# Drew

Popular questions and responses by Drew-
## Physics

A frog in a hemispherical bowl, as shown below, just floats in a fluid with a density of 1.26*10e3 kg/m3. If the bowl has a radius of 6.16 cm and negligible mass, what is the mass of the frog?

*asked on June 28, 2011* -
## Math

37% of college students say they use credit cards because of the rewards program. You randomly select 10 college kids and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use

*asked on November 25, 2012* -
## Chemistry

a. Calculate the expected freezing-point depression of a 0.200 m KNO3 solution. b. Will the value you calculated match the actual freezing-point depression for this solution? Why or why not? a). -0.372 degrees Celsius b). Possibly because not all of the

*asked on February 3, 2016* -
## Math (Probability)

Each of two urns contains green balls and red balls. Urn I contains 8 green balls and 12 red balls. Urn II contains 5 green balls and 8 red balls. If a ball is drawn from each urn, what is P(red and red)? A. 79/65 B. 24/65 C. 20/33* D. 2/13 You have six $1

*asked on April 29, 2016* -
## Physics Fluids

When a block of volume 1.00 × 10–3 m3 is hung from a spring scale, the scale reads 10.0 N. When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged. The density of water is 1.00 × 103 kg/m^3. Determine the

*asked on April 6, 2015* -
## Physics HELP

You have a converging (convex) lens and a diverging (concave) lens and the magnitude of the focal length of each lens is 38.5 cm. (a) Determine which lens you should use in order to produce an image of a light bulb on a screen several metres away. (b)

*asked on December 4, 2017* -
## Physics Fluids

A column of oil of height 70.0 cm supports a column of an unknown liquid. Assume that both liquids are at rest and that the density of the oil is 840 kg/m^3. Determine the density of the unknown liquid.

*asked on April 6, 2015* -
## NH4NO3 explosive?

How is NH4NO3 explosive? Please explain with chemical equation. Thank you so much!

*asked on October 6, 2014* -
## Algebra

Jennifer has a recipe that calls for horseradish sauce that is 45% pure horseradish. At the grocery store she finds one horseradish sauce that is 30% pure horseradish and another that is 80% pure horseradish. How many teaspoons of each of these horseradish

*asked on March 3, 2013* -
## math

HELP ME!!! One of your friends missed the class on scientific notation. Describe how you would explain to your friend what it means for a number to be in scientific notation and how to convert a number from standard form to scientific notation.

*asked on January 10, 2011* -
## Chemistry

2. Identify the oxidation numbers for each element in the following equations. Then determine whether each equation describes a redox reaction. Justify your answer in terms of electron transfer. Describe the oxidation and reduction that occurs. a. Ca +

*asked on April 10, 2020* -
## Physics

Suppose a soccer player kicks the ball from a distance 30 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be above the horizontal.

*asked on January 31, 2016* -
## chemistry

how many electrons does Fe3+ gain or lose when the ion forms? A. gains 1 electron B. loses 1 electron C. gain 3 electrons D. loses 3 electrons I think D.

*asked on November 20, 2012* -
## Calculus

Find the x-coordinates of all points on the graph of y = x^3 - 4x^2 + 5x at which the tangent line is parallel to 2y - 10x - 7 = 0

*asked on November 16, 2010* -
## chemistry

why can I not use the formula m1v1=m2v2 for the following question: What volume of 1.20 M NaOH will be needed to neutralize 225 mL of 3.0 M sulfuric acid? I get 0.56 L but the answer should be 1.1 L. When am I able to use that formula and when can I not?

*asked on October 18, 2009* -
## Chemistry

BrO-3 + 5Br- + 6H+ ---> 3Br2 + 3H2O the value of - delta[BrO3]/delta T= 1.5x10^-2M/s at a particular time what is the value of -delta [Br-]/Delta t at the same instant? 13 M/s 7.5x10^-2 1.5x10^-2 3.0x10^-2 330 M/s

*asked on February 25, 2008* -
## Chemistry

Propane gas is stored in a tank at a pressure of 15.0 atm at 22.0 °C. The tank can hold a pressure of 42.0 atm before bursting. During a fire the gas is heated to 600.0 °C. What is the gas pressure, and will the tank contain the gas without bursting? I

*asked on April 9, 2016* -
## Physics Fluids

Water is flowing through a rectangular channel that is 12 m wide with a speed of 0.75 m/s. The water then flows into four identical rectangular channels that have a width of 3.0 m. The depth of the water does not change as it flows into the four channels.

*asked on April 6, 2015* -
## Algebra 1 Check

This is the last question on my homework and I wanted to know if I got it right. Thanks! Which of the following inequalities is true for all real numbers of x? a.) x^2≤x^3 b.) 2x^3≤4x^2 c.) 4x^2≤(4x)^2 d.) 4(x-3)^2≥4x^2-3 My answer: C.

*asked on October 3, 2014* -
## Physics

A 2.5-kg block is sliding along a rough horizontal surface and collides with a horizontal spring whose spring constant is 320 N/m. Unstretched, the spring is 20.0 cm long. The block causes the spring to compress to a length of 12.5 cm as the block

*asked on May 30, 2014* -
## math

how to do pre algebra pizzazz page e 28

*asked on April 15, 2013* -
## Physics

A sprinter starts from rest and reaches his top speed in 4 seconds running with a constant acceleration. He then maintains that top speed and finishes the 100 m in the overall time of 10 seconds. What is his acceleration?

*asked on February 9, 2010* -
## math

A farmer's land is separated into sections of size 215 acres. Suppose there are 449 such sections. How many acres of land does the farmer own? Write your answer as a mixed number in simplest form.

*asked on June 18, 2018* -
## Language Arts

4. In which sentence does the prepositional phrase act as an adverb? A. Last Evening, Anne suffered from a headache. B. The door to the attic was left open. C. Mr. Frank discussed the problem of noise in the annex. D. He bought a drink for Mr. Dussel. ***

*asked on March 29, 2016* -
## Science

Which type of energy in the bungee chord prevents the bungee jumper from hitting the ground after a jump? A. kinetic energy B. elastic potential energy *** C. magnetic potential energy D. thermal energy -- Side note: Please help. I am not asking for the

*asked on March 28, 2016* -
## Chemistry

Explain how the presence of several oxygen atoms in a compound containing an -OH group can make the compound acidic. I don't understand this because according to Arrhenius, bases have OH. And it doesn't apply to either Lewis's acid-base theories, or the

*asked on February 11, 2016* -
## Math

AN ATHLETIC FIELD HAS THE SHAPE OF A 40 YARD BY 100 YARD RECTANGLE WITH A SEMICIRCLE AT EACH END. A RUNNING TRACK THAT IS 10 YARDS WIDE SURROUNDS THE FIELD. FIND THE AREA OF THE ATHLETIC FIELD WITH THE TRACK INCLUDED.

*asked on May 18, 2015* -
## Chemistry

A 50mL solution of Histidine-HCl (Histidine: pKa1=1.8, pKa2=9.2, pKa3=6.0)is titrated with 0.500M NaOH. What is the expected pH of the histidine solution at the points in the titration when 14.0mL, 26mL, and 38mL of the NaOH titrant is added?

*asked on October 2, 2013* -
## Math

A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?

*asked on May 9, 2013* -
## algebra

Find S25 for (-7) + (-2) + 3 + 8 +... A. 1,320 B. 1,325 C. 825 D. 820 I think A

*asked on March 5, 2013* -
## algebra

Determine if the inverse of function {(-3, -6), (-1, 2), (1, 2), (3, 6)} is also a function. A. function B. not a function B

*asked on February 4, 2013* -
## algebra

Find f(x)·g(x) if f(x) = 3x and g(x) = x + 1. A. 3x2 + 3x B. 3x + 1 C. 4x + 1 D. 3x2 + 1 A

*asked on February 3, 2013* -
## algebra

If f(x) = 2x and g(x) = ½ , calculate f(x) • g(x) A. x B. x2 C. 2x D. 2x2 I say B

*asked on February 3, 2013* -
## chemistry

a compound is found to be 94.1% o and 5.90% h. its molecular mass is 34.0. what is its molecular formula A. H3O2 B. OH C. H2O D. H2O2 I think D

*asked on November 23, 2012* -
## chemistry

the fluoride anion always carries a charge of 1- true or false I say true

*asked on November 20, 2012* -
## chemistry

How many moles of magnesium is 1.25 x 1023 atoms of magnesium? A. 0.208 × 101 mol Mg B. 2.08 × 101 mol Mg C. 2.08 × 10 -1 mol Mg D. 20.8 mol Mg I think it would be D

*asked on November 10, 2012* -
## chemistry

The water molecule (H2O) is composed of 2 atoms of hydrogen and one atom of oxygen. What is the mass of one mole of water? A. 3 g B. 18 g C. 6 g D. 6.02 x 1023 g B. 18 g

*asked on November 10, 2012* -
## Math

Fiind the area bounded by the parabola y^2 = 8x, the x axis and the line x=2

*asked on August 21, 2012* -
## calculus

Can someone please show steps as I am having a hard time understanding. The position (in meters) of a particle is modeled by y=x^3-12.5x^2+51x-67.5, where xis in seconds. Find the max, min and point(s) of inflection.

*asked on April 23, 2012* -
## physics

FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest___m smallest___m

*asked on April 16, 2012* -
## chemistry

A solution was made by dissolving 10.0g of a nonvolatile nonelectrolyte compound in 100.0g of water froze at -0.93C. What is the approximate molecular weight of the substance. (for water..kf=1.86C/m) (m is molality)

*asked on December 12, 2011* -
## physics grade 11

A 4.3 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.8 m/s2 . If the upward acceleration of the bucket is 4.6 m/s2, find the force exerted by the rope on the bucket. Answer in units of N. I'm almost sure the answer

*asked on October 17, 2010* -
## physics grade 11

A 4.3 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.8 m/s2 . If the upward acceleration of the bucket is 4.6 m/s2, find the force exerted by the rope on the bucket. Answer in units of N. I'm almost sure the answer

*asked on October 17, 2010* -
## Chemistry

It is difficult to type these but I'll do my best. This is the first question and I just don't get it. My professor is out of the country so any help would be appreciated. Give the IUPAC name for each of the following alkanes: CH3 I a.

*asked on July 20, 2010* -
## Chemistry

This is the first in a series of hw pages. If anyone would be able to help me with this one I think I would be able to complete the other 20 hw questions I have. Thanks to anyone that helps. For each definition, find a corresponding term from the following

*asked on July 20, 2010* -
## BIO. LIFE SCIENCE

THE OFFSPRING OF A CROSS BETWEEN A PLANT WITH PURPLE FLOWERS AND A PLANT WITH WHITE FLOWERS ARE 23 PLANTS WITH PURPLE AND 26 WITH WHITE FLOWERS. USE THE LETTER P FOR PURPLE AND p FOR WHITE. WHAT R THE GENOTYPES OF THE PARENT PLANTS.

*asked on May 12, 2010* -
## Trig

Let O represent the origin and P be the point (9, -4). Find the positive angle (counterclock wise direction)that the line segment OP makes with the positive x-axis. the answer is 5.86 radians but i keep getting 0.418 radian. please help and show work

*asked on January 24, 2010* -
## Spanish

Completa cada oración con la forma correcta de SER o ESTAR. 1.Después del semestre, los estudiantes __________ muy cansados. 2.Mis compañeros y yo __________ trabajando en el mismo proyecto. 3.Esas __________ ideas muy buenas. Las voy a usar para la

*asked on November 4, 2019* -
## Chemistry

Given the same reaction as before: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 Great! 3.21 moles of O2 were produced. Now, How many molecules of O2 does this number of moles represent?

*asked on February 8, 2018* -
## Chemistry

Now if your lab partner determined that there were 3.824 x 1023 atoms of H in an unknown sample of C2H4Cl2, how many milligrams would the unknown sample weigh?

*asked on February 8, 2018* -
## Chemistry

Now if your lab partner determined that there were 1.157 x 1020 atoms of Mn in an unknown sample of KMnO4, how many milligrams would the unknown sample weigh?

*asked on February 8, 2018* -
## Math

Mark's age, x, is 6 times his age 2 years ago. Which equation represents the statement?

*asked on September 6, 2017* -
## science

Which statement most accurately compares Earth’s crust and Earth’s mantle?

*asked on May 9, 2017* -
## Social Studies

Following World War 1, which industry experienced tremendous growth in the 1920s?

*asked on April 5, 2017* -
## Algebra

I need help with these Algebra problems in which I need to give the square and the cube of each expression in simplified form. 1. -2t^2k 2. 3rs^4 3. 5m^3n 4. -4x^2y^2

*asked on March 28, 2017* -
## Religion

Hi Miss Sue. I'm still a little confused. How can I start off my paragraphs on how I see the Holy Spirit working through those 5?

*asked on December 30, 2016* -
## Religion

Hi Ms. Sue. My teacher only wants a small explanation of those 5.

*asked on December 30, 2016* -
## Religion

Hi.I need help with this question: Do you know how the Holy Spirit works through: 1.Feeding the hungry 2.Clothing the naked 3.Welcoming the Stranger 4.Bringing comfort of Christmas to the sick 5.Bringingredients Catholic Healthcare services Can I have

*asked on December 30, 2016* -
## Math(solid mensuration)

The lateral edges of edge 8m of an oblique square prism is inclined at an angle of 30 degrees with the altitude. What is the altitude of the prism?...

*asked on April 30, 2016* -
## Chem

If a reaction has a change of H of -120.0 kcals/mole and is spontaneous for all temperatures less than 200.0K, what is its ΔS?

*asked on April 30, 2016* -
## math

what is greatest common factor for 3 and 4?

*asked on March 18, 2016* -
## Physics

A person wants to launch a water balloon and hit the top of a tower, 50.0 meters away. The water balloon launcher is angled at 25 degrees. The water balloon leaves the launcher at 68 m/s. If the balloon hits the top of the tower, how high was the tower?

*asked on January 26, 2016* -
## Physics

a crane holds a 500kg wrecking ball in place using a wire with tension T1 and is horizontal to the ground. The crane swings it with a cable under tension T2. if the wire holds the ball in place so the cable forms a 20 degree angle with the vertical,

*asked on November 15, 2015* -
## math

Theater Total Value of Ticket Sales A $1,600 B $2,000 C $1,800 D $4,800 E $3,200 The table above shows the total value of the ticket sales for an afternoon show in each of five movie theaters. There were 300 tickets that were sold for each theater. The

*asked on November 13, 2015* -
## Pre-Algebra, please help!

which of these non terminating decimals can be converted into a rational number? a. 0626226222... b. 0.0020220222... c. 0.123123123...*** d. 0.898998999... Am I correct? Thank you!

*asked on October 30, 2015* -
## Pre-Algebra

At a halftime show a marching band marched in formation. The lead drummer started at a point with coordinates (-2,-5) and moved three steps up and 1 step right. Write a rule to describe the translation. What were the coordinates of the drummers final

*asked on September 28, 2015* -
## Chemistry

How much heat is needed to convert 10g ice to 10g water vapor?

*asked on July 7, 2015* -
## math

Gather a set of data. Choose a small sample, between 10 and 20 pieces of data, and a simple value to measure, such as the ages of visitors in a park, or the number of text messages each person in your family receives in one day. Choose a display for your

*asked on March 25, 2015* -
## physics

While you are in detention after school, your teacher tells you to slide a large, 89.7 kilogram box across the floor. The coefficient of static friction (ìstatic) between the box and the floor is 0.50. Compute the force parallel to the ground (F

*asked on January 12, 2015* -
## Physics

The surface area of an adult human is about 1.8m2 . Suppose a person with a skin temperature of 34 ∘C is standing nude in a room where the air is 25∘C but the walls are 17 ∘C. A) There is a "dead-air" layer next to your skin that acts as insulation.

*asked on November 30, 2014* -
## Chemistry 101

A solution containing 83.100 g of sodium hydroxide [molar mass = 40.0 g/mol] was neutralised using phosphoric acid. Calculate the moles of sodium phosphate formed (assuming that the reaction goes to completion). Give your answer to three significant

*asked on October 13, 2014* -
## Applied Business Law - 2

As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation,

*asked on September 5, 2014* -
## Algebra 2

The highest speed reached by a solar powered vehicle is 48.71 mph. This record was set by a Sunracycer on June 24, 1988 in Meza, AZ. How far could this car travel in 2.5 hrs at this speed.

*asked on June 15, 2014* -
## Algebra 2

1.) The chief designer for a large automobile company is considering 4 different radiator grills, 2 different style of headlights, and 5 different rear fender designs. If an automobile style consists of a grill, headlight, and rear fender, how many

*asked on May 8, 2014* -
## Biology

Briefly describe how the process of dehydration synthesis creates polymers.

*asked on April 16, 2014* -
## Math

There are some caps in a box. 1/6 are red, 1/3 are blue, and 3/7 of the remainder are green. If there are 27 green caps, how many caps are there all together?

*asked on November 14, 2013* -
## Biology/Chem

Soy sauce is prepared by fermenting a salted mixture of soybeans and wheat with several microorganisms including yeast over a period of 8-10 months. After the solids are removed, the resulting sauce is rich in lactic acid and ethanol. How aere these 2

*asked on October 19, 2013* -
## Chemistry

The extracellular concentrations of Na+ and K+ are 135mM and 6mM, respectively. The intracellular concentrations of Na+ and K+ are 10mM and 105mM, respectively. The membrane potential is 75mV. For Na+/K+ ATPase, 3Na+ are exported and 2K+ are imported.

*asked on September 29, 2013* -
## Algebra

If Don Gecewicz invests $5000 at 9% interest compounded quarterly, find the amount after 4 years.

*asked on May 27, 2013* -
## algebra

Christine lives in Bangor, Maine , and her friend Denise Brown lives in Sioux City, Iowa. They both drive to Dade City, Florida, for the winter. The trip is 1600 miles for Christine and 1500 miles for Denise. If Christine drives 5 miles per hour faster

*asked on May 2, 2013* -
## Calculus

Evaluate the following limits (x^2 + 2x - 8)/x-2 Lim x->2

*asked on April 29, 2013* -
## Math

How many 6 inch pieces can you cut from a spool of ribbon that is 10 yards long?

*asked on April 4, 2013* -
## algebra

Find the 11th term of the arithmetic sequence 7, 4.4, 1.8, -0.8, … A. -33 B. -19 C. 33 D. 19 B

*asked on March 5, 2013* -
## algebra

Find S10 for (-1) + (-7) + (-13) + (-19) +... A. 250 B. -280 C. (-23) D. 132 C.

*asked on March 5, 2013* -
## algebra

Find S25 for 1/2 + 1 + 3/2 + 2 +... A. 160 B. 162 C. 160.5 D. 162.5 I think D

*asked on March 5, 2013* -
## algebra

Find S10 for 2 + 5 + 8 +... A. 155 B. 152 C. 255 D. 135 I say A.

*asked on March 5, 2013* -
## Math

Althea invested $10,000 for one year, part at 7% and part at 6 1/4%. If she earned a total interest of $656.50, how much was invested at each rate?

*asked on March 3, 2013* -
## algebra

Find the maximum or minimum of the following quadratic function: y = x2 - x - 56. A. -56 B. 56 C. -225/4 D. 225/4 d

*asked on February 4, 2013* -
## algebra

Which of the following relations is a function? A. {(5, 2), (3, 2), (4, 2), (5, 1)} B. {(1, 2), (1, 3), (2, 1), (3, 4)} C. {(1, 3), (2, 6), (3, 8), (1, 7)} D. {(1, 4), (8, 9), (10, 11), (12, 12)} I say c

*asked on February 4, 2013* -
## algebra

f of x = the square root of 2x minus 5 Find f(7) A. 2 B. 3 C. -5 D. 7 A

*asked on February 4, 2013* -
## algebra

f of x = the square root of 2x minus 5 Find f (27) A. 2 B. 3 C. -5 D. 7 D not sure on this stuff, could you explain the steps?

*asked on February 4, 2013* -
## algebra

f of x = the square root of 2x minus 5 Find f(4.5) A. 2 B. 3 C. -5 D. 7 B

*asked on February 4, 2013* -
## algebra

What is the range of the inverse of relation {(1, 7), (2, -4), (5, 6), (2, 8)}? A. {1, 2, 5} B. {-4, 6, 7, 8} C. {1, 5} D. {-4, 7, 8} B

*asked on February 4, 2013* -
## algebra

Simplify the rational expression: x−5 /x 2 −x−20 A. x−4 B. x+4 C. x 2 −15 D 1 /x+4 D

*asked on February 3, 2013* -
## algebra

Find f o g if f(x) = 2x - 1 and g(x) = x + 2. A. 2x - 3 B. 2x + 1 C. 2x - 1 D. 2x + 3 B

*asked on February 3, 2013* -
## algebra

Find f o g if f(x) = x + 7 and g(x) = 3x – 2. A. 3x + 5 B. 3x - 5 C. 3x + 19 D. -3x - 19 D

*asked on February 3, 2013* -
## algebra

Find g of f if f(x) = 2x - 1 and g(x) = x + 2. A. 2x - 3 B. 2x + 1 C. 2x - 1 D. 2x + 3 D

*asked on February 3, 2013* -
## algebra

Find g o f if f(x) = x + 7 and g(x) = 3x – 2. A. 3x + 5 B. 3x - 5 C. 3x + 19 D. -3x - 19 C

*asked on February 3, 2013* -
## algebra

Find f(x)·g(x) if f(x) = 3x and g(x) = x + 1. A. 3x2 + 3x B. 3x + 1 C. 4x + 1 D. 3x2 + 1 D

*asked on February 3, 2013* -
## algebra

Find the slope between points (4, 6) and (-2, 6). A. 0 B. Undefined slope C. one fourth D. -4 D

*asked on February 3, 2013*