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A 0.075 kg toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.33 m/s in a horizontal circle of radius 0.47 m, as illustrated
At a lumberjack competition an axe with a mass of 1.25 kg is thrown at a target with a speed of 43 m/s. When it hits the target, it penetrates to a depth of 0.047 m. (a) What was the average force e
Use energy methods to calculate the speed of the climbers after the lower one has descended 1.80 m starting from rest. What would be the speed of the climbers after they had moved 1.80 m?
Calculate the magnitude and direction of the current induced in a circular ring of radius 16 cm and resistance 3.7 ohms that encircles the magnetic field region. Please show work.
A solution is made by dissolving 17.1 g of HCl in 661 mL ofwater. Calculate the pH of the solution. (Assume that the volume remains constant.)
What are the magnitude and the direction of the net (resultant) force exerted by these two charges on a negative point charge q3=-0.6nC located at the origin>? (k=8.99x10? N*m²/C²)
Which of Newton's laws best explains why the work done on the gas is the negative of the work done on the environment?
For table salt - ingredients are: potassium iodide, glucose(dextrose), and calcium silicate. Which of these would be the active ingredient?
What will be the limit on its mass resolution (in kg) for ions in this mass range, that is, those whose mass is on the order of that of a carbon atom?
A piece of lead with a mass of 27.3 g was heated to98.90 C and then dropped into 15.0 g of water at 22.50 C. THe final temperature was 26.32 C. Calculater the specific heat capacity of lead from thi
The straight sides of the slide are 80 in length and 10 apart with a semicircular bend at the end. For what slide extensions will the microphone detect a maximum of sound intensity?
A 10 lb block is attached to an unstretched spring of constant k = 12 lb/in. The coefficient of static and kinetic friction between the block and the plane are 0.6 and 0.4 respectively. if a force i
What is the ranking in solubility between these functional groups? (most soluble to least soluble)Amine, amide, carboxylic acid, carboxylic acid with salt,phenol, alcohol, ketone
Given that you performed the extraction in a conical vial with ascrew cap, what practical reason makes this sodium bicarbonate extraction less desirable than sodium hydroxide extraction?
What aspects of benzoic acid synthesis are "green" and are suitableto be scaled up to an industrial synthesis? What aspects of the synthesis are not so ""green" and are not amenable to an industrial
An automobile traveling at a constant speed rounds a circular curve of radius 300 feet in 7.5 seconds. if the curve causes the car coming out of the curve to move in a direction perpendicular to the
The human eye contains a molecule called 11-cis-retinalthat changes conformation when struck with light of sufficientenergy. The change in conformation triggers a series of events that results in an
A satellite has a mass of 5800 kg and is in a circular orbit 3.50 x 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.25 x 106 m. What is the tru
An amount of solid Ba(OH)2 is dissolved in water to make a final solution of 1520 mL. If the pH of this solution is found to be 12.11, how many grams of the base were added to make this solutio
For a speed of 20 m/s, at what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?
105.0 mL of a solution of quinine contains 126.0×10-3 mol of quinine. Quinine is monobasic with Kb = 7.90× 10-6 If this is titrated with 0.200 M HCl, what is the pH half-way
Two charged particles, Q1=+5nC and Q2= -3nC,are separated by 35cm. a) What is the electric potential energy of the pair? Explain the significance of the algebraic sign of your answer.
A 10-lb block is attached to an unstretched spring of constant k. If a force F is slowly applied to the block until the tension in the spring reaches 20 lb and then suddenly removed, k = 12 lb/in. D
If the root mean square speed of an O2 molecule is4.2 x 102 m/s at 25oC, what is the average speed of a Cl2 molecule at the same temperature?