A Ferris Wheel, 24.0 m in diameter, rotates once every 12.5s. What is the fractional change in a person's apparent weight: a) at the top, and b) at the bottom?
58,139 results, page 68

Math
The height (in feet) of a small weight oscillating at the end of a spring is h(t) = 0.5 cos(2t) where t is in seconds, 0 ≤ t ≤ 5. (This is calculus. Use radians!) (a)Calculate the weight’s average velocity over the time interval 1 ≤ t ≤ 3. Show ... 
math
In a science experiment, the temperature fell 63 degrees Fahrenheit in 9 minutes. If the temperature fell at the same rate every minute, how many degrees did it change each minute? 63 divide by 9 = 7 
Physics
an 88kg cardboard box is being pulled along a level floor. the coefficient of static friction between the box and the floor is 0.23, and the sliding friction is 0.12. What is the weight of the box? What force is needed to start the box moving? What force is needed to keep the ... 
physics
1. A solid copper cylinder hangs at the bottom of a steel wire of negligible mass. The top end of the wire is fixed. When the wire is struck, it emits sound with a fundamental frequency of 300 Hz. The copper cylinder is then submerged in water so that half its volume is below ... 
physics
A solid copper object hangs at the bottom of a steel wire of negligible mass. The top end of the wire is fixed. When the wire is struck, it emits a sound with a fundamental frequency of 135 Hz. The copper object is then submerged in water so that half its volume is below the ... 
English
Can someone please help me proof read my paper and help me to know where my errors are and how I can better this paper? Is this good for a descriptive essay? Is their something I should elaborate more or less on? Are my paragraphs ok or do I need to shorten them? Any and all ... 
physics
An amusement park ride consists of a car moving in a vertical circle on the end of a rigid boom of negligible mass. The combined weight of the car and riders is 5.0 kN, and the circle’s radius is 10 m. At the top of the circle, what are the (a) magnitude FB and (b) direction... 
another math
At a distance of 34 feet from the base of a flag pole, the angle of elevation to the top of a flag is 48.6°. The flag itself is 5.1 feet tall. The angle of elevation to the bottom of the flag is 44.6°. The pole extends 1 foot above the flag. Find the height of the pole. 
ELA
What should be changed in this sentence? Yes, only six rooms is finished A. change Yes, to Yes B. change is to are C. change finished to finish D. make no change B? What should be changed in this sentence? Construction was started eight years ago in 1792, but the work has gone... 
Algebra
I am helping my daughter with her algebra and we came across a symbol neither of us has seen before. She is solving two sided equations. For this problem, I do see it set up in the book, but it is related to geometry, which they have not covered. She says that they never ... 
HELP!!!!!!!!!!!!!!
Three spheres of radius 10 are placed on a table all touching each other. A fourth sphere of radius 10 is placed so that it lies on top of the other three. The distance from the bottom of the fourth sphere to the table is h, and h^2=a/b, where a and b are coprime positive ... 
MAth
Malcom has 1/2 gallon of soup. He pours the same amount of soup into 8 bowls. which equation represents the fractional part of a gallon of soup, n, in each bowl? Please he;p solve with the letter n. thanks 
Geometry
Lobster fishers in Maine often use spherical buoys to mark their lobster traps. Every year the buoys must be repainted. An average buoy has a 12 inch diameter, and an average fisher has about 500 buoys. A quart of marine paint covers 175 ft squared. How many quarts of paint ... 
Algebra
The diameter of bolts produced by a certain machine distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches.Does your answer make sense based on the given information? Explain why or... 
Physicsis this correct?
A person heats up a can of soup on a stove. If he does 250 joules of work on the soup by stirring it as the burner adds 1675 joules of heat, what is the change in its internal energy? I took 1675j  250 j = 1425j 
Trig
A weight is oscillating on the end of a spring. The position of the weight relative to the point of equilibrium is given by y=1/12(cos8t3sin8t), where y is the displacement (in meters) and t is the time (in seconds). Find the times when the weight is at the point of ... 
Chemistry
Ammonium nitrate, NH4NO3, is used in “cold packs”. Which statement best describes why the products are favored, when the solid is mixed with water? NH4NO3(s) → NH4+ (aq) + NO3 (aq) A) Heat is transferred to the surroundings to lower the temperature and the entropy ... 
abc
Alice, Bob, Candice and David run for school president. There are 201 students in the school and each student can vote for only one candidate. The person with the largest number of votes is the winner. If every student votes, what is the minimum number of votes needed to win ... 
math
A tree, in danger of falling , stands 65 feet from the house. The angle of elevation from the bottom of the house to the top of the tree is 50 degrees. If the tree should fall directly towards the house, will it the house? show all work and explain your answer. tan50/1=x/65 x=... 
fundamentals of math
By holding a ruler 3 feet in front of her eyes as illustrated in the diagram, Carla sees that the top and bottom points of a vertical cliff face line up with marks separated by 3.5" on the ruler. According to the map, Carla is about a half mile from the cliff. What is the ... 
physics
A 0.720 kg snowball is fired from a cliff 8.10 m high. The snowball's initial velocity is 14.2 m/s, directed 30.0° above the horizontal. (a) How much work is done on the snowball by the gravitational force during its flight to the flat ground below the cliff? (b) What is the ... 
related rates
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number). 
Chemistry
True or False: The diameter of most atoms will be between 0.05 nm and 0.3 nm. I think its false (I don't think there even is an average diameter for atoms...), but I can't find any reliable sources to back up my hunch. Help please... 
PHYSICS
What force must be exerted on the master cylinder of a hydraulic lift to support wt of a 2000 kg car resting on the slave cylinder? master : 2cm diameter,slave: 24cm diameter 
Geometry
Write the ratio of the first measurement to the second measurement. Diameter of care tire:40cm Diameter of care tire:18mm I'm not sure hoow to do this. May someone explain how to do this problem. 
Algebra 1
students measured the diameters and circumferences of the tops of a variety of cylinders. Below are the data that they collected. estimate the diameter of a cylinder with circumference 22cm. Cylinder Tops Diameter(cm) 3,3,5,6,8,8,9.5, 10, 10, 12 Circumference(cm) 9.3,9.5, 16, ... 
Math
The distance a bicycle travels with each turn of its wheels is about 3 1/7 times the tire diameter. The tires on Mike's bicycle have a diameter of 24 1/2 inches. How far does it travel with each turn of the wheels? 
Math!
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. (Note the answer is a positive number). 
math
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 12 cm. (Note the answer is a positive number). 
physics
The small piston has a diameter of 2cm and the large piston has a diameter of 6cm. How much more force can the larger piston exert compared with the force applied to the smaller piston? 
calc
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 16 cm. (Note the answer is a positive number). 
CAL
(1 pt) A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number). 
calculus
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number). 
maths
What length of a solid cylinder 2cm in diameter must be taken to recast into hollow cylinder of length 16cm,external diameter 2cm and thickness 2.5mm? 
physics
for the hydrulic lift shown,what must be the radio of the diameter of the vessel at the car to the diameter of the vessel where the force F,is applied so that a 1.52x10^3 gr car can be lifted with a force F,of just 0.125kN? 
Calc
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 13 cm. (Note the answer is a positive number). 
maths
if a hollow sphere of internal and external diameter 4cm melted 8cm respectively melted into a cone of base diameter 8cm . find the height of cone 
english1A  argument/these
Oh shoot. I keep forgetting to change my Word document to a text document. for some reason it doesn't post here if I don't. My introduction... let's see if this works. Gender myths Some people wear earrings, others do not. Some people wear nail polish, while others do not. ... 
Physics
Suppose you are hiking down the Grand Canyon. At the top, the temperature early in the morning is a cool 1°C. By late afternoon, the temperature at the bottom of the canyon has warmed to a sweltering 37°C. (a) What is the difference between the higher and lower temperatures ... 
A.P Chemistry
Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined. Some of the data obtained are given below Percent by weight Molecular Compound of Element Q Weight X 64.8% ? Y 73.0% 104. Z 59.3% 64.0 (a) the vapor... 
chemistry
Sorry this is the last question i have select from the words below the effect of a catalyst on each of the following. (Words can be used more than once or not at all). Words: Increase, decrease, changes, doesn't change activation energy reaction mechanism enthalpy of reaction ... 
Language Arts
The Passage is "The Trouble of Being Earnest" Which statement best expresses a theme of the passage? Some secrets are better left as secrets. Rules change depending on the situation. Marriage changes a person. Nothing is as it seems. I'm stuck between C and D Help? 
physics
Calculate the speed at the edge of a disc of radius 4 cm that rotates at the rate of 8 rev/s. Answer in units of m/s. 
Physics
By how much does the H20 pressure exceed atmospheric pressure at 3 meters below the surface of a pool with fresh H20. I don't know what equation to use. You have to figure the weight of a column of water of some height h, and horizontal area A. Weight= mg= density*volume*g =... 
Statistics
A packaging device is set to fill detergent power packets with a mean weight of 5 Kg. The standard deviation is known to be 0.01 Kg. These are known to drift upwards over a period of time due to machine fault, which is not tolerable. A random sample of 100 packets is taken and... 
phsice
A block of weight W = 17 N, which can slide without friction on a 32.5° incline, is connected to the top of the incline by a massless spring of unstretched length xo = 0.34 m and spring constant k = 225 N/m. By how much will the spring be stretched when the system is in ... 
Math
David refuels his car aﬁer every two days, Mary refuels hers after every four days while Ken refuels his after every eight days. If they all refuel their cars on 3rd March 2013, on which date did they refuel their cars together again? 
Trig........
I need to prove that the following is true. Thanks (cosx / 1sinx ) = ( 1+sinx / cosx ) I recall this question causing all kinds of problems when I was still teaching. it requires a little "trick" L.S. =cosx/(1sinx) multiply top and bottom by 1+sinx, (creating the difference ... 
Math
The average travel time to work for a person living and working in Kokomo, Indiana is 17 minutes. Suppose the standard deviation of travel time to work is 4.5 minutes and the distribution of travel time is approximately normally distributed. What is the travel time to work ... 
Math
The average travel time to work for a person living and working in Kokomo, Indiana is 19 minutes. Suppose the standard deviation of travel time to work is 4.5 minutes and the distribution of travel time is approximately normally distributed. What is the travel time to work ... 
8th grade math
A cylinder has a cone on top. The base of the cone is congruent to the base of the cylinder. The diameter of the base is 16ft. The height of the cylinder is 16ft. and the height of the cone is 9th. What is the volumeof the entire figure? 
physics help please!!!
A venturi tube is measuring the flow of water; it has a main diameter of 4.1 cm tapering down to a throat diameter of 1.8 cm. If the pressure difference is measured to be 67 mmHg, what is the velocity of the water? Please help step by step!!! 
physics
A circular plate of uniform thickness has a diameter of 56cm.A circular portion of diameter 42cm is removed from one edge of the plate .find the position of the center of mass of the remaining portion. 
Math (Calculus)
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. Can someone help & explain how to solve this question? Please. 
Math
1. Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8) 2. Find the missing length. Round to the nearest tenth, if necessary. (7,19) 
Algebra
The diameter of a circular pizza pan is 16 inches. What is the area, to the nearest tenth, of the pan? pi*r2 = area r = diameter/2 201.1 in. squared looks good to me. 
Calc
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. (The answer is a positive number). 
Calc
A spherical snowball is placed in the sun. The snowball melts so that it's surface area decreases at a rate of 2 cm2 /min. Find the rate at which the diameter decreases when the diameter is 8 cm. 
calculus
A spherical snowball is placed in the sun. The snowball melts so that it's surface area decreases at a rate of 2 cm2 /min. Find the rate at which the diameter decreases when the diameter is 8 cm 
Math
jody gets paid $200.00 per week, plus $100.00 for every oil change she completes. write the equation that shoes the relationship between the number of oil changes and her weekly income. then write the slope of the line that represents the relationship 
Math
A group of 378 people are standing in line to ride a roller coaster.If the roller coaster seats 16 people at one time,what is the least number of times the roller coaster will have to operate in order to give every person a ride? 
Physical Science
How much work is needed to raise a 110kg load of bricks 12 m above the ground to being under construction? work in joules= weight*height where weight is mass*9.8m/s^2 
Calculus
The height (in feet) at time t (in seconds) of a small weight oscillating at the end of a spring is given below. h(t) = 0.2 cos(2t) (a) Calculate the weight's average velocity over the time intervals [1, 2] and [5, 7]. 
Math
A bodybuilder loads a bar with 550 Newtons (~125 pounds) of weight and pushes the bar over her head 10 times. Each time she lifts the weight 0.5 meters. How much work did she do? 
Physics
A 10ft,25lb seesaw is balanced by a little girl with a weight of 50lbs and her father with a weight of 200lbs at opposite ends. How far from the seesaw's center of mass must the fulcrum be placed? 
English
Thank you very much for your corrections. Here are some more sentences on the same theme I'm not sure of. 1)The narrator can be a firstperson narrator, who/which (?) uses the firstperson voice . 2)He can be used to bring the reader close to the feelings of the narrator, to ... 
English
correct the following tenese please soemone help me as soon as possible plz plz Concentration does not mean (1) think only one idea. Concentration means holding a central issue in mind while you (2)except or reject ideas that are related to that issue. In the words of F. Scott... 
Hard Calculus
A dose, D, of a drug causes a temperature change, T, in apatient. For C a positive constant, t is given by T=((C/2)(D/3))D^3. (a) What is the rate of change of temperature change with respect to dose. (b) For what dose does the temperature change increase as the dose ... 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on the lower magnet is 5... 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on the lower magnet is 5... 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on the lower magnet is 5... 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on the lower magnet is 5... 
physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on the lower magnet is 5... 
Physics repost clarification
Find the current in the 10.0 ohm resistor in the drawing (V1 = 21.0 V and R1 = 27.0 ohms). I will attempt to explain the diagram again. The drawing shows 2 parallel lines labelled as follows: ABC DEF A and D are connected. C ... 
Finance
Please could you help me solve this Suppose you have $100 in an interest bearing account earning 10% interest. How much would you have after the first year under the following scenarios? . annual compounding (every 12 months) semiannual compounding (every 6 months quarterly ... 
Chemistry
Cynthia combines 1.7 grams of Silver hydroxide with 234 ml of a 1.2 M solution of HBr. Assume all the silver hydroxide dissolves once it is in solution(which is technically not the case, but for this example, just go with the flow of it). What will be the final pH of the ... 
economic
Does a dollar given to a rich person raise the rich person’s total utility more than a dollar given to a poor person raises the poor person’s total utility? 
math
If the outer diameter of a cylindrical oil tank is 54.28 inches and the inner diameter is 48.7 inches,the thickness of the wall of the tank,in inches, is 
Math
A ladder is leaning against a building so that the distance from the ground to the top of the ladder is 4 feet less than the length of the ladder. Find the length of the ladder if the distance from the bottom of the ladder to the building is 8 feet. 
Math (Help)
When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter a 6 inch × 9 inch rectangular cake pan that is 2 inches deep a. Which of these pans has the larger volume? Justify your answer. b. Excluding the ... 
Math
When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter. a 6 inch x9 inch rectangular cake pan that is 2 inches deep. A. which of these pans has the larger value? Justify your answer. B. Excluding the bottom... 
Ms.sue?
When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter. a 6 inch x9 inch rectangular cake pan that is 2 inches deep. A. which of these pans has the larger value? Justify your answer. B. Excluding the bottom... 
A Midsummer Night's Dream, Act 4
"The fourth act opens and ends with Bottom at center stage. What is your opinion of Bottom's character? How might he be the antithesis, or opposite, of Theseus's character?" Does anyone know how to answer the last part of the question? I didn't even realize they could be in ... 
Math
The area of a rectangular photograph is 59 square inches.It is to be mounted on a rectangular card with a boarder of 1 inch at each side and 2 inches at the top and bottom.Express the total area of the photograph and the boarder,A, as a function of the width of the photograph,... 
calculus
A bucket that weighs 4 lb and a rope of negligible weight are used to draw water from a well that is 70 ft deep. The bucket is filled with 44 lb of water and is pulled up at a rate of 2 ft/s, but water leaks out of a hole in the bucket at a rate of 0.2 lb/s. Find the work done... 
Communication/English
Rewrite the sentences focusing on grammar: Inclusive Language—Quoting from Biased Material Back in the 1400s, the laws governing the people were quite specific: “All men shall tithe 10% to the church and pay taxes every six months. All men can attend school until they are ... 
Social Studies
1) The South is an excellent place to grow such crops as cotton, rice, tobacco, and sugar cane. Which of the following is NOT part of the South's excellent farming conditions? a. The warm climate is suitable for agriculture. b. There are no bugs. c. The coastal plains have ... 
physics
A solid copper object hangs at the bottom of a steel wire of negligible mass. The top end of the wire is fixed. When the wire is struck, it emits sound with a fundamental frequency of 300 Hz. The copper object is then submerged in water so that half its volume is below the ... 
calculus
A large container has the shape of a frustum of a cone with top radius 5 m, bottom radius 3m, and height 12m. The container is being filled with water at the constant rate 4.9 m^3/min. At what rate is the level of water rising at the instant the water is 2 deep? the finial ... 
calculus
A box is contructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $5 per square foot and the metal for the sides costs $2 per square foot. Find the dimensions that minimize cost if the box has a volume of 40 cubic feet. 
Physics
Problem Solving. Anne throws a ball horizontally from the top of a building that is 50 m high. He hopes the ball will reach the swimming pool that is at the bottom of a building 12 m horizontally from the edge of the building. If the ball is to reach the pool, with what ... 
physics PLEASE HELP
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on the lower magnet is 5... 
Physics PLEASE HELP
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on the lower magnet is 5... 
Physics
A 5/8 inch (inside) diameter garden hose is used to fill a round swimming pool 7.3m in diameter.How long will it take to fill the pool to a depth of 1.0m if water issues from the hose at a speed of 0.50m/s ? 
Physics
A 55.0kg cheerleader uses an oilfilled hydraulic lift to hold four 130kg football players at a height of 1.20m. If her piston is 19.0cm in diameter, what is the diameter of the football players' piston? 
Scientific notation
a microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus as a diameter of 2 x10`7 meter. ow Large will the diameter of te virus appear when it is viewed under te microscope? 
Physics
An iron ball of diameter 15.23cm rests on a brass ring of internal diameter 15.0cm at a temperature of 20 degrees celsius. To what temperature must both be heated for the ball to pass through the ring? 
Math
When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter a 6 inch × 9 inch rectangular cake pan that is 2 inches deep a. Which of these pans has the larger volume? Justify your answer. b. Excluding the ... 
Chemistry
The reaction b/t H2 and O2 yield water vapor and has a change of heat =484kJ.Ho much PV work is done and what is the value of the change of E in kJ for the reaction of 0.50 mol of H2 with 0.25 mol of O2 amd atmospheric pressure of 1.00 , the volume change is 5.61. 
Math
The number of grams a woman should eat in a day to maintain her weight is proportional to her weight. a woman weighing 102 pounds should eat only 34 grams of fat in a day to maintain her weight, at this rate how many grams of fat should a woman that weighs 180 pounds eat in a ...