Wednesday

November 25, 2015
Number of results: 592

**math (word problem)**

Suppose a car tire has a diameter of 26 inches. How many rotations will thee tire make if the car travels 1 mile? Round to the nearest tenth. If you get answer please show work of how to get there. Thanks!
*March 29, 2011 by emma*

**Math**

If the diameter of a monster truck tire is 3.5 m and it makes one rotation every 5 seconds, how far does the tire roll in 1 minute? Diameter 3.5 radius: 3.5/2 = 1.75 12(2pi x 1.75) =131.9 m the book states that its 263.89 m? What did I do wrong?
*January 19, 2012 by jake*

**business**

Rocky Mountain Tire Center sells 20,000 go cart tires per year. The ordering cost for each tire is $40, and the holding cost is 20% of the purchase price of the tires per year. The purchase price is $20 per tire if fewer than 500 tires are ordered, $18 per tire if 500 or more-...
*March 30, 2011 by Gin*

**math**

Your company can make x-hundred grade A tires and y-hundred grade B tires a day, where 0≤x≤4 and y= (40-10x)/(5-x). The profit on each grade A tire is twice the profit on each grade B tire. Assuming all tires sell, what are the most profitable numbers of tire to make?
*August 7, 2012 by ibranian*

**College physics**

A 0.30 radius automobile tire accelerates from rest to a constant 2.0 rad/s. what is the centripetal acceleration of the point on the outer edge of the tire after 5.0seconds? i have no clue where to begin on this one can anyone help? do i leave the 2.0 inrad/s or convert to m/...
*October 22, 2007 by i hate physics*

**physics**

A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s^2. If the length of the rope is 2.1 m, what is the girl's tangential speed?
*November 16, 2010 by helmuth*

**Chem**

The total pressure in an 11.1L automobile tire is 40psi at 13 degree celcius. By how much does the pressure in the tire rise if it warms to a temperature of 56 degrees celcius and the volume remains at 11.1L ?
*April 10, 2011 by Maria*

**Math**

If a wheel has a nail stuck in the tire, the tire is 60m in diameter and the wheel drove R -234(1,0) how far did the nail travel?
*January 27, 2013 by Ronald*

**physics**

The gauge pressure in both tires of a bicycle is 720 kPa. If the bicycle and the rider have a combined mass of 87.0 kg, what is the area of contact of each tire with the ground? (Assume that each tire supports half the total weight of the bicycle.)
*January 23, 2013 by Anonymous*

**Physical Science**

A 12 kilogram tire is to be pulled by three ropes. One force, F1, has a magnitude of 50N. Orient the other two forces so that the magnitude of the resulting acceleration of the tire is least. And find that magnitude if: F2=30N, F3= 20N.
*September 18, 2014 by Akila*

**math**

A tire company determines that to manufacture a certain type of tire, it costs $9000 to set up the production process. Each tire that is produced costs $21 in material and labor. The company sells this tire to wholesale distributors for $49 each. (a) Find a linear function C ...
*August 4, 2014 by Marie P.*

**Physics**

A person who weighs 506 N is riding a 94-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 6.70 x 105 Pa, what is the area of contact between each tire and the ground?
*February 8, 2013 by Ashley*

**physics**

A person who weighs 691 N is riding a 89-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 8.40 x 105 Pa, what is the area of contact between each tire and the ground?
*November 18, 2013 by Anonymous*

**physics 1**

A person who weighs 869 N is riding a 98-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 7.80 x 105 Pa, what is the area of contact between each tire and the ground?
*April 22, 2014 by Anonymous*

**physics**

A person who weighs 717 N is riding a 80-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 8.10 x 105 Pa, what is the area of contact between each tire and the ground?
*August 16, 2015 by victor*

**math**

A company has two factories that manufacture tires. Suppose 65% of the tires are manufactured in factory 1 and 35% are manufactured in factory 2. In factory 1, 5% of the tires are defective. In factory 2, 2% of the tires are defective. a) Determine the probability that a ...
*May 23, 2011 by corey*

**Math**

The air pressure in a tire is 800.000kPa.The internal surface area of the tire is 550.000cm^2. Determine the total force applied by the air to the tire. (Round to 3 decimal places). ANS = 44.000kN Force = Pressure x Area = 800.000kPa x 550.000 = 440000.000N = 440.000kN I keep ...
*December 26, 2013 by Danny*

**math**

It takes about735 turns of an average of average 5 th grade byicycle tire to go 1 mile .to the nearest thousand how many times would your tire turn around if you biked besides the runners in a 26-mile marathon?
*March 7, 2011 by cindy*

**physics**

A stone has a mass of 6.01 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.948. When the tire surface is rotating at 14.7 m/s, the stone flies out of the ...
*February 23, 2011 by heather*

**physics**

A stone has a mass of 3.40 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.916. When the tire surface is rotating at 18.8 m/s, the stone flies out of the ...
*April 30, 2012 by Anonymous*

**Physics**

A stone has a mass of 6.00 10-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.73. When the tire surface is rotating at a maximum speed of 17 m/s, the ...
*November 7, 2012 by Don*

**Trig**

if a tire is out of round so that the radius in a certain direction is 1 inch more than in the opposite direction, what is the difference in linear speed between these two points on the tire? Angular speed is 40 radians per second
*September 12, 2007 by Kay*

**Trig/Physics**

A car's wheel (with tire) is 26 inches in diameter and its center is 12 inches above the road. If the car is traveling at 60 feet per second, how fast is the highest point of the tire moving relative to the ground?
*September 23, 2007 by Vash*

**Physics**

A tire cruises up an embankment at 30° for 1 meter before launching across Piranha Lake. What is the velocity of the tire at the top of the embankment in m/s? HELP: Inital KE of the tire is 1/2*M*V2 + 1/2*I*(V/R)2; both rotational and translational Final KE = Initial KE - M*g*...
*October 26, 2009 by Sara*

**Math**

The diameter of a car's tire is 60cm . While the car is being driven , the tire picks up a nail .How high above the ground is the nail after the car has travelled 1km
*December 8, 2011 by Melissa*

**Math**

A street is 282 m long is covered with snow. City workers are using a snowplow to clear the street. A tire on the snowplow has to turn 47 times in traveling the length of the street. What is the diameter of the tire?
*December 21, 2012 by Josh*

**physics**

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give your answer in kPa to ...
*April 10, 2013 by Anjali*

**physics**

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give your answer in kPa to ...
*April 10, 2013 by Anjali*

**physics**

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give your answer in kPa to ...
*April 10, 2013 by Anjali*

**Behavioral Statistics**

I need someone to explain HOW to do this..I don't want just the answer I have got to figure out how to do this before my mid-term, and I'm completely clueless! 3. One of the major U.S. tire makers wishes to review its warranty for their rainmaker tire. The warranty is for 40,...
*February 10, 2014 by Jen*

**5th grade Math**

I need help with the question below. A bicyle tire has a diameter of 24 inches. If a tire rotates for 20 revolutions about how far has the bike rider ridden? Use 3.14 for pi. I know to find the circumference you would do 24 x 3.14 which equal 75.36. I'm not sure what to do ...
*March 19, 2012 by Brandi*

**Physics please check**

A person who weighs 655 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 8.70 X 10^5 Pa, what is the area of contact between each tire and the ground? P=F/A A=F/P A=...
*April 8, 2007 by Mary*

**Grade 11 math - HELP!**

The diameter of a car's tire is 52 cm. While the car is being driven, the tire picks up a nail. How high above the ground will the nail be after the car has travelled 0.1 km? can someone please explain how to solve this question?
*December 12, 2010 by Allison*

**physical**

Part A Each blade on a wind turbine is engineered to produce an effective force through its center of mass that is perpendicular to its long axis. (Part A figure) The magnitude of the force produced by each blade in a wind of speed v is F=(40.0~{\rm kg/s})v. If the center of ...
*April 6, 2011 by gary*

**Math**

The air pressure in a tire is 150.000 kPa. The internal surface area of the tire is 1150.000 cm^2. Determine the total force applied by the air to the tire. (Round to 3 decimal places) Answer = kN 150.000 kPa x 1000 = 150000 Nm 1150.000 cm / 100 cm = 11.5 m Force = Pressure x ...
*December 26, 2013 by Danny*

**chem**

The air in a bicycle tire is bubbled through water and collected at 25 C. If the total volume of gas collected is 5.65 L at a temperature of 25 C and a pressure of 735 torr, how many moles of gas was in the bicycle tire?
*October 13, 2008 by nikki*

**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.
*February 12, 2014 by Candy*

**Chemistry 105**

The air in a bicycle tire is bubbled through water and collected at 25 C. If the total volume of gas collected is 5.65 L at a temperature of 25 C and a pressure of 729 torr, how many moles of gas was in the bicycle tire?
*October 23, 2011 by JULIE*

**algebra**

1. Are the rotations of figures always congruent? Why are or why not? 2. A car tire rotates when you drive. How is this type of rotation different from a rotation in Geometry? What other type of transformation is happening to the car tire? Explain.
*September 6, 2013 by Unknown*

**math**

HELP PLEASE! I don't understand how to do the problem! Please help thanks(: The problem is: your bike tire has a radius of 14 inches. If your tire makes 100 revolutions, how many feet does your bike travel? THANKS! :D
*April 25, 2012 by hannah*

**Math**

When a tire is labeled "185/70/14" that means it is 185 mm wide, the sidewall height (from the rim to the road) is 70% of its width, and the wheel has a diameter of 14 in. What is the tire's sidewall height?
*January 15, 2015 by Anonymous*

**English**

Are these two sentences right? gerund object - I stopped to fix the flat tire. infinitival object - I stopped fixing the flat tire.
*November 23, 2008 by Bethany*

**PhYsIcS - RoTaTiOnAl MoTiOn**

A tire (0.8 m diameter) starts at rest and has an angular acceleration of 5 rad/s^2. If it moves for 10 seconds and then stops abruptly causing a blob of mud at the top of the tire to fly off, how far along the ground will the blob travel until it hits the ground?
*December 7, 2008 by Robert*

**Math**

Betty and Tracy planned a 5000km trip in an automobile with five tires, of which four are in use at any time. They plan to interchange them so that each tire is used the same number of kilometers. What is the number of kilometers each tire will be used? I dont get this ...
*April 26, 2012 by Rezu*

**physics.......please help!!!**

In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks are rubbed together to...
*February 9, 2007 by anonymous*

**physics**

A 1.1 pebble is stuck in a tread of a 0.85 diameter automobile tire, held in place by static friction that can be at most 3.9 . The car starts from rest and gradually accelerates on a straight road.How fast is the car moving when the pebble flies out of the tire tread?
*March 11, 2012 by Anonymous*

**Physics**

In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks are rubbed together to...
*March 29, 2010 by Edward*

**Chemistry**

Each of 2 front tires in the car is filled with a different gas. One tire contains 116 g of helium, another tire has 160 g of unknown gas. How many times heavier is a molecule of the unknown gas than an atom of helium?
*November 10, 2012 by Christina*

**chem**

3. Each of 2 front tires in the car is filled with a different gas. One tire contains 116 g of helium, another tire has 160 g of unknown gas. How many times heavier is a molecule of the unknown gas than an atom of helium?
*April 13, 2013 by Anonymous*

**Chem**

A bicycle tire is filled with air to a pressure of 100 psi at a temperature of 19C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58C. The volume increases by 4%. What is the new pressure of the tire? Convert the temps to Kelvins, then use ...
*September 30, 2006 by Mew*

**math**

The tread life of a particular tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 2000 miles. What is the probability that a randomly selected tire of this brand will last longer than 58,000 miles? A.0.7266...
*September 18, 2010 by Madison*

**physics**

Tires on a car have a diameter of 2 ft and are warranted for 60 000 miles. a) Determine the angle (in radians) through which one of these tires will rotate during the warranty period. b) How m,any revolutions of the tire are equivalent to your answer in, part a)? i have drawn ...
*February 24, 2015 by 7876*

**English**

Are these two sentences right using "I stopped?" gerund object - I stopped to fix the flat tire. infinitival object - I stopped fixing the flat tire.
*November 23, 2008 by Bethany*

**POM**

Acme Tire Service completed 100 tire changes, 6 brake jobs, and 16 alignments in an eight hour day with his standard crew of 6 mechanics. A brake specialist cost $16 per hour, a tire changer costs $8 per hour and an alighnment mechanic cost $14 per hour. The materials cost for...
*January 12, 2011 by Lanks*

**chemistry**

A bicycle tire fitted was fitted with the air pressure of 75 psi at temperature 19 degree C riding the bike on a asphalt on a hot day increases temperature of the tire to 58 degree C. The volume increase by 4% . What is the new pressure
*October 26, 2014 by mathew*

**trig**

A computerized spin balance machine rotates a 35-inch-diameter tire at 400 revolutions per minute. (a) Find the road speed (in miles per hour) at which the tire is being balanced. (Round your answer to two decimal places.) (b) At what rate should the spin balance machine be ...
*January 23, 2014 by Jesse*

**phsical science**

a tire contains air ata pressure of 2.8 bar at 10 degree celsius.if the tires volume is unchanged what will the air pressure in it be when the tire warms up to 35 degree celsius if the car is driven.
*June 20, 2012 by natalie*

**Physics**

A bicycle tire whose volume is 4.1 x 10-4 m3 has a temperature of 296 K and an absolute pressure of 4.69 x 105 Pa. A cyclist brings the pressure up to 6.75 x 105 Pa without changing the temperature or volume. How many moles of air must be pumped into the tire?
*December 1, 2006 by maysam*

**Physical Science**

A tire contains air at a pressure of 2.8 bar at 10 degrees Celsius. If the tires volume is unchanged, what will the air pressure in it be when the tire warms up to 35 degrees Celsius as the car is driven?
*September 18, 2011 by Jason (please help)*

**Physics**

A tire contains air at a pressure of 2 bar at 15 degrees Celsius. If the tires volume is unchanged, what will the air pressure in it be when the tire warms up to 40 degrees Celsius as the car is driven?
*November 2, 2011 by Diana*

**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?
*March 31, 2014 by Tanya*

**physics**

An automobile tire has a pressure of 325 kPa when the temperature is 10 degrees Celsius. If the temperature of the tire rises to 50 degrees Celsius and its volume is constant,what is the new pressure?
*February 16, 2014 by victoria*

**Chemistry**

How many moles of gas must be forced into a 4.8L tire to give it a gauge pressure of 30.8psi at 30 degrees celsius? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5L so that the total pressure in the tire is 45.3psi. What formula...
*February 20, 2013 by Claire*

**algebra**

An advertisement for a steel-belted radial tire states that this tire delivers 14% better gas mileage. If the present gas mileage is 25.5 mpg, what mileage would you expect if you purchased these tires? Round your answer to the nearest tenth of a mile per gallon. I know the ...
*May 7, 2015 by Mary*

**Physics**

Hey can someone help, im having trouble converting alot. IP The weight of your 1440 kg car is supported equally by its four tires, each inflated to a gauge pressure of 30.0 lb/in^2. What is the area of contact each tire makes with the road? What gauge pressure is required to ...
*December 3, 2009 by Elizabeth*

**chemistry **

Before a trip from New York to Boston, the pressure in an automobile tire is 2.5 atm at 272 K. At the end of the trip, the pressure gauge reads 1.94 atm. What is the new Celsius temperature of the air inside the tire? (Assume tires with constant volume.) Answer in units of ...
*March 8, 2012 by please help *

**mathematics**

The members of a high school basketball team are driving from calgary to vancouver,which is a distance of 675km.Each tire of their van has a radius of 32cm.If the team members drive at constant speed and cover the distance in 6h 45 min,what is the angular velocity,in radians/...
*November 12, 2013 by rahul*

**physics **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
*November 3, 2014 by Anonymous*

**physics **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its ...
*November 4, 2014 by help please*

**physics**

In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks are rubbed together to...
*February 8, 2007 by anonymous*

**rolling motion **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
*November 3, 2014 by Anonymous*

**Geometry**

A car tire rotates when you drive. How is this type of rotation different from a rotation in Geometry? What other type of transformation is happening to the car tire? Thanks!
*March 11, 2014 by Ismary*

**Gas laws and pressure **

An automobile tire has a pressure of 325 kPa when the temperature is 10 degrees Celsius. If the temperature of the tire rises to 50 degrees Celsius and its volume is constant, what is the new pressure?
*October 3, 2012 by Britani *

**physics **

The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
*November 3, 2014 by help*

**Trig**

a child puts beads on one spoke of a bicycle wheel. the tire has a diameter of 2ft. if the child rides so that the tire makes one full rotation every 15 sec, and the beads begin in the horizontal outward position, find an equation that models the position of the beads at time t.
*October 7, 2013 by Bailey*

**physics**

You are riding your bike and the tire has a radius of 0.33 m and mass 1.5 kg rotating at 98.7 rad/s. You just notice you are just seconds to riding off a cliff what torque will you need to stop the tire in 2.0 s before you find yourself at the bottom of a 1000 m cliff. New ...
*April 5, 2015 by Anonymous*

**accounting**

What does it mean to evaluate the financial health of Goodyear Tire and Rubber Company? I have to do an outline of the financial health of Goodyear Tire and Rubber Company; and I do not understand what any of this means. Can somebody please explain this to me?
*August 25, 2009 by Angel of 8*

**Language Arts**

Need help figuring out which is the correct way to write the sentence. 1. In the summer we were going to the beach, and had a flat tire. 2. In the summer, when we were going to the beach, we had a flat tire. Thanks....
*March 19, 2013 by Brandi*

**algebra**

Company makes tire rims. Estimates the the profit, P, of selling x tire rims is given by: P= -0.01x^2 + 8x + 1500 Plugging in 1000 for P and solving, I get 400. Is that correct? b) find the number of rims that must be sold to maximize profit. plugging in 400 for x, I get $3100...
*October 11, 2011 by Nabil*

**Physics**

Hi I tried asking this question yesterday but still had some confusion.Since the area must be in cm^2. IP The weight of your 1440 kg car is supported equally by its four tires, each inflated to a gauge pressure of 30.0 lb/in^2 . What is the area of contact each tire makes with...
*December 4, 2009 by Elizabeth*

**physics**

You inflate your car tires to a gauge pressure of 2.43 atmospheres at a temperature of 24 degrees C. After driving a couple of miles the temperature of the tire increases by 46 degrees C. What is the new gauge pressure to the nearest hundredth of an atmosphere? What fraction ...
*October 21, 2010 by sandhu*

**Physics**

A stone has a mass of 3.0 10-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.86. When the tire surface is rotating at 10 m/s, the stone flies out of the ...
*October 7, 2007 by Student*

**physics**

a) calculate the acceleration of a 0.55-m-diameter car tire while the car is traveling at a constant speed of 25m/sec. b) compare this with acceleration experienced by a jet car tire of diameter 1.0m when setting a land speed record of 310m/sec
*September 26, 2011 by lucy *

**Math**

There 18 swings 3/9 are tire swings. How many are tire?
*December 18, 2012 by Anonymous*

**Math**

Would someone like to help me with these questions? Steps appreciated~ 1. If the diameter of a monster truck tire is 3.5 m and it makes one rotation every 5 seconds, how far does the tire roll in 1 minute? -------------------------------------- 2. At t=0 a car is due 2 km ...
*January 19, 2012 by Melinda*

**math**

The tread depth of the tires on your family's new car is 3/8 inch. you predict that, as a result of driving the car, the change in tire tread depth will be about -3/64 inch per year. A. write a variable expression for the tire tread depth after y years of driving. Use your ...
*January 7, 2009 by matt*

**physics help!**

A tire is filled with air at 17 degreees C to a gauge pressure of 220 kPa. If the tire reaches a temperature of 39 degrees C, what fraction of the original air must be removed if the original pressure of 220 kPa is to be maintained? Please help step by step!
*May 2, 2010 by Anonymous*

**statistics **

According to internal testing done by the Get-A-Grip tire company, the mean lifetime of tires sold on new cars is 23,000 miles, with a standard deviation of 2500 miles. a) If the claim by Get-A-Grip is true, what is the mean of the sampling distribution of for samples of size...
*March 26, 2012 by tea*

**Physics**

I have to compare and contrast three types of tires, and relate them to physics. I've chosen: <li> Racing tires <li> Winter tires <li> All season tires I've chosen to compare them on: <li> Tire tread pattern <li> Rubber compound <li> ??? As ...
*March 1, 2008 by Lucy*

**calculus**

the demand for a certain type of auto tire is given by x=f(p) 50(1+e^-p/60). a)if the weekly quantity demanded is 60000 tires find the price? b)if the current price is $120 per tire and is increasing at a rate of $2 per week, what is the rate of change of the demand per week? ...
*April 20, 2013 by anonymous*

**Chemistry**

How many moles of gas must be forced into a 5.2 L tire to give it a gauge pressure of 30.6 psi at 26 ∘C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.9 psi so that the total pressure in the tire is 45.5 psi .
*July 14, 2015 by Cici*

**Chemistry**

How many moles of gas must be forced into a 4.4 L tire to give it a gauge pressure of 32.4 psi at 30 ∘C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5 psi so that the total pressure in the tire is 46.9 psi .
*November 12, 2015 by Staci*

**Physics Quick!**

A tire 0.650 m in radius rotates at a constant rate of 240 rev/min. Find the speed of a small stone lodged in the tread of the tire (on its outer edge). (Hint: In one revolution, the stone travels a distance equal to the circumference of its path, 2¥ğr.) What is the ...
*August 19, 2012 by kk2*

**Statistics**

Suppose a tire manufacturer wants to set a mileage guarantee on its new XB 70 tire. Life tests revealed that the mean mileage is 47,900 miles and the standard deviation is 2,050. The manufacturer wants to set the guaranteed mileage so that no more than five percent of the ...
*November 24, 2011 by Brea*

**Algebra 1**

Your uncle buys a new car that comes with seven new tires, one for each wheel, and three spares. He decides to be economical by using the three spares as much as the other four. If he drives 22, 750 miles and each tire has been used equally, what will be the wear in miles on ...
*May 7, 2008 by Libby*

**math**

An advertisement for a steel-belted radial tire states that this tire delivers 16% better gas mileage. If the present gas mileage is 24.5 mpg, what mileage would you expect if you purchased these tires? Round your answer to the nearest tenth of a mile per gallon. 26.5/X = 12/...
*September 27, 2015 by Valerie*

**math**

The distance from Philadelphia to Sea Isle is 100 mi. A car was driven this distance using tires with a radius of 14 in. How many revolutions of each tire occurred on the trip? (Hint: one revolution is equivalent to one circumference distance traveled. Thus, need to find how ...
*July 22, 2009 by sharon*

**physics**

I need help with solving these word problems. Marion rides her racing bicycle @ speed of 8 m/s. Bicycle wheels have a radius of 34 cm. What is the angular speed of wheels? How many times does each wheel go around during a 10-min race? A car tire has radius of 33cm. Tire turns ...
*December 1, 2008 by physics*

**Physics**

I need help with solving these word problems. Marion rides her racing bicycle @ speed of 8 m/s. Bicycle wheels have a radius of 34 cm. What is the angular speed of wheels? How many times does each wheel go around during a 10-min race? A car tire has radius of 33cm. Tire turns...
*December 1, 2008 by physics*

**Geometry check my answer? **

The diameter of a car tire is approximately 0.6meters. The warranty is good for 70,000 km. About how many revolutions will the tire make before the warranty is up? More than a million? a billion? ----------------------- my work c=pi*d c=3.14*0.6 c=1.884 meters 1km=1000 meters ...
*January 23, 2011 by Skye*