Drew

This page lists questions and answers that were posted by visitors named Drew.

Questions

The following questions were asked by visitors named Drew.

why is it that an object can accelerate while travelling at constant speed but not at constant velocity?

light travells in a straight line at a constant speed of 300,000 km/sec. what is the light's acceleration?

in 5 seconds, a car moving in a straight line increases it's speed from 50km/h to 65km/h, while a truck goes from rest to 15km/h in a straight line. which undergoes greater acceleration? what is the acceleration of each vehicle?

For a given nominal interest rate, an unexpectedly low inflation rate ______ the real interest rate. a. increases b. decreases c. has no impact on d. may either increase or decrease e. is subtracted from

Given a single deck of cards, what is the probability of drawing either a king or a diamond? Hint – There are four kings in a deck and 13 diamonds. There are a total of 52 cards in a single deck.

what is the word used for distance traveled per time unit? What is speed in a given direction? And what is the word used for A moving object traveling the same distance in equal units of time?

I have to make a graph showing to the tenth of a second showing velocity, displacement, and acceleration for throwing a tennis ball up three times and letting it hit the ground. My times are 2.85 seconds, 2.56 seconds, and 2.60 seconds. Any help would be...

A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.00 later.

A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.00s later. What is acceleration of rocket. I believe if you use x(final)= x(initial +v(initial)del...

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

A student places 100 mL of tap water in a beaker and uses both a thermometer and a temperature probe to measure temperature. The temperature of the water as measured by the thermometer is 27.7 C. The temperature of the water as measured by the temperature...

A student heats 10.8 g of lead to a temperature of 90.5 C. He places the hot lead into a container of water, initially at a temperature of 24.6 C; the final temperature of the water and lead is 25.2 C. What quantity of heat was lost by the lead?

A flowerpot falls off a windowsill and falls past the window below. It takes the pot 0.42 s to pass this window, which is 1.90 m high. How far is the top of the window below the windowsill from which the flower pot fell?

At t=0 car A and truck B are 350 m apart on a straight road. Starting from rest car A speeds up with a constant acceleration of 10 m/s^2. Truck B is travelling in the opposite direction with a constant speed of 15 m/s. How far away is car A from its start...

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?

A basketball player attempting a free throw shoots the ball at an angle of 35 above the horizontal. The basket is 4.21 m from the foul line and 3.05 m above the floor. If the ball is released at a height of 1.83 m above the floor and it goes through the b...

Explain how four red marbles can make up 1/3 of a group of marbles and three blue marbles make up 1/4 of the same group.

Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution. (Hints: assume you have 1 L of solution (mass 1080 g); molar mass of NaClO is 74.4 g/mol)

A pilot flies an airplane in a vertical circular loop at a constant speed õ = 160 m/s. If the pilot’s apparent weight at the top of the loop is one-third of his true weight when he is on the ground, find the radius R of the plane’s circular path. answer i...

How Would you make a one paragraph thesis 3rd person on an architecture career

When a sample of PCl5(g) (0.02087 mol/L) is placed in 83.00 L reaction vessel at 491.0 °C and allowed to come to equilibrium the mixture contains 103.0 grams of PCl3(g). What is the equilibrium concentration (mol/L) of Cl2(g)? PCl5(g) = PCl3(g)+Cl2(g) Mol...

I have to write a paper tonight answering the question: What is the greatest threat to US supremacy today? Its a opinion paper but I need some media sources to back up my argument. I am having a hard time brainstorming ideas and i feel stuck. Any suggesti...

An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. A parallel-plate capacitor whose plates have area 0.109 m2 has a uniform electric field between its plates with the same energy density as the answer to par...

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 followin...

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. CH3--CH--CH2--CH2--...

How many milliliters of 0.230 M Na2S2O3 solution are needed to titrate 2.349 g of I2 according to the equation below? I2(aq)+2S2O3^2-(aq)->S4O6^2-(aq)+2I^1-(aq)

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 re...

Find the x-coordinates of all points on the graph of y=x^3 - 4x^2 + 5x at which the tangent line is horizontal.

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

.02(2X-3)-0.03(3x(.2)=-.02

Jeff is thinking of a function machine.He says that the output is 5 when the input is 4.What are two different rules that he could be thinking of.

describe 2 details about the life of the Incas

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?

A missile's trajectory takes it to a maximum altitude of 1300Km. If its launch speed is 5.9 Km/s, how fast is it moving at the peak of its trajectory? answer is in Km

Given f''(x)=5x−6 and f'(−3)=−6 and f(−3)=2. find f'(x) and f(1)

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)

3 disadvantages for town crying

How do you solve: (2x+1)(x-4)=0

does sec(x)tan(x)*tan(x)=[sec(x)(tan^2)x]

Find the discriminant. Tell which conic section the graph will be. 3x^2 + 12 xy + 9y^2 + 7x -2y - 100

Hi I need help. Can you show me how to solve this problem? Radical Inequalities. -2 + square root 9-5x greater than or equal to 6

Use Newtons method to find the roots of the equation 1/x=1+x^3

A certain dog whistle operates at 23.5 kHz, while another (brand X) operates at an unknown frequency. If neither whistle can be heard by humans when played separately, but a shrill whine of frequency 9200 Hz occurs when they are played simultaneously, est...

A balloon is being filled at a rate of 4000 cm^3/min. How fast is the surface area of the ballon increasing when the radius is 125 cm? V=4/3pir^3, SA=4pir^2

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.

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.

What is the molarity of the solution produced when 14.1 grams of ammonia is dissolved in sufficient water to prepare .100 liters of solution?

Find the length of the curve y=ã(2x), from x=1 to x=4.

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

A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 19.0 m/s. (a) Where is the ball after 2.00 s for the horizontal and vertical position? (b) If the ball is still in the air, how long before it hits the grou...

A mixture of ethane and ethene occupied 35.5 L at 1.000 bar and 405 K. This mixture reacted completely with 110.3 g of O2 to produce CO2 and H2O. What was the composition of the original mixture? Assume ideal gas behavior Im pretty sure i use dalton's law...

Ice fishing equipment weighing 3,000 N is pulled at a constant speed V = 0.5 m/s across a frozen lake by means of a horizontal rope. If the coefficient of kinetic friction is 0.05, what is the work done (in J) by the fisherman in pulling the equipment a d...

Solve the following and express the answer in scientific notation: (5.4 x 10^4) x (4.5 x 10^8) A. 2.4 x 10^10 B. 24 x 10^11 C. 24 x 10^12 D. 2.4 x 10^3 I say D

The temperature of the water around a nuclear reactor core is about 300 oC. what is this temperature in degrees Fahrenheit? A. 27 oF B. 332 oF C. 572 of D. 573 oF I say D

On a cold winter day, the temperature is -10.0º C. What is the reading on the Fahrenheit scale? A. 10.0 oF B. 12.0 oF C. 13.0 oF D. 14.0 oF I say A

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

The chemical explosive nitroglycerine has the formula C3H5(NO3)3. How many oxygen atoms are in the formula unit for this compound? A. 3 B. 6 C. 9 D. 12 C. 9

What is the gram fomula mass of calcium carbonate (CaSO4)? A. 6 g B. 136.2 g C. 230.0 g D. 235.4 g think B

What is the gram molecular mass of C2H6? A. 8.0 g B. 30.0 g C. 40.0 g D. 50.0 g think B

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

How many atoms are in 1.14 mol of propane (C3H8)? A. 7.55 x 1023 atoms B. 7.77 x 1024 atoms C. 7.55 x 1024 atoms D. 7.55 x 1030 atoms C

How many moles are in 4.81 x 1024 atoms Na? A. 0.799 mol Na B. 7.99 mol Na C. 481 mol Na D. 7.99 x 10-1 mol Na B

In order to determine the number of atoms in a compound, you must know the number of atoms in a representative particle of the compound. True False i think false

What is a problem-solving technique that uses equivalent measurements in ratio form to solve problems? A. Avogadro's number B. Conversion C. Dimensional analysis D. The mole concept A

How many atoms are in 3.14 mol of methane (CH4)? A. 7.56 x 1023 atoms B. 7.56 x 102 atoms C. 7.56 x 104 atoms D. 7.56 x 1024 atoms D

What is the molar mass of hydrogen? A. 1.01 g/mol B. 11.01 g/mol C. 101.1 g/mol D. .0111 g/mol D

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 cr...

Calculate the speed of a 10,000 kg airliner with a kinetic energy of 3.1 x 10^9 J.

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?

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 horseradis...

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

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?

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 com...

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?

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 differ...

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 tempora...

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.

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.

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

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 figur...

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. If th...

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 parallel)...

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...

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.

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 densit...

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.

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

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!

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 ti...

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?

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 s...

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 B...

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 a...

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 kn...

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?

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 ans...

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

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?

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

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

Answers

The following answers were posted by visitors named Drew.

+1,+4,-2 is the oxidation numbers for Rb2SO4 in order that the elements are shown in the formula.

ok i got 0.882, is that correct? How do I calculate the mass of water in the container?

The answer is 9.037x10^-3 but I having trouble arriving to this answer.

The answer is D because if red litmus is immersed in acid it will not be affected red litmus turns blue only if put in *Base, futhermore Blue litmus immersed in acid will turn red.

Start by using the facts such as the punishment vs. crime rates for different states this will give your reader a better understanding of how punishment helps to deter crime there is a wealth of knowledge on how states without capital punishment have at l...

I have the same question and that's all the information that it gives

I got x=10/3 and x=6

4ooN per second

I would help but I'm working on one now

What do we know? r=6.38x10^6m T=1 day=86,400s Part A: T=2(pi)r/V ==> V=2(pi)r/T a=V^2/r (Plug & chug) Part B: Now, what do we know? Only T=1 day=86,400s. We no longer know r. Latitude we'll say is represented by "l". So r(l) = r cos l Once you find that r...

D=[mol.wt*P)/(R*T) D=(29.0 g/mol*0.97atm)/[(0.0821 atm*L/mol*K)*(303.15 K)] =1.13 g/L

what is the wave equation?

You are given V and are solving for dM/dt what do you set it equal to?

This is just for study for exam coming up and says it could be worth up to 12 marks. Not understanding vry well the two

we got a few examples in class but not understanding it at all

yes, i pretty sure i got it as my answer mathes the back of the book

square root of 2x

Another hour gone by working on this and i still can't figure it out. Im totally lost!

Just an explanation without numbers would be awesome, i just want to understand the correct steps to take. Thanks!

Why do we not need to convert N into kg?

thanks, but how come m is not in kg?

The third question is wrong...

The Young's modulus for a material is 8.0 x 1010 N/m2. The material is stretched to a strain of 9.0 x 10-3. How much elastic energy will be expended? (Express your answer in J/m3). Answer: 3240000

Ev= elastic strain energy per unit vol=? Ev=(1/2)*Ey*E2(square) Ey= 8.0*10e+10 N/m2 E= 9.0e-3 so square -> E2= 8.1e-5

No, I didn't find that answer.

nv/Ns=A*e(-Hv/(KT)) K=1.381E-23 Hv= 104000/6.023e+23 A=1 vacancy density=(nv/Ns)*Cu density*(6.023e+23/Cu atomic weight)

I need help with an example of at least one because I do not understand what they mean by the simple measure

Comma after Skydiving, rock climbing, for the first paragraph second paragraph you need a coma after floor, chair, That is all I know

What do you know, I got a 100% as well, thanks Shawn!

Summer, your answer would be hexagonal pyramid :-) The answers for the one that Summer was asking is 1. B 2. C 3. B 4. A 5. B 100% I guarantee

"Anonymous" is 100% correct!

Ms Sue, stop it with the insults! That's not cool!

The answers: 1. D, 285.7 ft^2 2. B, 1536 cm^2 3. C, 803.8 in.^2 4. A, 1607.7 in.^3 5. B, 105 mm^3 6. A, 147 yd^3 7. B, 108 cm^3 8. C, 415 in^3 9. A, 628 mm^3 I swear by these answers. I got a 9/9, a 100% I'm only helping because I have a hard time with th...

1. B, burned 2. A, eating patterns 3. A, heredity 3/3, 100% correct

"Pacman" is correct! :-)

Damon, I understand finding the vertical and horizontal velocities.I start getting confused when I have to integrate the two velocities and use time to find height

could you break down this problem a little more and explain what is happening?

Yes, it does thank you!

CBDAC is 100% correct :-)

There is no equation that corresponds directly to parallel lines. However, when given two points for each line, the slope equation (m=y2-y1/x2-x1) can help. If after doing the equation and reducing (if necessary) you come up with the same answers, then th...

Mutiply 3/4 by 6. It may help to think about it in terms of a fraction 3/4x6/1 In this case you would end up with 18/4, an improper fraction. Some teachers may want mixed numbers (4 1/2). But in higher up math, improper fractions are mainly used. In decim...

"abcd" is 100% correct :-) A 1&3 B

"ok" is 100% correct. 1. A, box-and-whisker plot 2. D, relationship between hours in the car and distance traveled 3. A, a circle graph shows how each category of time relates to the total amount of time 4. B, only the stem-and-leaf plot 5. A, both graphs

Never mind. I was correct.

Thank you for getting back to me so soon! 4. C 5. B Am I correct this time? Thank you for your time. :-)

I figured out number one, which would be 2/13.

I am pretty sure it is D

Hi Ms. Sue. The website was sort of helpful. What I meant was she only wants a short paragraph of how we see the holy spirit in those 5

Why are we teaching our kids this way of math???? So frustrating to see that we are actually making them stupid. Math is math... 2+2 will always be 4!! Teaching them to make the next tens is pointless. Go back to flash cards and teaching them mental math....

I just got a 3/4 from using Nicky answers and they were work the wright answers would be 1.A 2.C 3.B 4.C

Yessss, can someone help pleaase??

Yes, speed gains due to gravity, but once at a certain speed - it will remain at that speed and it's velocity will be constant at it's limit. It just can't gather enough velocity.

1. C 2. A 3. D 4. B 100% you're welcome.

connexus student is right about 1-5 but 6 is D then 7-13 is correct too

Dang, that was rude Ms.Sue was just trying to help

What's the answer

Enthalpy of reaction can be found by using the sum of enthalpies of products minus the sum of reactants. Remember that the Heat of formation of elements in their standard states is 0 kJ/mol. [2(-470.110kJ/mol+(0)]-[2(-285.8kJ/mol)+2(0)]= ?

What is the point of this

I just took this and went off of Cotton Candy Randy and got 4/10 for Lesson 10 Unit 6 Unit Test the answers are as follows : 1. D 2. B 3. C 4. C 5. True 6. D 7. A 8. D 9. B 10. C 11-16 happen to be written responses

Saeed is a middle eastern name and likely not from a culture who procures beef for consumption. Just sayin'

ik its a right triangle but it also has to have the other two measurements.

This is not right.if you going to give info..make it right?

#4 is somewhat dubious. Fiber is not digestible by humans, therefore we cannot get nutrients “from” it. Fiber itself is considered a nutrient though as it is essential for helping to keep us… moving.

I figured this one out for myself haha... directions as follows: 1. -log(Ka)=pKa...-log(4.9x10-5)=4.3098... 2. pH=pKa+log(cA/cHA) 3. pH=4.3098...+log(.440/.100) ans=4.9532... or 5.0

What if the paper is 8.5 x 8.5?

Correct answer is approximately 0.15% of IQ scores are no more than 46.