is moving up a road with a slope (grade) of 20% while speeding

1. A 2,022-kg car is moving up a road with a slope (grade) of 20% while speeding up at a rate of 2.1 m/s^2. What is the direction and magnitude of the frictional force? (define po…

1. A 2,200-kg pile driver is used to drive a steel I-beam into the ground. The p

1. A 2,200-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.40 m before coming into contact with the top of the beam, and it drives the beam…

1. A 2,372-kg car is moving down a road with a slope (grade) of 10% at a constan

1. A 2,372-kg car is moving down a road with a slope (grade) of 10% at a constant speed of 16 m/s. What is the direction and magnitude of the frictional force? (define positive in…

1. A 2-kg pellet travels with velocity 100 m/s to the right when it collides wit

1. A 2-kg pellet travels with velocity 100 m/s to the right when it collides with a 38-kg hanging mass which is initially at rest. After the collision, the pellet remains lodged i…

1. A 2-mol sample of potassium chlorate decomposes to form potassium chloride an

1. A 2-mol sample of potassium chlorate decomposes to form potassium chloride and oxygen gas. The reaction was accomplished with release of 78.0 kJ heat. Write a balanced thermoch…

1. A 2.0 cm tall object is placed 80.0 cm to the left of ascreen. You want to us

1. A 2.0 cm tall object is placed 80.0 cm to the left of ascreen. You want to use a thin converging lens with a +15.0cm focal length to form a real image of this object onto thesc…

1. A 2.0 kg ball is attached to a vertical post with two strings, one 2 m long a

1. A 2.0 kg ball is attached to a vertical post with two strings, one 2 m long and the other 1 m long. If the ball is set whirling in a horizantal circle, what is the minimum spee…

1. A 2.0 kg block is released from rest at the top of 22 degree frictionless inc

1. A 2.0 kg block is released from rest at the top of 22 degree frictionless inclined plane of height 0.65 m. At the bottom of the inclined plane, it collides with and sticks to a…

1. A 2.0 kg block sits on a 4.0 kg block that is on a frictionless table. The co

1. A 2.0 kg block sits on a 4.0 kg block that is on a frictionless table. The coefficients of friction between the blocks are µs = 0.60 and µk = 0.20. (a) What is the maximum forc…

1. A 2.0 x 10^3 kg sailboat experiences an eastward force of 3.0 x 10^3 N by the

1. A 2.0 x 10^3 kg sailboat experiences an eastward force of 3.0 x 10^3 N by the ocean tide and a wind force against its sails with magnitude of 6.0 x 10^3 N directed toward the n…

1. A 2.00 kg ball is attached to the ceiling by a 1.00 m long string. The height

1. A 2.00 kg ball is attached to the ceiling by a 1.00 m long string. The height of the room is 3.0 m. (a) What is the gravitational potential energy of the ball relative to the c…

1. A 2.00-mol sample of a diatomic ideal gas expands slowly and adiabatically fr

1. A 2.00-mol sample of a diatomic ideal gas expands slowly and adiabatically from a pressure of 5.06 atm and a volume of 13.0 L to a final volume of 30.2 L. (a) What is the final…

1. A 2.00-mol sample of a diatomic ideal gas expands slowly and adiabatically fr

1. A 2.00-mol sample of a diatomic ideal gas expands slowly and adiabatically from a pressure of 5.06 atm and a volume of 13.0 L to a final volume of 30.2 L. (a) What is the final…

1. A 2.000 grams of a salt are dissolved in enough water to make a solution with

1. A 2.000 grams of a salt are dissolved in enough water to make a solution with a volume of 250.0 mL The solution is titrated with a 0.1111 M sodium hydroxide solution and reache…

1. A 2.05 kg ball is attached to the bottom end of a length of 9 lb (40.1 N) fis

1. A 2.05 kg ball is attached to the bottom end of a length of 9 lb (40.1 N) fishing line. The top end of the fishing line is held stationary. The ball is released from rest while…

1. A 2.2nC charge is at the origin and a -3.2nC charge is at x = 1.4cm a) At wha

1. A 2.2nC charge is at the origin and a -3.2nC charge is at x = 1.4cm a) At what x-coordinate could you place a proton so that it would experience no net force? b) Would the net …

1. A 2.5-K ohm resistor and a 4.4-mF capacitor are in series, and the combinatio

1. A 2.5-K ohm resistor and a 4.4-mF capacitor are in series, and the combination is connected across a 15-V power supply. Find the charge on the capacitor and current in the resi…

1. A 2.61-m-tall container is filled to the brim, partway with mercury and the r

1. A 2.61-m-tall container is filled to the brim, partway with mercury and the rest of the way with water. The container is open to the atmosphere. What must be the depth of the m…

1. A 2.D 3.C 4.E through F 5. B 6. E through B 7.B through F Question pH for a s

1. A 2.D 3.C 4.E through F 5. B 6. E through B 7.B through F Question pH for a solution of a weak acid pH for a buffer with equal concentrations of a weak acid and the salt of the…

1. A 20 L cylinder containing helium gas at a pressure of 29.5 atm is used to fi

1. A 20 L cylinder containing helium gas at a pressure of 29.5 atm is used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure (in…

1. A 20 cm long metal rod is pulled along two frictionless conducting rails at c

1. A 20 cm long metal rod is pulled along two frictionless conducting rails at constant speed of 5 m/s. The rails have negligible resistance, and the rod has a resistance of 0.52 …

1. A 20 kg object is being pulled with F Newton force which has 60 degrees with

1. A 20 kg object is being pulled with F Newton force which has 60 degrees with ground 112j work is done to move 50 m distance . Assuming a frictional surface , calculate F. 2. At…

1. A 20 kg rock is on the edge of a 100 m cliff. The rock falls from the cliff.

1. A 20 kg rock is on the edge of a 100 m cliff. The rock falls from the cliff. What speed does the rock have as it strikes the ground? 2. Tarzan swings down from a tree limb that…

1. A 20 kg rock is on the edge of a 100 m cliff. The rock falls from the cliff.

1. A 20 kg rock is on the edge of a 100 m cliff. The rock falls from the cliff. What speed does the rock have as it strikes the ground? 2. Tarzan swings down from a tree limb that…

1. A 20 year old male complains of sudden onset shortness of breath at 24 times

1. A 20 year old male complains of sudden onset shortness of breath at 24 times per minute and his pulse aximetry is 85% aCoach him on slowing his rate of respiration bApply oxyge…

1. A 20-year, 8% semiannual coupon bond with a par value of $1,000 may be called

1. A 20-year, 8% semiannual coupon bond with a par value of $1,000 may be called in 5 years at a call price of $1,040. The bond sells for$1,100. (Assume that the bond has just bee…

1. A 20.0 ml sample of hydrofluoric acid ( ka= 7.1 x 10^-4 ) is titrated to equi

1. A 20.0 ml sample of hydrofluoric acid ( ka= 7.1 x 10^-4 ) is titrated to equivalence with 37.12 ml of 0.1211 M NaOH. What is the pH of the resulting solution 2. What is the sol…

1. A 200 g mass resting on a frictionless surface is attached to a spring with a

1. A 200 g mass resting on a frictionless surface is attached to a spring with a stiffness of 40.0 N/m. At t = 0 it is 0.100 m to the left of the equilibrium position and travelin…

1. A 2000N crate rests on the floor A) how much work is required to move it at c

1. A 2000N crate rests on the floor A) how much work is required to move it at constant speed 6m across the floor against a friction force of 300N? B) how much work is done to lif…

1. A 2006 paper by Margeret Levenstein and Valerie Suslow (“What Determines Cart

1. A 2006 paper by Margeret Levenstein and Valerie Suslow (“What Determines Cartel Success?”) found that although cheating is a common cause of why cartels broke down, the followi…

1. A 200kg roller-coaster car is on a frictionless track initially moving at 3 m

1. A 200kg roller-coaster car is on a frictionless track initially moving at 3 m/s at the top of the first hill. What is the speed of the roller coaster at each of the peaks of th…

1. A 2014 study by the reputable Gallup organization estimates that 44% of U.S.

1. A 2014 study by the reputable Gallup organization estimates that 44% of U.S. adults are underemployed. Underemployed means the person wants to work full time but is employed pa…

1. A 208 volt, single phase motor can operate on a 120/208 volt, 3 phase, 4 wire

1. A 208 volt, single phase motor can operate on a 120/208 volt, 3 phase, 4 wire system. (True or False) 2. A #4/0 copper conductor in 430 C ambient atmosphere has an ampacity of …

1. A 208 volt, single phase motor can operate on a 120/208 volt, 3 phase, 4 wire

1. A 208 volt, single phase motor can operate on a 120/208 volt, 3 phase, 4 wire system. (True or False) 2. A #4/0 copper conductor in 430 C ambient atmosphere has an ampacity of …