The quality of the sound heard on percussion of the chest; the intensification and prolongation of a sound by reflection or by vibration of a nearby object is known as:
a. pitch.
b. tone.
c. frequency.
d. resonance.

Jack and Jill are the only two residents in a neighbourhood, and they would like to hire a security guard. The value of a security guard is $50 per month to Jack and $90 per month to Jill. Irrespective of who pays the guard, the guard will protect the entire neighbourhood and charge $120 per month for the service. Suppose Jack earns $4,000 per month and Jill earns $8,000 per month.a. With a proportional tax of 1 percent on income, how much would Jack and Jill pay, and would it be enough to pay for the security guard?Jack would pay $ _____.Jill would pay $ _____.This tax _____ be enough to pay for the security guard.b. Suppose instead that Jack proposes a payment scheme under which Jack and Jill would each receive the same net benefit from hiring the guard. How much would Jack and Jill pay now?Jack would pay $ _____.Jill would pay $ _____.Would both Jack and Jill vote for this scheme? _____ an element has atomic number of 17 state the elements group and period number PLEASE HELP ME ASAP!!!!!! YOU GET 10 POINTS!!!!!!For reaction below, describe how its equilibrium could be shifted in the indicated direction.1. H2(g)+C12(g)2HC1(g)+thermal energy: shift to the left2.C(s) +O2(g)CO2+thermal energy: shift to the right Your class takes a field trip to a museum that has a display about the Quakers. Which of the following would you NOT expect to see as part of that display?A. Quakers are a subgroup of Christians.B. Quakers helped make incarceration a default punishment.C. Quakers lived predominately in Pennsylvania.D. Quakers helped draft the US Constitution. I need help quick! Q: The measure of Drag each tile to the correct box. Match each sentence from the passage with the statement that explains how it develops the authors thesis. what fraction is equal to 3 1/4 Mr. Kelly was checking out his items at Dunkin Donuts, he bought three bags of coffee that cost $6.75 each. There is a sales tax of 8.75%, how much will Mr. Kelly pay in total? HELP I NEED HELP ASAPHELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAPWhy would scientists conduct research on a newly discovered alternative fuel?A. To maintain the public dependence on fossil fuelsB. To maintain the success of the petroleum industry C. To confirm that the alternative fuel is cleaner than fuels currently used D. To confirm that the alternative fuel increases atmospheric carbon dioxde. What is Edwards message to sinners? What does he wish to teach sinners? Which statements describe the relationship between the value of a resource and scarcity? Check all that apply.A resource becomes less valuable as it becomes more scarce.A resource becomes less valuable as it becomes less scarce.A resource becomes more valuable as it becomes less scarce.A resource becomes more valuable as it becomes more scarce.O A resource's value is influenced by its scarcity.A resource's scarcity is determined by its value. Which of the following was not true of the reign of Louis XIV?a.power was stripped away from nobles and officialsc.the economy flourishedb.France fought in several warsd.he persecuted many Huguenots Find the volumes of the solids generated by revolving the regions bounded by the graphs of the equations about the given lines. y = root x y = 0 x = 3 the x-axis the y-axis the line x = 3 the line x = 6 In a tennis tournament, 25% of Sarahs serves were aces. Design a simulation to predict how many aces you expect Sarah to serve out of 50 serves.HELP PLEASE I'LL GIVE BRAINLIEST!!!!!!!!! -4r>16 I have to solve this for my math hw Does the following word have a negative or positive connotation? winsomepositivenegative The measure of Angle d is 150. What is the value of Measure of angle b + measure of angle c + measure of angle e? A jar contains n nickels and d dimes. There is a total of 257 coins in the jar. The value of the coins is $17.35. How many nickels and how many dimes are in the jar? Determine the y intercept Salma paid a total of $42 for 7 frozen meals. She had a coupon for $6 off the regular price of each meal. Each meal had the same regular price. What was the regular price of each meal