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Questions and answers by visitors named R

Questions (173)

A baseball player puts a baseball on a batting tee. The baseball bat is able to deliver 4.0x10^5 W of power and is in contact
1. 5 answers
2. asked by R
3. 3,650 views
An isosceles triangle has a height of 12.5 m (measured from the unequal side) and two equal angles that measure 55°. Determine
1. 5 answers
2. 3,779 views
1.Some of the pie---(is,are)missing.2.Alof the pies---(is,are)missing. Fill in the blanks with suitable forms of verbs.
1. 5 answers
2. 5,434 views
Your school’s marching band is performing at halftime during a football game. In the last formation, the band members form a
1. 4 answers
2. 1,756 views
An unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0°C. (the gram
1. 4 answers
2. 1,535 views
Monica is constructing a box in the shape of a right rectangular prism to hold grain on her farm. Use the formula for the
1. 1 answer
2. 45 views
It seems as though I have forgotten where to put commas when I'm listing and using quotations...Would it be... I see words that
1. 1 answer
2. 480 views
If you just land in Australia no sign of civilization wat would you do to make a axe or something sharp to cut wood to make
1. 1 answer
2. 546 views
In how many ways can the letters in Saskatchewan be rearranged and still maintain the order in which the vowels appear?My guess:
1. 1 answer
2. 668 views
For the formula Y = AX + Bto make X the subject wod it be X = AY – B ?? no ax+b=y subtract b from both sides, then divide both
1. 4 answers
2. 1,575 views
What is molecule, element, and compound? What is the relationships between them?
1. 3 answers
2. 488 views
I need help with these two math problems. i have been trying those for two hours. Can't find the answer.use grouping symbols to
1. 2 answers
2. 515 views
When a sample of methyl salicylate weighing 5.287 grams is burned in excess oxygen, 12.24 grams of CO2 and 2.522 grams of H2O
1. 3 answers
2. 1,143 views
i need the word for following definition:1 incorporation of materials into organism's body 2 taking in food from the
1. 4 answers
2. 909 views
Can sombebody explain what C.E. B.C.E A.D. B.C. I know the definition for each term but I just don't get the system. It would be
1. 4 answers
2. 388 views
The color change of the bromothymol blue with water is caused by carbon dioxide from your breath. How can you test this
1. 5 answers
2. 1,225 views
It is kind of logic question that deals with math. A Contractor needs 54 square feet of bricks to construct a rectangular
1. 4 answers
2. 571 views
Could you name me a psychologist who studied empathy?
1. 3 answers
2. 460 views
I know i am not suppose to ask this kind of question but I thought the teachers here can help me. The question is :Retaking the
1. 4 answers
2. 542 views
algebra in 8th your teacher is giving you a test worth 100 points containing 40 questions. There are two-point and four-point
1. 2 answers
2. 568 views
A ball of mass oscillates on a spring with spring constant = 200 . The ball's position is described by (0.350 ) 16.0 with
1. 3 answers
2. 1,483 views
The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum
1. 1 answer
2. 465 views
three vectos are shown in fig. 3-32. their magnitudes are given in arbitrary units. Determine the sum of the three vectors. Give
1. 4 answers
2. 1,051 views
a) If the pressure and volume of a gas both increase, will the temperature increase or decrease?b) If the pressure is doubled
1. 2 answers
2. 669 views
Partial balance sheets for ABC Company and additional information are provided below.ABC Company, Partial Balance Sheets, As of
1. 1 answer
2. 710 views
Stand on a 200 meter high building and, at noon, drop a ball. At what time does it hit the ground
1. 1 answer
2. 387 views
In what ways is the health problem affected by the family, the economy, and the polity? What innovations could help ameliorate
1. 1 answer
2. 396 views
A stone falls from rest from the top of a cliff.A second stone is thrown downward from the same height 3.3 s later with an
1. 2 answers
2. 1,352 views
Solve 5x^3 – 6x^2 – 4x – 8 = 0
1. 2 answers
2. 478 views
Why would the percent recovery obtained over 100% in a an experiment dealing with the cyclic chemical reactions of copper?
1. 2 answers
2. 653 views
M says that every number in the nineties is composite.J says that one number in the nineties is prime. who is correct?
1. 7 answers
2. 585 views
An object is situated so that its center of mass is located at the origin.Three forces X,Y, and Z act on the object at the same
1. 3 answers
2. 670 views
Two small, identical metal spheres contain excess charges of -10.0 x 10^-6 C and 6.0 x 10^-6 C, respectively. The spheres are
1. 2 answers
2. 1,216 views
This character is ma (neutral), correct? Thank you.吗
1. 1 answer
2. 367 views
How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by
1. 1 answer
2. 474 views
How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by
1. 3 answers
2. 1,993 views
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. One object is a 200 g cube of
1. 2 answers
2. 817 views
A pond with a flat bottom has a surface area of 820 m^2 and a depth of 2.0m. on a warm day, the surface water is a temperature
1. 4 answers
2. 1,411 views
An electrical generating plant operates at a boiler temperature of 220 deg C and exhausts the unused heat into a nearby river at
1. 4 answers
2. 2,414 views
how to make "nous allons en classe pendant le week-end" negative
1. 4 answers
2. 454 views
Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp =
1. 2 answers
2. 597 views
Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp =
1. 1 answer
2. 1,223 views
A ball of mass 0.750 kg is attached to the end of a 1.20m long cord that can withstand a maximum tension of 50.0 N. If swung in
1. 2 answers
2. 543 views
A small marble is suspended from a 45 cm string and creates a conical pendulum (like in the picture beside question #57). The
1. 1 answer
2. 442 views
A compact car can achieve a maximum acceleration of 3.2 m/s^2. If dice were hanging from the rearview mirror, what angle would
1. 2 answers
2. 884 views
A horizontal spring with k = 45 N/m is attaches a 1.0kg block to a spring hung from the ceiling. A block is pulled down to a
1. 1 answer
2. 482 views
An apple (m = 125g) is attached to a vertical spring (from a ceiling) that has a k value of 55 N/m. The apple is held up so the
1. 1 answer
2. 464 views
A baseball of mass 148g is travelling at 35.0m/s [E] collides with a baseball bat. the collision lasts for 1.10ms. After the
1. 3 answers
2. 625 views
Max is throwing a 57g tennis ball upward and hitting it (with a racket) when it reaches the top of its flight. If the racket
1. 3 answers
2. 447 views
A truck has a momentum of 5.8x10^4 Ns [S]. An average force of 2.2x10^3 N [S] increases the truck's momentum for the next 8.8s.
1. 4 answers
2. 816 views
The roller coaster starts with a velocity of 16 m/s. One of the riders is a small girl of mass 26 kg. Find her apparent weight
1. 3 answers
2. 1,390 views
The sled is stuck in the snow. A child pulls on the rope and finds that the sled just barely begins to move when he pulls with a
1. 4 answers
2. 1,096 views
Consider the stability of a ladder of mass m and length L leaning against a wall. A painter wants to be sure the ladder will not
1. 2 answers
2. 540 views
For your twenty-first birthday, your grandfather offers you a gift of $1000 today. However you have the choice of waiting 3
1. 1 answer
2. 778 views
Let V be the volume of the solid that lies under the graph of f(x,y)= (52 − x^2 − y^2)^1/2 and above the rectangle given by
1. 4 answers
2. 2,032 views
LetF(x, y, z) = z tan−1(y^2)i + z^3 ln(x^2 + 10)j + zk. Find the flux of F across S, the part of the paraboloid x^2 + y^2 + z
1. 1 answer
2. 387 views
Aiden has 7/10 cup cereal, 2 2/3 cups pretzels, 1/6 cup raisins and 2/5 cup chocolate chips to make a party mix. How much party
1. 1 answer
2. 265 views
How to do work out C+4=-24
1. 1 answer
2. 407 views
A sprinter set a high school record in track and field, running 200.0 m in 21.5s . What is the average speed of the sprinter in
1. 2 answers
2. 617 views
A solution of ammonia and water contains 1.60×1025 water molecules and 8.50×1024 ammonia molecules. How many total hydrogen
1. 3 answers
2. 1,143 views
How many grams of HCl are formed from reaction of 3.58g of H2 with 8.90g of Cl2?
1. 4 answers
2. 1,506 views
3/4 of seats in a concert hall were occupied. The ratio of adults to children was 7:3. If 90 more adults attended the concert,
1. 5 answers
2. 2,422 views
Bella spent 4/7 of her money on a dictionary and 3 identical books. She spent 1/6 of the remainder on a journal that cost $7.
1. 5 answers
2. 2,159 views
If Will gives Molly $9 dollars he will have the same amount of money as her. If Molly give Will $9, the ratio of money she has
1. 2 answers
2. 568 views
Problem 1: The PDF of exp(X)(6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for
1. 1 answer
2. 897 views
Standing on top of a slope of 5 degrees, i see the top of a building and an angle of elevation of 35degrees15'. i am 160cm tall
1. 3 answers
2. 659 views
"Half the measure of the angle is 25 more than one third the measure of the complement. Find the angle" I don't understand how
1. 3 answers
2. 509 views
I was wondering if someone can identify this citation style:Author. (Date). Doc Title. Title Bar Title. Retrieved ____, 2015
1. 2 answers
2. 506 views
A fire truck emitting a 450 Hz signal passes by a stationary detector. The difference in frequency measured by the detector is
1. 3 answers
2. 2,643 views
How many coulombs pass through a wire that carries a current of 3.2 A for 5.0 h?I=Q/t Q=It Q=3.2*5*60 Q=960 I am told this is
1. 2 answers
2. 586 views
Find the value(s) of k so that each function has 2, 1, and 0 rootsf(x)=kx^2-9x+6 f(x)=3x^2+kx+12 f(x)=9x^2+3x+k I know to use
1. 2 answers
2. 511 views
In the question section of my chapter "Strategies for Enhancement of Food Production" i got d question"What is Quarantine? Give
1. 1 answer
2. 431 views
I have a rectangle MNOP ~ rectangle STUV. What is the length of line TU??First rectangle is MNOP with 10 on top and 4 on the
1. 24 answers
2. 8,714 views
Is 1.256 rational or irrational?Rational*** Irrational
1. 5 answers
2. 3,745 views
1.Honour or reputation ---(is,are)dearer than life.Which of the two words is the most appropriate?
1. 4 answers
2. 530 views
1.This figure is wrong;please strike it-----(fill in with suitable preposition)
1. 4 answers
2. 1,353 views
A circular parallel plate capacitor with plate radius 8.2cm and plate separation .15mm is connected in series with a 16V ideal
1. 2 answers
2. 552 views
What volume, in liters, of 1.09 M KOH solution should be added to a 0.102 L solution containing 9.35 g of glutamic acid
1. 1 answer
2. 383 views
Aqueous sulfurous acidH2SO3 and aqueous sodium chloride are formed by the reaction of aqueous sodium sulfite Na2SO3 and aqueous
1. 5 answers
2. 12,194 views
Solve (degrees):3sin^2(x)-11sin(x)-4=0 It's just a quadratic but doesnt wprk?
1. 5 answers
2. 482 views
A student followed the procedure given in the lab exercise to determine the ascorbic acid content in a commercial vitamin C
1. 1 answer
2. 650 views
Two cars, car X and car Y , start moving from the same point P on a cross intersection. Car X is travelling east and car Y is
1. 6 answers
2. 847 views
We want to construct a closed rectangular box whose base has a length three times the width. The surface area has to be 600 cm2.
1. 4 answers
2. 1,129 views
f(x)=−x3 −x2 +16x+161. Calculate f′(x). 2. Calculate f′′(x). 3. Find the x values such that f(x) = 0. Note: this can
1. 2 answers
2. 523 views
Juliya is 5 years younger than her brother,Tom.how old are they if the product of their ages is 126?
1. 3 answers
2. 634 views
Consider the following cubic curve:f(x)=−x3 −x2 +16x+16 1. Calculate f′(x). 2. Calculate f′′(x). 3. Find the x values
1. 2 answers
2. 469 views
Consider the following cubic curve:f(x)=−x3 −x2 +16x+16 1. Calculate f′(x). 2. Calculate f′′(x). 3. Find the x values
1. 3 answers
2. 496 views
Given:sin x = 4/5, 0 < x < π/2 sin y = 5/13, π/2 < y < π Find the exact value of sin(x + y) I presume I'm supposed to use the
1. 3 answers
2. 750 views
∫ (4x+4)(x^2-2x-3)^2/3 dx
1. 4 answers
2. 284 views
A local hardware store sells three types of boxes; small, medium and large. The cost of the boxes are; small $10, medium $20 and
1. 1 answer
2. 755 views
Which statements represent the relationship between y=2x and y=log2x ?Select each correct answer. The equation y=log2x
1. 3 answers
2. 1,087 views
A playground is to be constructed at the back of a daycare center using 164 feet of fencing. The back of the building will serve
1. 3 answers
2. 863 views
Michael and his sister Jane left their house at the same time going in the opposite direction. Michael drove at an average speed
1. 3 answers
2. 995 views
why is promoting excellence important?
1. 6 answers
2. 381 views
Anabolic steroids can cause growth of facial hair for men.True False* Overdosing when using steroids can lead to death. True *
1. 3 answers
2. 494 views
What kind of equation is 15x=3y linear equation. Inverse variation. Direct variation or joint variation?
1. 4 answers
2. 1,750 views
Does ln((e^u)+(e^v))=u+v or uv?Thanks for clarifying!
1. 3 answers
2. 374 views
What would ln(e^u+e^v) equal?
1. 1 answer
2. 323 views
The speed of sound in air is 343m/s at 20°C. What is the speed of sound at 1000°C?
1. 3 answers
2. 1,808 views
dydt=10−0.2y, y(0)=10.a. Solve this differential equation, I tried solving it and I keep on getting 10. I dont know how to
1. 4 answers
2. 1,486 views

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