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?
57,675 results, page 10

math trig
If a ferris wheel with a 20.5 meter radius, how high would one car be from the loding dock at these given angles trveled by the rider?: 90 135 180 225 270 315 405 450 495 and 540? 
maths
The ‘body mass index’ is used to find the body weight that is appropriate for a person’s height. It is calculated using the formula. I = W/H^2 (I = W divided by H squared) Where I is the body mass, W is the person’s weight in kg, and H is the person’s height in ... 
Physics
I'm also stumped by this one: 3. A bimetallic strip (117 cm by 1 cm by 0.01cm) has aluminum (a = 23x10^6 1/Celsius) on one side and has steel (a= 12x10^6 1/Celsius) on the other. It is perfectly straight at room temperature (20 celsius). What change in temperature is ... 
Plane Trigonometry
A compact disk is 12 cm in diameter & rotates at 100 rpm when being played. The hole in the center is 1.5 cm in diameter. Find the speed in cm/min of a point on the disk & the speed of a point on the inner edge. 
Grade 12 Trigonometry
A wheel of a child's car revolves at 15 rpm. a) What is the angular velocity of the wheel in radians per seconds? b) A painted dot on the circumference of the wheel is 12 cm from the center of rotation of the wheel. How far does the dot travel in 5s? 
GEOMETRY HELPPPPP MEEEE PLEASSEEEEE!!!
Find the lengths of the diagonals of this trapezoid. trapezoid on a graph with points (a,0), (b,c), (b,c), (a,0) negative a and b are on the left side (a is on bottom and b is on top) and positive a and b are on the right side (a is on bottom and b is on top) please please ... 
Calculus Ladder Problem
A ladder 20 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect... 
Algebra, Trig
The full question: A point on a wheel has an equation y = 10 sin (x  45°) + 20 that models the height as the wheel rotates. Answer the following questions. 1) What is the height if the wheel has rotated 135°? 2) What are the possible values of rotation (i.e., the value of x... 
Physics
A person jumps straight up. Do they spend more time in air while in the top half or bottom half of the total height? What is the ratio of the two times? 
physics
A 9.94m ladder with a mass of 21.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 226 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.71 rad/s2 ... 
physics
cant find much on how to solve problems like these. any help would be appreciated. A pressure of 6000 Pa is exerted on a wall of 12 square meters area. What force is exerted on the wall? What is the pressure at the bottom of a 50 m tall water tower? What is the pressure at the... 
Physics
A 1mtall barrel is closed on top except for a thin pipe extending 4.8m up from the top. When the barrel is filled with water up to the base of the pipe (1 m deep) the water pressure on the bottom of the barrel is 10 kPa. What is the pressure on the bottom when water is added... 
college physics
how fast does the level of water in a full 2m high, 10cm diameter tank reduces when a 4cm diameter hole is opened at the bottom? 
physics
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.8 and accelerates at the rate of 7.0 , and it is in contact with the pottery wheel (radius 30.0 ) without slipping. Calculate... 
Weight Record
Who is the heaviest person in history and what was his/her peak weight? I have heard that the record is held by a woman named Carol Yager, who weighed 1,800 lbs in her prime. What would a person need to do if they wanted to break this record? 
Physics
James Joule once attempted to measure the increase in temperature of the water in a waterfall resulting from its decrease in gravitational potential energy. How high would the waterfall have to be for the temperature at the bottom to be 1°C higher than at the top? 
Physics
James Joule once attempted to measure the increase in temperature of the water in a waterfall resulting from its decrease in gravitational potential energy. How high would the waterfall have to be for the temperature at the bottom to be 1°C higher than at the top? 
physics
When will your apparent weight be greatest, as measured by a a scale in a moving elevator; when the elevators: (a) accel. downward (b) accel. upward (c) is in free fall (d) moves upward at a constant speed? In what case would you weight be the least? When would it be the same ... 
physics
find the apparent weight of a 18 cm by 12 cm by 6 cm block of concrete with a mass of 1.82 kg that is submerged under water. 
physical
A solid of R.D. 4.2, is found to weigh 0.200kgf in air Find its apparent weight in water 
physics
piston 1 has a diameter of 0.25 in; pistol 2 has a diameter of 1.5 in. In the absence of friction, determine the force necessary to support the 500 lb weight. 
Physics
A person is making homemade ice cream. She exerts a force of magnitude 17 N on the free end of the crank handle, and this end moves in a circular path of radius 0.28 m. The force is always applied parallel to the motion of the handle. If the handle is turned once every 2.0 s, ... 
physics
a roller whose diameter is 20 in weight 72 lbs. what horizontal force is necessary to pull the roller over a brick 2 in high when (a) the force is applied to the center, (b) at the top 
Calculus
The strength of a beam with rectangular corsssection is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical log of diameter d= 3 ft 
Calculus
The strength of a beam with rectangular corsssection is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical log of diameter d= 3 ft 
Physics
A wheel 1 meter in diameter is rotating at 100 revolutions per minute without slipping along a level stretch of road and passes mile marker 0 at 12:00 noon. it continues past mile marker 0 for 10 minutes and then has a period of angular acceleration of 2.5x10^2 radians per ... 
Science
You are holding the axle of a bicycle wheel with radius 30 cm and mass 1.07 kg. You get the wheel spinning at a rate of 79 rpm and then stop it by pressing the tire against the pavement. You notice that it takes 1.11 s for the wheel to come to a complete stop. What is the ... 
physics
A frictionless incline is 5.00 m long (the distance from the top of the incline to the bottom, measured along the incline). The vertical distance from the top of the incline to the bottom is 4.03 m. A small block is released from rest at the top of the incline and slides down ... 
Luke, Math , algebra
Sorry it was a type. For the problem multiply and write answer in simplest form. 4/12 multiplied by 10/4 My answer: FOr what i understood i only got to the flipping step which is 4/12 multiplied by 4/10 now what step do i do. you mulitply to top (4 * 4 = 16) and mulitply the ... 
Physics
A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. On bringing in his arms, the angular speed increases to 7.50 rad/s. By what factor does the moment of inertia change? 
science
I'm having trouble with identifying simple machine. 1)A row boat 2)saw 3)an arm flexing 4)a person hiking 5)a person catching 6)a bikes wheel Help please! 
Calculus
I can do the Ferris Wheel type. This one I can not solve. A light is attached to a 13 inch radius bicycle tire, at a point 8 inches from the center. If Harvey rides the bike at 15 mph, how fast is the light moving up and down at its fastest? 
physics
A wheel of diameter 28.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. A force = (38.0 + 39.0 ) N acts at a point on the edge of the wheel that lies exactly on the x axis at a particular instant. What is the torque about the ... 
physics
A 4000 kg trailer is towed up a hill with a 5% grade. If the towing truck starts from rest at the bottom of the hill and reaches a speed of 12 m/s at the top of the hill, how much is the towing force. The road from the bottom to the top of the hill is straight with a length of... 
Physics
A 4000 kg trailer is towed up a hill with a 5% grade. If the towing truck starts from rest at the bottom of the hill and reaches a speed of 12 m/s at the top of the hill, how much is the towing force. The road from the bottom to the top of the hill is straight with a length of... 
Calculus need help badllyyy!
Use the expressions for left and right sums and the table below. righthand sum = summation (n above and i =1 on the bottom) f(ti) * change in t = f(t1) * change in t + f(t2) * change in t + .... + f (tn) * change in t lefthand sum = summation (n above and i = 0 on the bottom... 
Geometry Solving a Kite Question PLEASE HELP!
Find the variables and lengths of the sides of this kite. {top left is y4, top right is x+5, bottom left is 2x+5, and bottom right is x+12} Thank you (: 
Physics
How much force does it take to stretch a 15mlong, 1.0 cm diameter steel cable by 6.0mm ? I know f/a divided by change in length/l knowns are diameter 1.0cm, change in lngth 6.0mm, length 15 m. Convert all to meters. 
physics
A fish tank has dimensions 36 cm wide by 1.0 m long by 0.60 m high. If the filter should process all the water in the tank once every 4.0 h, what should the flow speed be in the 3.0cmdiameter input tube for the filter? 
Math
Tennis balls withal diameter of 2.5 in. Are sold in cans of three. The can is a cylinder. What is the volume of the space in the can not occupied by tennis balls? Assume the balls touch the on the sides,top and bottom. 
pre calc
Suppose you get on a Ferris Wheel that has a diameter of 40 meters and turns at a rate 1.5 revolutions per minute (the period is not 1.5 ) the height above the ground in meters, of your seat after t minutes can be modeled by an equation. Assume you get on the ride at t=0 min ... 
Math Physics
Two blocks of masses 40.0kg and 20.0kg are stacked on a table with the heavier block on top. The coefficient of static friction is 0.600 between the top and bottom blocks and 0.300 between the bottom block and the table. What is the required magnitude of a horizontal force ... 
Physics
A 51kg person on a merrygoround is traveling in a circle with a radius of 2 m at a speed of 6 m/s A) What acceleration does the person experience? B) What is the net horizontal force? C) How does it compare with the person's weight? 
physics
A wheel is rotating at a rate of 2.2 revolutions every 3.5 s. Through what angle, in radians, does the wheel rotate in 1.0 Angular displacement=angularspeed*time angular speed has to be in radians/sec, and time in seconds. 
Physics
The jet is moving at 500 m/s in a verticle loop, with a minimum radius of 4000 m. Calculate the 69kg pilot's effective weight (the force with which the seat pushes up on him) at the bottom of the circle, and at the top of the circle (assume the same speed). 
Govt college of technology
A fly wheel rotates at 300 rev/min.if the radius is 6cm through what total distance does a point on the rim travel in 30 sec. 
physics
a wheel radius 0.25 m is mounted on a frictionless horizontal axle. the moment of inertia of the wheel about the axis is 0.040. a light cord wrapped around the wheel supports the 0.50 kg of box. the wheel is released from the rest. what is the magnitude of acceleration of the ... 
math ; Geomentry
A Ferris wheel is drawn on a coordinate plane so that the first car is located at the point (40,0). What are the coordinates of the first car after a rotation of 270 degrees counterclockwise about the origin? 
Calculus (urgent help)
consider the function f that is continuous on the interval [5,5] and for which the definite integral 0(bottom of integral sign) to 5(top of integral sign) of f(x)dx=4. Use the properties of the definite integral to evaluate each integral: (a) definite integral from 0(on the ... 
Physics
A person 1.90 m tall walks on a horizontal icy surface. The coefficient of friction between the surface of the ice and the person's shoe sole is μ = 0.33 and the length of the person's legs are 1/2 of the person's height. Determine the maximum step length the person can ... 
physics
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.7 cm and accelerates at the rate of 6.9 rad/s^2, and it is in contact with the pottery wheel (radius 27.0 cm) without ... 
math
john calls his dad every 3 days. Katie calls every 4 days. Jamie calls every 6 days. once in every ________ days, all three will call on the same day. 
Gyroscopes/Physics
Which of the following best describes the motion of a working gyroscope moving through space? a. the gyroscope both translates and rotates b. the gyroscope rotates, abut does not translate c. the gyroscope neither translates nor rotates d. the gyroscopes translates, but does ... 
Trigonometry
The Earth rotates on it's axis once every 24 hours. a)How long does it take Earth to rotate through an angle of 4pi/3? b)How long does it take Earth to rotate through an angle of 210 degrees? 
Math Help
1. Parallelogram PARL~ parallelogram WXYZ. Find the value of c. Parallelogram 1 has P n the bottom left corner, A on the left top, R on the right top, L on the right bottom. Parallelogram 2 has W on the bottom left corner, X on the left top, Y on the right top, Z on the bottom... 
Calcmath
I can do the Ferris Wheel type. This one I can not solve. A light is attached to a 13 inch radius bicycle tire, at a point 8 inches from the center. If Harvey rides the bike at 15 mph, how fast is the light moving up and down at its fastest? 
physics
A large wooden wheel of radius R and the moment of inertia I is mounted on an axle so as to rotate freely. A bullet of mass m and speed v is shot tangential to the wheel and strike its edge, lodging in the wheel’s rim. If the wheel was originally at rest, what is its ... 
Geometry kite solving question
Find the variables and lengths of the sides of this kite. {top left is y4, top right is x+5, bottom left is 2x+5, and bottom right is x+12} Thank you (: 
garyson
A person rides up a lift to a mountaintop, but the persons ears fail to pop –that is, the pressure of the inner ear does not equalize with the outside atmosphere. The radius of each ear drum is 0.40×10ˆ2m. The pressure of the atmosphere drops from 1.010×10ˆ5 Pa at the ... 
Physics
You are holding the axle of a bicycle wheel with radius 35 cm and mass 1 kg. You get the wheel spinning at a rate of 55 rpm and then stop it by pressing the tire against the pavement. You notice that it takes 2.0 s for the wheel to come to a complete stop. What is the angular ... 
PE help pls
Why is it more important to know the amount body fat as opposed to just a person's weight? Weight alone does not determine a person's health. Excess body fat puts one at risk for diseases and illness. Both A and B. None of the above. 
Math
1. A ferris wheel is drawn on a coordinate plane so that the first car is located at the point (30,0). what are the coordinates of the first car after a rotation of 270* about the origin. A) (30,0) B) (30,0) C) (0,30) D) (0,30) This doesn't make any sense, can someone help ... 
Physics
The occupants of a car traveling at a speed of 30 m/s note that on a particular part of a road their apparent weight is 15% higher than their weight when driving on a flat road. a. Is that part of the road a hill or a dip? b. What is the vertical curvature of the road? Please ... 
math
An opening for a movie, every 12th person gets a free ticket, every 15th person gets free popcorn. How many people get both prizes?(please show work) 
PHYSICS HELP!
IMAGINE a building 6400km. high. On the ground floor, a person weighs 175lbs when he steps on a spring scale how much would the man weigh on the same scale if he were standing at the top floor? HINT: Note that 6400km is also the radius of the earth so that the top floor is ... 
Physics
A stone is thrown straight up. At the top of the path, the net force acting on it is (ignore air resistance) a) greater than its weight b) greater than zero, but less than its weight c) instantaneously equal to zero d) equal to its weight At the very top of the path wouldn't a... 
Algebra
The formula to compute a person's body mass index is B=703*w/h2 B represents the body mass index, w is the person's weight in pounds and h represents the person's height in inches. I need to: a. solve the formula for w. b. What is the weight to the nearest pound of a person ... 
English
1. He is the top of the class. 2. He is at the top of the class. 3. He is the bottom of the class. 4. He is at the bottom of the class. (Is each pair interchangable and grammatical? Is #1 or #2 opposite of #3 or #4?) 
Liquid capacity of pitcher
If a ceramic pitcher is 9.5 inches tall and has a diameter that is 3 3/4 at top and 4 inches at the bottom how many ounces will it hold. There use to be a gallon ratio to inches and you could deduct 30 percent for variating diameters. Do you know the conversion? 
Math help quickly
Use the expressions for left and right sums and the table below. righthand sum = summation (n above and i =1 on the bottom) f(ti) * change in t = f(t1) * change in t + f(t2) * change in t + .... + f (tn) * change in t lefthand sum = summation (n above and i = 0 on the bottom... 
Chemistry
A sample of lowfat margarine is heated and separates into two layers. Identify the top and bottom layers and explain why the top layer rises to the top 
math
a bicycle has a diameter of 30m. it rotates 4 revolution per a second. what is the period? 
math
how do you turn fractions into decimals? what do you do with the remainders? example: 3/16what would it be as a decimal? To turn a fraction into a decimal, divide the top number by the bottom number. Instead of a fractional remainder, you need to put a decimal point and ... 
physics
An automobile wheel with a 9.00cm radius and the radius to the rim is 7cm, as shown below, rotates at 2.50 rad/s. How fast does a point 6.50 cm from the center travel? 1 cm/s 
Physics
Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.50. The top block has a mass of 2.6 kg, and the bottom block's mass is 4.0 kg. If a ... 
Physics
Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.50. The top block has a mass of 2.6 kg, and the bottom block's mass is 4.0 kg. If a ... 
math
Dana rode her bicycle 600 miles one summer before she had to replace the tire on her front wheel. The diameter of the front wheel is 24 inches. What is the best estimate of the number of revolutions made by the tire before it had to be replaced? 
physics
A 1500N uniform boom at = 61.0° to the horizontal is supported by a cable at an angle θ = 29.0° to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight w = 2350 N hangs from its top. 
math
find the volume of the cup. the diameter of the top is 3inches. the diameter of the base is 2inches. the height is 4inches. 
Physics
a quarter sits at the bottom of a wishing well where the gauge pressure reads 294 kPa. If the quarter has a diameter of 24mm, what is the total force acting on the top surface of the quarter? Note: Atmospheric pressure = 101.3 
Physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. My ... 
physical science
At the bottom of a well one quarter of radius of the earth deep your weight compare to your normal weight would be 
Geometry
I've been working forever to figure out this problem! If two flagpoles are 10m and 70m tall and are 100m apart, find the height of the point where a line from the top of the first to the bottom of the second intersects a line from the bottom of the first to the top of the ... 
physics
A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus Earth) when the climber is at the top. Find ... 
Physics
n early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the slots at the outside edge of the wheel, travels to a distant mirror, and returns to the wheel just in time to pass through the next slot in the wheel... 
physics
On a roller coaster, a student experiences an apparent weight of 1250 N while accelerating at 2.3 m/s^2 [U]. What is the students mass? 
Basic Math
A student claims that 2/3 = 6/7 because if you add 4 to both the top and the bottom of a fraction, the fraction does not change. How do you respond? I am a bit confused. Don't you need to have a common denominator? 
calculus
consider the function f that is continuous on the interval [5,5] and for which the definite integral 0(bottom of integral sign) to 5(top of integral sign) of f(x)dx=4. Use the properties of the definite integral to evaluate each integral: (a) definite integral from 0(on the ... 
Physics
Assume the Earth is a perfect sphere of radius 6,400 kilometers. Find the weight of a 75.0 kg person at the North pole. Find the weight of this same person at the equator. (You don't need to use Newton's Law of Gravitation but you do need to analyze the radial/centripetal force.) 
physics
weight of a person in newton on mars who weigh 882N on earth ( g = 9.8m/s^2). weight of person on earth who weighs 333N on mars. 
Physics
A 8.49m ladder with a mass of 24.2 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 247 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.75 rad/s2 ... 
Physics
A 9.67m ladder with a mass of 25.0 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 242 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.94 rad/s2 ... 
Physics
A 8.78 m ladder with a mass of 23.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 236 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.90 rad/s2 ... 
mathematics
the london eye in england is the biggest big wheel in the world. It rotates with people on it so that they can get a view of the city of london from high up.there are 32 cabins attached 
physics
4) Suppose the radius of a bicycle wheel is 20 cm. If it rotates at 1 complete rotation per second when you are riding the bicycle, a. What will the tire’s angular velocity be in rad/s? 
physics
A 1300N uniform boom at phi = 64.0° to the horizontal is supported by a cable at an angle θ = 26.0° to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight w = 2250 N hangs from its top. 
Physics
n apple and feather free fall in a evacuated chamber. The apple and feather are released from the top. Suppose the camera opened flash every 1 s. (1)Suppose A1 is the distance from t = 0s to t = 1 s, A2 is the distance from t = 1s to t =2s, A3 is the distance from t = 2s to t... 
Physics
Am I correct? Which statement explains why a bicycle is stable when a rider pedals quickly? (Points : 1) The angular momentum vector resists directional change. < Applying a torque does not change the angular velocity of the wheel. A rotating object acts like a ... 
Physics
Water at a pressure of 3.90 atm at street level flows into an office building at a speed of 0.45 m/s through a pipe 5.60 cm in diameter. The pipes taper down to 2.10 cm in diameter by the top floor, 26.0 m above. Calculate the water pressure in such a pipe on the top floor. 
physics
When a 19.9 kg wheel with an angular speed of 3.10 rad/s is disconnected from a motor, a 0.124 N · m frictional torque slows the wheel to a stop. If the wheel has radius of 0.71 m, how long will it take for the wheel to come to rest after being disconnected from the motor?