# Lance

Newest questions and responses by Lance-
## Physics

A driving bell can withstand a maximum pressure of 2.5 x 10^6 Pa. What maximum depth can the ball reach in seawater?

*asked on May 7, 2018* -
## Physics

What is the gauge pressure at the bottom of a pool 1.9 m deep?

*asked on May 7, 2018* -
## Physics

What is the absolute pressure 1.8 m below the surface of a lake?

*asked on May 7, 2018* -
## Physics

What is the gauge pressure if the absolute pressure is 321 atm?

*asked on May 7, 2018* -
## Physics

What is the absolute pressure if the gauge pressure is 3.2 atm?

*asked on May 7, 2018* -
## Physics

What is the absolute pressure 2.5 m below sea surface?

*asked on May 7, 2018* -
## Physics

What is the gauge pressure if the absolute pressure is 400 kPa?

*asked on May 7, 2018* -
## Physics

A diver can withstand a maximum pressure of 3x10^5 Pa. What maximum depth can he reach in seawater?

*asked on May 7, 2018* -
## Physics

What is the absolute pressure if the gauge pressure is 100 kPa?

*asked on May 7, 2018* -
## Physics

A copper cylinder with a cross-sectional area 0.034 m^2 is placed vertically on a tabletop. What is the weight of the cylinder if it exerts an 800 Pa of pressure on the table top?

*asked on May 2, 2018* -
## Physics

A 500-mL beaker has a mass of 250 g when empty and 645 g when filled with an unknown liquid. What is the density of the liquid?

*asked on May 2, 2018* -
## Physics

What is the mass of a rectangular shaped ice block with dimensions of 0.04m x 0.05m x 0.03m if the density of ice is 917 kg/m3?

*asked on May 2, 2018* -
## Math

If an elliptic race track is 100 yards long and 20 yards wide, then how far apart are the foci?

*asked on April 19, 2018* -
## Physics

What is the focal length of a lens that has a center of curvature of 18 meters from one of the curves of the lens?

*asked on April 11, 2018* -
## Physics

What is the focal length if a lens that has a center of curvature 8 meters from one of the curves on the lens?

*asked on April 10, 2018* -
## Physics

An object is placed at a distance of 60 cm from a converging lens with a focal length of 20cm. What is the magnification of the lens?

*asked on April 10, 2018* -
## Physics (HELP)

An object is placed at a distance of 60 cm from a converging lens with a focal length of 20 cm. What is the magnification of the lens?

*asked on April 10, 2018* -
## Physics (HELP)

An object is placed at a distance of 6 cm from a concave mirror and an image is produced at a distance at a distance of 14 cm from the mirror. What is the focal length?

*asked on April 10, 2018* -
## Physics

A ray of light perpendicular to a medium produces a refracted ray measuring 45º. * True False

*asked on April 9, 2018* -
## Physics (HELP)

The critical angle is the angle at which a ray of light is no longer refracted but completely reflected. True or false?

*asked on April 5, 2018* -
## Physics (HELP)

When light goes from a medium that is less dense to a medium that is more dense, the angle of the refraction is greater than the angle of the incidence

*asked on April 5, 2018* -
## Physics (HELP)

A real image is usually inverted, but can be upright in special cases. True or false?

*asked on April 5, 2018* -
## Physics (HELP)

An object inside of the focal point of a concave mirror produces an image that is...

*asked on April 5, 2018* -
## Physics (HELP)

The angle of reflection of a ray of light striking a plane mirror is ½ the angle of incidence. True or False?

*asked on April 4, 2018* -
## Physics (HELP)

An object is placed at a distance of 25 meters from a concave mirror with a focal length of 20 meters. The image produced is a distance of ___ meters from the mirror.

*asked on April 4, 2018* -
## Physics (HELP)

An object is placed at a distance of 8 meters from a concave mirror with a focal length of 6 meters. The image produced is a distance of ___ meters from the mirror.

*asked on April 4, 2018* -
## Physics (HELP)

Jill pulls on a rope to lift a 12 kg pail out of a well, while the clumsy jack watches. For a 10.0 meter segment of the lift, she lifts the bucket straight up at constant speed. How much power is required to complete this task in 5 seconds?

*asked on March 23, 2018* -
## Calculus- Related rates

A spherical balloon is inflated at the rate of 1 cm^3 per minuter. At the instant when the radius r=1.5, (a.) how fast is the radius increasing? (b.) how fast is the surface area increasing?

*asked on March 1, 2017* -
## Calculus

The length l of a rectangle is decreasing at the rate of 3cm/sec, while its width w is increasing at the rate of 3cm/sec. Find the rates of change of (1.) the area, (2.) the perimeter, (3.) the length of one diagonal at the instant when l=15 and w=6.

*asked on February 26, 2017* -
## Physics

A glacier advances at 7 × 10−6 cm/s. How far will it move in 3.7 y? Answer in units of cm. I have calculated that there are 31,449,600 seconds in a year. I multiplied 31,449,600 by 7 × 10−6 and got 2201.472. Then I multiplied that by 3.7 and got

*asked on October 4, 2016* -
## Chemistry

Sodium + Sulfuric Acid and Phosphoric Acid + Magnesium Hydroxide a.write the formula b. supply the product c.type of reaction d. balancing

*asked on September 12, 2016* -
## Math

Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b? Thank you for helping!

*asked on April 7, 2016* -
## Math

If f(x)=5x-12, find a value for x so that f^-1(x)=f(x+1). Thank you so much

*asked on April 7, 2016* -
## Math

If 1 < x < 9/8, which is bigger, ∛3x or √2x.

*asked on March 21, 2016* -
## Math haha

Simplify: ( 7/2+5/6 )^2 - ( 7/2-5/6 )^2

*asked on March 20, 2016* -
## Math

If 1 > x > 9/8, which is bigger, ∛3x or √2x.

*asked on March 20, 2016* -
## math

Without doing the computation explain why or why not19.7 is a reasonable value for the expression 122.14÷6.2.

*asked on September 2, 2015* -
## MATH

I am trying to find the rule for a function table with input 2, output 30; input 3, output 48; input 4, output 66.

*asked on March 19, 2015* -
## physics

A 78 kg bag of mortar mix is sitting in the back of a truck rounding a traffic circle of radius 27 m at a speed of 21 km/h. Using the truck's frame of reference, find the force of contact between the bag and the side of the truck. Assume that the floor at

*asked on October 11, 2014* -
## Algebra, Logirithms

Find the inverse of the function: f(x) = e^(4x+2) - 10

*asked on May 5, 2014* -
## Math

Help Please! The LCM of two numbers is 60. The GCF of the numbers is 5. One number is 5 more than the other. The numbers are________ and __________ Please help clueless in Massachusetts

*asked on February 25, 2014* -
## math

Brandon and Jacob buy used cars at the same time. Brandon buys a car with 10,000 miles on it. He drives an average of 100 miles a week. The equation that follows can be used to determine how many miles, m, will be on the car after any number of weeks of

*asked on November 13, 2013* -
## Noun and Adjective Clauses

Amanda bought a prom dress which she considered the most beautiful dress ever made. Adjective clause:Amanda bought a prom dress Word(s) modified:dress

*asked on October 22, 2013* -
## physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 .

*asked on September 3, 2013* -
## Statistics

The inside diameter of the automobile wheel bearing sets at a factory is expected to be normally distributed with a mean of 1.30inches and a standard deviation of 0.04 inches. What is the probability that a randomly selected wheel bearing will have an

*asked on July 25, 2013* -
## Physics

Steps for drawing an acceleration time graph from a velocity time graph and vice versa?l Please give me proper steps

*asked on July 10, 2013* -
## math

Triangle GHI is an isosceles triangle. H is the vertex. If the measure of H is 73 degrees what is the measure of G? A.73 B.17 C.34 D.104 A)73 degrees?

*asked on February 26, 2013* -
## Math

Triangle ABC is an isosceles triangle If the measure of B is 37 degrees what is the measure of C? A.37 B.53 C.106 D.143 I think it's A or C?

*asked on February 26, 2013* -
## Science

Why do you think people wrestle alligators?

*asked on February 18, 2013* -
## English

To assert means to A.put into words forcefully b.pass along stories quickly C.compliment someone often D.explain something completely A?

*asked on February 15, 2013* -
## English

An incident is a single A. event B.person C.memory D.discussion A?

*asked on February 15, 2013* -
## Analytic Geometry

A parabola has a directrix y=-3, axis =4 and latus rectum equal to 2. find its equation. Please help me its for my homework

*asked on February 11, 2013* -
## Analytic Geometry

Find the equation of a circle passing through and tangent to the line x-3y+8=0

*asked on January 25, 2013* -
## Analytic Geometry

Give the equation of the circle tangent to both axes of radius 5 and in the 1st quadrant. Can you help me solve this?

*asked on January 21, 2013* -
## Analytic Geometry

What are the equations of the circles tangent to the x-axis, of radius 4 and whose center is at (-2,y) Please help, how do I solve this problem?

*asked on January 21, 2013* -
## Analytic Geometry

A point is equidistant from (-2,4) and (3,5). It is also equidistant from (-2,-3) and (6,-1). Find the point Please I need Help with this

*asked on January 13, 2013* -
## Analytic Geometry

A point is equidistant from (-2,4) and (3,5). It is also equidistant from (-2,-3) and (6,-1). Find the point Please I need Help with this

*asked on January 13, 2013* -
## Geometry

What is the equation of a line through (-2,5) and whose segment intercepted between the axes in the 2nd quadrant is 7sqrt2? Please help me solve this

*asked on January 7, 2013* -
## Math,Geometry

What are the equations of the lines through (-5,-3) and passing at distance 2sqrt5 from (5,7) Please I really need your help. I do not know how to do this problem.

*asked on January 7, 2013* -
## Math,Geometry

What are the equations of the lines through (-5,-3) and passing at distance 2sqrt5 from (5,7) Please I really need your help. I do not know how to do this problem.

*asked on January 7, 2013* -
## geometry

What are the equations of the lines through (-5, -3) and passing at distance 2sqrt5 from (5,7)? This problem is confusing? How do I solve this? Please I need your Help

*asked on January 7, 2013* -
## English

What's the difference between possessive nouns and possessive pronouns? Are they the same

*asked on December 19, 2012* -
## Grading

How do you find out what your grade is on a paper? For example if there is 70 questions and you miss 10 how do you find out what your grade is? Do you subtract 70 and 10 and when you get your answer you divide it by 100?

*asked on December 19, 2012* -
## Math

A highway construction warning sign blinks on and off. In all, the sign is on for 0.88 of each minuite. For how many seconds is the sign on in 5 minutes?

*asked on December 12, 2012* -
## Science

Define heat in science terms

*asked on December 8, 2012* -
## Science

You may have heard "Nothing is Free" explain why this is true

*asked on December 1, 2012* -
## Math perimeter

How many inches of matting are needed to frame an 8in by 11 in print? 38?

*asked on November 8, 2012* -
## math

How many inches of matting are needed to frame an 8 in by 11 in print 38in?

*asked on November 7, 2012* -
## Math

When finding the perimeter you have to add the sides not multiply right? For example a rectangle is 14 width and 29 height would the perimeter be 86in?

*asked on November 7, 2012* -
## physics

You see an optical illusion of an ever-upward spiral staircase. The climber trudges up and up and never gets anywhere, going in circles instead. Suppose the staircase is provided with a narrow ramp, allowing the tired stair-climber to push a wheelbarrow up

*asked on November 4, 2012* -
## Maths

Three boys shared some cards. Peter had twice as many cards as Farid. The ratio of the number of cards Peter had to the number of cards Kiran had was 6:5. Farid gave 2/3 of his cards to Peter and the rest to Kiran. How many cards did Kiran have at first if

*asked on October 24, 2012* -
## Finite Math- help wanted. Super hard!

In a past presidential election, it was estimated that the probability that the Republican candidate would be elected was 2/3, and therefore the probability that the Democratic candidate would be elected was 1/3 (the two Independent candidates were given

*asked on October 16, 2012* -
## math

An airplane flying against the wind travels 100 miles in the same amount of time it would take the same plane to travel 140 miles with the wind. If the wind speed is a constant 40 miles per hour, how fast would the plane travel in still air?

*asked on October 11, 2012* -
## Science

We have to build a catapult that can launch a marshmallow at least 10 feet. Can anyone give me any ideas?

*asked on October 10, 2012* -
## Order of Operations

7/6+(10-4)x5 35?

*asked on September 28, 2012* -
## Order of Operations

As you simplify each expression below, which one requires finding the quotient of 80 divided by 2 A.4+6x8/2 B.2x5x8/2 C.(2+5)x8/2 D.4+(6x8)/2 B?

*asked on September 27, 2012* -
## math

A bag of apples weighs 22.3 ounces and costs $1.80. What is a good estimate of the price per ounce of the bag of apples? A.$1 B.10 cents C.$4 D.40 cents I think its either B or D. I divided

*asked on September 27, 2012* -
## Math

A bag of apples weigh 22.3 ounces and costs $1.80 What is a good estimate of the price per ounce of the bag of apples A.$1 B.10 cents C.$4 D.40 cents D?

*asked on September 26, 2012* -
## Order of Operations

85/5+14x(12-8) 82?

*asked on September 26, 2012* -
## Order of operatios

7-2+3/3x5

*asked on September 26, 2012* -
## Science

Batteries change ____ energy into _____ energy Chemical and electric Converting the suns energy into electricity does not work if it is ____ time or there is ___ weather night and bad? The suns energy can be turned into electrical energy or ___ energy

*asked on September 20, 2012* -
## Math

Ned has 24 caramal candies, 18 mints,and 12 chocolate bars. he wants to divide the candies into groups so that each group has the same number of pieces of each ind of candy. What is the largest number of groups that ned can make A.2 B.4 C.6 D.12 B?

*asked on September 18, 2012* -
## mth

What is the greatest common factors of 9 and 27 A.3 B.6 C.9 D.18 C?

*asked on September 18, 2012* -
## Math

Use estimation to determine which expression has the least value A. 5 3/4 + 2 1/4 - 2 1/8= 8? B. 6 1/4 + 1 - 1 1/4= 6? C.8 1/3 - 1 1/2 + 1 1/3= 7? D? 12 2/5 - 5 +2 4/5= 10? B has least value

*asked on September 18, 2012* -
## Math

what is 1 2/3 times 3

*asked on September 18, 2012* -
## Math

Jared and 5 friends wanted to make mac and cheese for lunch. they decided to use 3 boxes and each box needs 1` 2/3 cups of milk. the milk carton has 4 cups of milk left in it. do they have enough milk to make their lunch? Prove answer I put Yes because if

*asked on September 17, 2012* -
## Math

School is out at 3:50 pm. Band practice is 2 1/2 hrs dinner takes 3/4 of an hour homework takes 1 1/4 hrs. You have to go to bed at 10. About how much time is left to play video games? A. 3 1/2 B.5 hours C.1 hour D. 2 hours D?

*asked on September 17, 2012* -
## Math

Elana bought three bags of dried fruit that weighed 1 7/10 3 1/4 and 2 3/5 about how many fruit did she buy 6 7 10 8 6?

*asked on September 17, 2012* -
## Math

Maria served 4 1/7 loaves of banana bread and 4 2/3 loaves of cranberry bread. About how many slices of bread did she serve A.80 B.72 C.64 D.32

*asked on September 17, 2012* -
## Math

Round each number to the nearest whole number 3/14

*asked on September 17, 2012* -
## science

why barium comnpounds are toxic

*asked on September 16, 2012* -
## Math

2.36 rounded to the tenths place

*asked on September 15, 2012* -
## Definition

What does TRAC stand for

*asked on August 31, 2012* -
## Math

Write a story for the following multiplication problem : 16x5 Derrick gets $5 for every hour he works at the store. He works for 16 hours each day. How much money does he get everyday? Is that a good problem? Write a story for the following multiplication

*asked on August 29, 2012* -
## College Chemistry

A gas containing carbon and hydrogen analyzed as 85.6 % carbon and 14.4 % hydrogen. A 42.1 g sample of a gas occupied a volume of 7490 mL with a pressure of 2280.0 torr at 92 °C. Enter the molecular formula of the compound. Thanks.

*asked on May 5, 2012* -
## College chemistry

Need help balancing chemical equation. Complete and balance the chemical equation. Be sure to include the states of the reactants and products. C3H8(g)+O2(g) →

*asked on May 4, 2012* -
## Chemistry College

A 79.1 g mixture of the compounds calcium chloride and sodium sulfide is 80.9 % by mass sodium sulfide. The compound sodium sulfide is 58.9 % by mass sodium. Calculate the mass (g) of sulfur in the mixture. thanks.

*asked on May 4, 2012* -
## Statistics

A study on the amount of dye needed to get the best color for a certain type of fabric was conducted. The following data give the photometer readings for the color density of the fabric when the amount of dye used was 1% of the weight of the fabric. 13.2

*asked on April 30, 2012* -
## Reposting Chemistry College

Based on the balanced equation 4Na + O2 → 2Na2O calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2 molecules react? Thanks.

*asked on April 16, 2012* -
## College Chem

Based on the balanced equation 4Na + O2 → 2Na2O calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2 molecules react? Thanks.

*asked on April 15, 2012*

## Pages

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