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 71

Science
A desert would most likely form on the leeward side of a mountain. would it most likely form at the top or at the bottom of the leeward side? 
science
Wind does not blow upwards. This arrangement would encourage the female cones to pollinate with other trees. Some conifers bear female cones on the top half of the tree and male cones on the bottom half. Why do you think this arrangement of male and female cones on trees is ... 
geometry
Two poles, 60 feet tall and 20 feet tall, stand on opposite sides of a field. The poles are 80 feet apart. Support cables are placed from the top of each pole to the bottom of the opposite pole. How far above the ground is the intersection of the cables. What if the poles were... 
Algebra
A page should have perimeter of 42 inches. The printing area within the page would be determined by top and bottom margins of 1 inch from each side, and the left and right margins of 1.5 inches from each side. What should be the overall dimensions of the page in order to ... 
Algebra
A page should have perimeter of 42 inches. The printing area within the page would be determined by top and bottom margins of 1 inch from each side, and the left and right margins of 1.5 inches from each side. What should be the overall dimensions of the page in order to ... 
physics
In a hydraulic piston set up, one circular piston has a diameter of 2 cm,while the other piston has a diameter of 6cm. Calculate the ratio of the force exerted by the larger piston to the force applied to the smaller piston? 
math
an oak tree grows 500 meters north of the bottom of a rectangular park. The oak tree takes up a space of a circular area with a radius of 2.5 meters .The center of the tree is 24 meters from the left side of the park .The park is 200 meters wide and has a length of 1300 meters... 
trigonometry
A 10 meter ladder is leaning against the side of a building. If the bottom of the ladder is 3 meters from the bottom of the building, find the measure of the acute angle that the ladder makes with the building. 
physics(check my work)
A 60.0 kg person bends his knees and then jumps straight up. After his feet leave the floor, his motion is unaffected by air resistance and his center of mass rises by a maximum of 14.9 cm. Model the floor as completely solid and motionless. a)With what momentum does the ... 
physics
In a hydraulic piston, the small piston has a diameter of 2cm and the large piston has a diameter of 6m. How much more force can the larger piston exert compared with the force applied to the smaller piston? 
Calculus
An inverted conical tank is 3m tall and 1m in diameter at its widest point. The water is being pumped out of a spout 2m above the top of the tank. Recall that the density of water is ρ = 1000kg/m^3 (a) Find the work needed to empty the tank if it is full. Include units. (... 
algebra
find the slope and the yintercept of the line. write fractional answer in the lowest terms. 4y+9x+3=11+9x the slope is? the yintercept is (0,? help im not to good at algebra 
Earth Science
Analogy: melting is to freezing as partial melting is to _______? a. partial freezing b. magma. c. boiling. d. fractional crystallization. 
Physics
19. Two people of unequal mass are initially standing still on the ice with negligible friction. They then simultaneously push each other horizontally. Afterward, which of the following is true? * The center of mass of the two person system moves in the direction of the less ... 
physics
1.A round wooden log of diameter 73cm floats with half of its radius above water. Determine the log’s density 2.An ideal gas doubles its volume in one of three different ways: at constant pressure, at constant temperature, and adiabatically. For each method, give an ... 
Physics
I am second guessing myself A 4 kg block and a 45 kg block are placed sidebyside at the top of a frictionless ramp. Each is given a very light tap to begin their race to the bottom of the hill. In the absence of air resistance a. the 4 kg block wins the race. b. the 45 kg ... 
Precalc
a weight on a vertical spring is given an initial downward velocity of 4cm/sec from a point 6 cm equilibrium. Assuming that the constant w has a value of 4, find the location of the weight 1 sec after it is set in motion. 
Physics
a diver of weight 600N stands at the end of a uniform 4.48m diving board of weight 150 N. The board is attatched to two pdestals 1.55m apart. Find the tension or compression in each of the pedestals. 
Trigonometry
A weight hanging from the end of a spring is pulled 8 inches below its rest position. When released, the weight then exhibits simple harmonic motion, with period 1/2 second. Find an equation describing its motion 
chemistry
Silicon for computer chips is grown in large cylinders called “boules” that are 300 mm in diameter and 2 m in length,as shown.(Figure 1) The density of silicon is 2.33 g/cm3. Silicon wafers for making integrated circuits are sliced from a 2.0 m boule and are typically 0.75... 
Math
if x erasers have a weight of 80 grams, what is the total weight of 50 erasers? 
Math
if x erasers have a weight of 80 grams, what is the total weight of 50 erasers? 
Science
A man has a weight of 120kg what will be the Weight of same man on the moon 
Physics
I have the equation 'change in distance = 1/2 x (vf+vi) x change in time (or delta t)' for uniform acceleration. However, I am totally lost when it comes to rearranging it. I need to rearrange it for inital speed (vi) and change in time (delta t). Can someone please help? 
language arts
sentence corrections Every one of the students I spoke to said they liked their math class. If a person loses their jacket, they can check the lost and found. Each of the boys likes to go out for ice cream after they win a game. My mom gave my sister and I money to spend at ... 
Pre Cal(please show me the work)
At the show a basketball card dealer tells you that a vintage card increases in value by a factor of 10 every 9 years.If the card is now worth $32, how long ago did she buy it?(Hint: Remember that the value is multiplied by 10 every 9 years, not every year.) 2nd Question ... 
Sign Language
Hi I would like for my answers to be checked for these two questions (Note: I'm not sure if the 2nd one is correct): 1. Several schoolrelated words are based on which sign? a. book b. learn c. school d. study My Answer: book 2. How do you change a statement in American Sign ... 
CALCULUS  PLEASE HELP
Water is flowing at a rate of 50 cubic meters per minute into a holding tank shaped like a cone, sitting vertex down. The tank's base diameter is 40 m and a height of 10 m. Write an expression for the rate of change of the water level with respect to time, in terms of h (the ... 
Math Ratios
A cookie dough is divided into three, in the ratio of 1:2:3 by weight. If the heaviest dough is 8oz more than the lightest one, what was the weight of the dough before dividing? 
chemistry
2C2H2(g) + 5O2(g)→4CO2(g) + 2H2O(g) a. Determine the enthalpy change for the reaction. ΔH = (4(393.5)+ 2(241.8)) – (2(227) + 5(0)) The enthalpy change is 2511.6. b. Determine the entropy change for the reaction. ΔS = (4(213.7)+ 2(188.7)) – (2(200.9) + 5(... 
Science
Give two advantages that a telescope lens or mirror of large diameter has over one of small diameter The lightgathering power of an optical telescope is directly related to the diameter (or aperture) of the objective lens or mirror. Note that the area of a circle is ... 
physics
In an experiment to determine the rate at which heat is extracted from a hot material, 305 g of the material at 90 °C is put into a 50 mm diameter copper vessel to a depth of 90 mm as shown below. The hot material and calorimeter are placed in a container holding 189 g of ... 
Algebra Grade 7
A cat likes to play on stairs. Starting at the bottom landing, the cat jumped up 4 steps, then down 2 steps. Then the cat jumped up 5 steps and fell down 3. In two more jumps of 4 steps and then 2 steps, the cat reached the top of the stairs. How many steps are in the staircase? 
physics
a person stands on a bathroom scale in a motionless elevator. when the elevator begins to move, the scale briefly reads only .75 of the persons regular wieght. calculate the acceleration of the elevator, and find the direction of acceleration.(ans 2.5 m/s^2, and down) confused... 
Physics HELP
A 2.0m measuring stick of mass 0.215 kg is resting on a table. A mass of 0.500 kg is attached to the stick at a distance of 72.0 cm from the centre. Both the stick and the table surface are frictionless. The stick rotates with an angular speed of 6.50 rad/s. (a) If the stick ... 
physics
A 1400kg car starts at rest and rolls down a hill from a height of 12m. (a) how much kinetic energy does the car have at the bottom of the hill?(b) how fast is the car going at the bottom of the hill? Can someone explain how to do it! 
physics
Two people carry a heavy electric motor by placing it on a light board 2.00 m long. One person lifts at one end with a force of 400.0 N, and the other lifts at the opposite end with a force of 600.0 N. What is the weight of the motor? and where along the board is the center of... 
MATH
These are my last few question that I need help with PLEASE STAY WITH ME MS. SUE 1. In 2012, the total population of Florida was 3,158,697 people. What was the population in scientific notation, approximately? A. 3.2 * 10^5 B. 3.2 * 10^6 C. 3.2 * 10^7 D. 32 * 10^7 2. If there ... 
I need help.,math
Is this correct or wrong? Technology. Driving down a mountain, Tom finds that he has descended 1800ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. so i would change miles to feet ... 
GEOMETRY INSCRIBED ANGLES MULTIPLE CHOICE QUESTION
segment BC is tangent to circle A at B and to circle D at C. (Not drawn to scale) AB=10 BC=25 and DC=3. Find AD to the nearest tenth. Hint: Draw an auxiliary line from D to segment BA. {There are two circles, the larger one has point A in the center and a dotted line going up ... 
Physics
Two artifacts in a museum display are hung from vertical walls by very light wires. Wire T1 is horizontal from the left wall and goes to a center weight of 177N and wire T2 is at a 53 degree angle with the right wall heading from right to left downwards towards the center ... 
Chemistry
The buoyant force on a balloon is equal to the mass of air it displaces. The gravitational force on the balloon is equal to the sum of the masses of the balloon, the gas it contains, and the balloonist. If the balloon and balloonist together weight 175 kg, what would the ... 
AP Chemistry
The buoyant force on a balloon is equal to the mass of air it displaces. The gravitational force on the balloon is equal to the sum of the masses of the balloon, the gas it contains, and the balloonist. If the balloon and balloonist together weight 175 kg, what would the ... 
Physics
A rectangular coil of 70 turns, dimensions 0.100 m by 0.200 m and total resistance 10.0 ohms, rotates with angular speed 32.0 rad/s about the y axis in a region where a 1.00 T magnetic field is directed along the x axis. The rotation is initiated so that the plane of the coil ... 
Science
Which of the following explains why water is limited resource 1:water is present on earth in a fixed amount that does not change 2:water is degrading slowly with time 3:only water not present in oceans is available for living things to use 4:once it ends up as groundwater ... 
PHYSICS HELP
how would you change both the tension and the lenght and keep the pitch the same? oh. i think this question is a bit too vague. what does the apparatus look like? otherwise it seems like you could do whatever you wanted to the string (e.g., attaching a weight to one end of the... 
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 16 cm. 
Math Algebra
How can I solve this problem? A circle has diameter [AB]. The centre of the circle is (1,3), and B has coordinates (4,1). # Find the coordinates of A. # Find the length of the diameter. HELP ME PLEASE 
maths
a safety pin is supposed to have a 0.675 inches diameter but it was made 0.0007 inches too big what is the diameter of the safety pin? 
English
can someone help me turn this paragraph so it can sound like a personal narrative, A week has passed since the dog left. We haven’t heard good or bad news of him. Every day since he left we would be looking in the nearby parks and around the block. One day I saw a dog that ... 
double negatives
the great white shark doesnt usually attack no person unless it confuses the person for a sea lion or seal 
Human Service
If a person comes into your offices saying he/she have a schedule interview and the employer claims that he/she does not, What would you say to the person 
Health
how does a disabled wheelchair person cook? use the bathroom? take a shower? and stuff a normal person does in thier everyday life 
Physics
I need to know whether the position of the CG is higher, lower, or at the same level within the body when a person is standing up as when a person is lying down? Why or why not? 
Physics
I need to know whether the position of the CG is higher, lower, or at the same level within the body when a person is standing up as when a person is lying down? Why or why not? 
physics
A 34.7 cm diameter coil consists of 20 turns of circular copper wire 1.50 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 9.00E3 T/s. Determine the current in the loop. Determine the rate at which thermal energy is produced. 
Pre Algebra
1.Which of the following numbers is an example of an integer? A 15** B 3/5 C √7 D 0.252525... 2.Which statement is false? A every integer is a real number. B the number zero is a rational number.** C every irrational number is a real number. D every real number is a ... 
physics 2
sorry here is actual question: A 285kg stunt boat is driven on the surface of a lake at a constant speed of 13.5 m/s toward a ramp, which is angled at 28.5° above the horizontal. The coefficient of friction between the boat bottom and the ramp's surface is 0.150, and the ... 
Trig
From a point A, 30 meters from the base of a building B, the angle of elevationto the top of the building C is 56 degrees. The angle of elevation to the top of flagpole D on top of the building is 60 degrees. Find the length of flagpole CD 
college physics
A certain person's eye measures 24.0 mm from the pupil to retina. (a) If we treat the eye's lens as a thin lens, what is its focal length when the person focuses on a pencil 44.3 cm from the eye? (b) While the person focuses on the pencil, what is the image distance for a wall... 
5th grade math
Marcus is building a rectangular box for his kitten to sleep in. He wants the area of the bottom of the box to be 360 square inches and the length of one side to be 1 3/5 the length of the other side. What should the dimensions of the bottom of the bed be? 
math
a woman wants to construct a box whose base length is twice the base width. The material to build the top and bottom is $ 9/m ( squared) and the material to build the sides is $6m/ ( squared). If the woman wants the box to have a volume of 70 m cubed, determine the dimensions ... 
math plz help ;;
Assuming that the cone is completely filled with ice cream, which of the following equations below could be used to calculate the total volume of ice cream in the cone (before you start eating it!)? On top of the cone is 18 as the bottom is 26. A.V=π(9)^2(26)+(4/3)π(... 
Physics
you lift a 10 N physics book up in the air a distance of 1m at a constant velocity of .5m/s. What is the work done by the weight of the book? a) +10 J b)10 J c) +5 J d)5 J 10 N is the force of gravity and to find work you do this: W=F_g(change in distance) (10N)(1m)= +10J so... 
aztecs
what was the clothing of the Aztec god, Quetzacoatl? like you know when every year or so the aztec would choose 1 person to represent a god and they would wear the special clothing the aztecs made for that god 
Physics HELP A,S.A.P!
Q: Tarzan, who weighs 688N, swings from a cliff at the end of a vine that is 18m long. From the top of the cliff to the bottom of the swing, he descends by 3.2m. The vine will break if the force on it exceeds 950N. a)Does the vine break? b) If no, what is the greatest force on... 
Algebra II Help
4) The function f(x)=2(3)^x represents the growth of a dragonfly population every year in a remote swamp. Rose wants to manipulate the formula to an equivalent form that calculates seven times a year, not just once a year. Which function is correct for Rose’s purpose and ... 
language arts
From which point of view are the sentences written from Johnny tremain? It was past dawn when he woke, his feeling of contentment still in him. He was no longer his own problem but Merchant Lyte's. Tomorrow at this time what would be calling him? 'Uncle Johnathan?' 'Cousin ... 
boxing
For class i have to answer this question. What boxing class is heaviest  flyweight, bantam weight or feather weight? I don't know anything about boxing because i am a girl. Thank you for using the Jiskha Homework Help Forum. Here is the site for the boxing weight classes: ... 
math
(Weighing produce). A supermarket has three employees who package and weigh produce. Employee A records the correct weight 98% of the time. Employees B and C record the correct weight 97% and 95% of the time, respectively. Employees A, B, and C handle 40%, 40% and 20% of the ... 
Science
3. Which of the following conditions would likely cause the activation energy to be high? A.atoms are close together B.the temperature is hot C.atoms are not close together * D.a catalyst is present 4. Which of the following materials will burn the fastest in open air? A.a log... 
Physics
A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when the ball is at the ... 
Physics
A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when the ball is at the ... 
Math
2x^2+9x5 is the area of a rectangle and one side of the rectangle is x+5, What is the other side of the rectangle? A volume of a cube is 15625cm cubed. What is the length from point A to B in the cube? Point A is on the front bottom right corner and point B is on the the ... 
physics
Can someone please help me solve this: An 7.74g bullet is fired into a 320g block that is initially at rest at the edge of a frictionless table of height h = 1.07 m The bullet remains in the block, and after the impact the block lands d = 2.07 m from the bottom of the table. A... 
physics
A cylindrical glass is 6cm wide. When you look from above at an angle you see the edge of the bottom of the glass. When the glass is then filled with water (1.33) you see the center of the bottom of the glass. How tall is the glass? 
calculus
Water is flowing freely from the bottom of a conical tank which is 12 feet deep and 6 feet in radius at the top. If the water is flowing at a rate of 2 cubic feet per hour, at what rate is the depth of the water in the tank going down when the depth is 3 feet. 
physics
A 4 kg block and a 45 kg block are placed sidebyside at the top of a frictionless ramp. Each is given a very light tap to begin their race to the bottom of the hill. In the absence of air resistance a. the 4 kg block wins the race. b. the 45 kg block wins the race. c. the ... 
PreCalculus
2000(1 – 0.75) = 2000 (.25) = 500 survivors after the dose of prescription a is taken Then, 500(1.40)3 = 1374 bacteria after the 3 hours period at the instant before the second dose is taken. 1.) For antibiotic A, determine the bacterial population after nine hours (before ... 
physics
you are walking into a circus tent and you notice the circus ringleader twirling a 150 g gold pocket watch from a chain that is 40.0 cm long. the period of rotation is about one second. a) determine the tension in the gold chain when the watch is at the top b) determine the ... 
Physics
A marble and a cube are placed at the top of a ramp. Starting from rest at the same height, the marble rolls without slipping and the cube slides (no kinetic friction) down the ramp. Determine the ratio of the centerofmass speed of the cube to the centerofmass speed of the... 
PHYSICS
tWO PEOPLE PLAY TUG OF WAR. tHE 97 KG PERSON ON THE LIFT PULLS WITH 1,176 n, AND THE 76 KG PERSON ON THE RIGHT PULLS WITH 839 n. aSSUME THAT NEITHER PERSON RELEASES THEIR GRIP ON THE ROPE WITH EITHER HAND AT ANY TIME, ASSUME THAT THE ROPE IS ALWAYS TAUT, AND ASSUME THAT THE ... 
CUC
1.Two masses of 4gm and 6gm respectively are attached to the ends of a light rod of negligible mass and the rod rotates anticlockwise at the rate of 2rev/sec about an axis passing through the center of mass and perpendicular to its length. Calculate (a)the angular momentum of ... 
Physics
A small sphere has a hole drilled in it and it is placed onto a wire. The wire is bent into a circle of radius 15 centimeters. The sphere can slide freely without friction around the circular wire. The circular wire is held vertically. (a) If the circular loop of wire is spun ... 
physics
A person takes a trip, driving with a constant speed of 98.5 km/h except for a 21.0 min rest stop. If the person's average speed is 63.3 km/h, how much time is spent on the trip and how far does the person travel? How much time in hours and how far in km 
science
A person who weighs 600 newtons on Earth would weigh only 100 newtons on the Moon. Which statement best explains why? A.The circumference of Earth is larger than that of the Moon. B.The density of Earth is greater than that of the Moon. C.The mass of Earth is greater than that... 
Algebra
A 512page book has pages 7 inches wide by 9 inches high. The printed area measures 5.375 inches by 7.75 inches. The left margin is 0.3125 inches and the top margin is 0.5625 inches How wide are the margins at the right of each page? How wide are the margins at the bottom of ... 
Composition
For this assignment you are to look at the ways courtship rituals have (or have not) changed over the last generation or two. In order to do this, you will be required to spend some time interviewing a parent, grandparent, or another member of an older generation to discover ... 
Psychology
The facialfeedback hypothesis tells us that? A. smiling makes a person feel better. b. facial expressions are of little importance in communicating. c. we can tell how a person is feeling by his or her facial expression. d. smiling is often a coverup for emotional disorders... 
math 117
I am having an issue solving this appendix.... Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to ... 
Math / Algebra
Can you check my work? Thank you :) 1. The Domain of a function F is the same as the range of F^1 (True or False?) Answer: True. 2. Does the function y = x2 have an inverse? Select the best answer. A. Yes, it passes the horizontal line test. B. No, it does not pass 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 × 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 ... 
Calculus
A 15 ft ladder leans against a wall. The bottom of the ladder is 4 ft from the wall at time t=0 and slides away from the wall at a rate of 3ft/sec. Find the velocity of the top of the ladder at time t=2. The velocity of ladder at time t=2 is ........ft/sec. 
physics
A commuter train passes a passenger platform at a constant speed of 40.0 m/s. The train horn is sounded at its characteristic frequency of 320 Hz. What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding? 
MATH
Someone please help me not sure if I even know what I am doing with any of this. write the following ratios in simplest form 5 3/5 to 2 1/10 5 3/5 2 1/10 x 100/100 = 8/20 = 2/5 the ratio of 7 dimes to 3 quarters 7/3 x 100/100 = 700/300 = 175/75 solve the following applications... 
Calculus Riemann sum definition etc
I am totally stumped... PLEASE if anyone can help we are going nuts...lol Use the Rieman sum definition of the definite integral to show that 3¡ò(there is a little "b" at top and little "a" at bottom 3¡ò x©÷dx = b©øa©ø Here,for simplicity we assume b>a>0. ... 
Calculus 3
The base of an decorative rectangular feature with a volume of V = 225 ft^3 is to be constructed in a restaurant. The bottom is made of marble, the sides are made of glass, and the top is open. If marble costs five times as much (per unit area) as glass, find the dimensions of... 
Math
7 students enter a school talent show. Prizes are awarded for the top 3 places. How many different top=three outcomes are possible? How would I solve this? 
Physics 1
From the top of a cliff overlooking a lake, a person throws two stones. The two stones have identical initial speeds of v0 = 13.4 m/s and are thrown at an angle θ = 31.8°, one below the horizontal and one above the horizontal. What is the distance between the points ... 
Physical science
A trolley of mass of 20kg rolls down an incline from rest. The top of the incline is 10m above the ground. The trolley experiences a constant frictional force of 25N while it rolls down the incline. The velocity attained by the trolley at the bottom of the incline is 12m/s. ...