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Andrea

Questions and answers by Andrea

Questions (771)

Rewrite in rectangular form: r=6 cos thetaI got (x-3)^2+y^2=6
1. 5 answers
2. 5,843 views
1. A spaceship is found to have a tiny leak that allows the effusion of air into space. Air in the spaceship is a mixture of
1. 6 answers
2. 2,838 views
If you had an acetic acid solution that was 0.10 M, what would the acetate concentration have to be in order to get a pH of
1. 4 answers
2. 1,112 views
Europa, a moon of Jupiter has an orbital diameter of 1.34x10^9m and a period of 3.55 days. What is the mass of Jupiter?d=1.34x10
1. 4 answers
2. 5,188 views
Two fractions with different denominators have a sum of 11/12 what are two possible addends that result in the sum?
1. 6 answers
2. 4,107 views
Please! This is urgent!I don't know how to do this. Determine the solubility at 25°C of Cd(IO3)2 in water and in 0.20 M CdCl2.
1. 4 answers
2. 2,351 views
why might Leonard believe that democracy would inevitably degenerate into tumult, violence, and anarchy
1. 4 answers
2. 1,086 views
After rolling a sum of 4, 5, 6, 8, 9, or 10, a player must roll the same sum again before rolling a sum of 7. Which sum 4, 5, 6,
1. 5 answers
2. 1,921 views
What is the difference between a bay and a penninsula?A bay is a body of water -- smaller than a sea or ocean or gulf -- that is
1. 1 answer
2. 610 views
Can someone please help me with an algebra problem?-|4-8b|=12 I really get confused with the absolute value symbols and a
1. 3 answers
2. 1,481 views
At a construction site, a brick fell and hit the ground at 24m/sa) from what height did the brick fall? b) how long was it
1. 1 answer
2. 393 views
I'm having some troubles with these. Thanks in advance.If a>0 find the minimum value. If a<0 find the maximum value. 1.
1. 1 answer
2. 601 views
Year Cash Flow(A) Cash Flow (B)0 -307,206 -27,651 1 14,950 8,726 2 32,391 13,901 3 29,232 9,222 4 390,590 13,140 15% rate of
1. 1 answer
2. 444 views
What was the reason for the downfall of the Han Dynasty and The Roman Empire?Was is partially invasion from barbarians? Han
1. 1 answer
2. 687 views
okay, so what exactly is a story board?I used to assign these. Here were the directions: 1. Divide a page into six sections
1. 1 answer
2. 515 views
how do you foil 12x squared y cubed?
1. 1 answer
2. 313 views
what is the answer to 12x squared y cubed /2xy squared +6xy * y squared +6y+9 /3y cubed +9y squared?You have not written an
1. 1 answer
2. 662 views
what is the answer to 2 square root of 18x?<b>Do you mean 2*(18x)<sup>1/2</sup>? What does it equal. What are we to do with the
1. 1 answer
2. 476 views
can you simplify 12x squared y cubed?
1. 1 answer
2. 315 views
what is the answer to 2i to the 5th power?i^2 = -1 --> i^4 = 1 ---> i^5 = i (2i)^5 = 32 i thanks for the info!
1. 3 answers
2. 446 views
Simplify 2i to the 5th power?(2i)^5 = 2^5 * i^4 * i = 32 (-1)^2 * i = 32 i
1. 1 answer
2. 395 views
Another problem plz help Count Iblis. How do you solve 5/x+2 + 2x/x squared - 4= 3/x-2?5/x+2 + 2x/x squared - 4= 3/x-2 You write
1. 1 answer
2. 511 views
Count Iblis what is the answer to 2 square root sign 18x? The instructions say to simplify or reduce.2*(18x)<sup>1/2</sup>=
1. 1 answer
2. 430 views
Count Iblis how do you simplify 3square root sign with this underneath (3x squared y) to the third power?"3 square root sign"
1. 1 answer
2. 543 views
square root sign 2x+3 - square root sign x-2 =2In my head, I worked it as x=3. I did that because only sqr roots that are
1. 1 answer
2. 468 views
A store gives a staff discount of one fifth. How much would a member of staff pay for:a) a camera with a retail price of £215?
1. 1 answer
2. 387 views
I am putting < for the square root abbreviation. I don't know how to use it on my comp.3<99-2<44-6<11=? On a graphing
1. 1 answer
2. 463 views
I am putting < for the square root abbreviation. I don't know how to use it on my comp.3<99-2<44-6<11=? For Further Reading On a
1. 2 answers
2. 573 views
What are some modern examples of cultural blending in art? Consider music, literature, painting etc..I can't find any info for
1. 2 answers
2. 832 views
A student accelerates from rest at a rate of 3 miles/min^2. How far will the car have traveled at the moment it reaches a
1. 1 answer
2. 665 views
Okay, so apparently ASA and FeCl3 form a violet complex and FeCl3 forms with phenol groups to make purple. Looking at the
1. 1 answer
2. 588 views
Given the following neutralization raction: HCO3^- + OH^- <=> CO2[over]3^- + H2Oa. label the conjugate acid-base pairs in this
1. 2 answers
2. 897 views
: if the quotient 3m^2 +15m / m^2 divided by 30/ m^2 + 5m is simplified to lowest terms, which of the following is the
1. 3 answers
2. 735 views
Line L contains the points given in the table below. If the slope of line m is 1/3 the slope of line L what are three points
1. 1 answer
2. 334 views
In An American Childhood how does Annie Dillard reference life or death through the waterfall scene on page 150
1. 1 answer
2. 392 views
A 50kg skier starts from rest from the top of a 100m slope. What is the speed of the skier on reaching the bottom of the slope?
1. 4 answers
2. 2,734 views
A 50kg skier pushes off the top of a hill with an initial speed of 5m/s. Neglect friction. How fast will he be moving after
1. 1 answer
2. 491 views
A wooden block is moving on a rough level surface. It originally has 25J of kinetic energy. If the friction force acting on it
1. 1 answer
2. 423 views
A 15 N force is needed to move an object with constant velocity of 5 m/s. What power must be delivered to the object by the
1. 3 answers
2. 1,561 views
If your last electric bill for sept. was $105. If the average price is 6.5 cents per kw, how many kw did your household use in
1. 3 answers
2. 736 views
What work is required to stretch a spring of spring constant 500N/m from x1=.2m to x2=.25m? Assume the unstreched position is at
1. 2 answers
2. 1,112 views
A ball falls from the top of a building . through the air(air resistance is present) to the ground below. How does the KE just
1. 3 answers
2. 1,289 views
A 1000kg car accelerates from 0 to 25m/s in 8s. What is the average power delivered by the engine? (1hp=746W)P=W/t p=Fd/t P=Fv
1. 2 answers
2. 577 views
A force of 20 N is applied horizontally to a 1 kg mass on a level surface. The coefficient of friction is .2. if the mass is
1. 2 answers
2. 716 views
Compared to yesterday you did 3 times the work in one third the time. To so so your power output must have been:a) the same as
1. 3 answers
2. 3,531 views
If the net work done on an object is positive then the object's energy is ...?The object's energy would also increase since W=
1. 2 answers
2. 829 views
Consider a roller coster car moving along a track from point A to point B to point C. a)if the roller coaster car starts from
1. 2 answers
2. 757 views
Is the answer to this 4?If the filament resistance in an automobile headlamp is 3 ohms, how many amps does it draw when
1. 3 answers
2. 867 views
A lever is 5m long. The distance from fulcrum to the weight to be lifted is 1m. If the worker pushes on the opposite end with
1. 4 answers
2. 3,622 views
"the total angular momentum of an object changes when a net external force acts on the system." This statement is:a)always true
1. 2 answers
2. 1,300 views
A 2.1kg brass ball is transported to the Moon.a)What is the mass of the brass ball on the earth and on the moon? Wouldn't it be
1. 4 answers
2. asked by Andrea
3. 4,134 views
The mean radius of the Earth is R=6.38x10^6m. At what distance above the Earth's surface will the acceleration of gravity be
1. 1 answer
2. 687 views
Complete the following statement: The term net force most accurately describes:a) quantity that causes displacement b) quantity
1. 4 answers
2. 6,104 views
a rock suspended from a string moves downwards at constant a=g. Which of the following is true concerning the tension in the
1. 2 answers
2. 663 views
two objects collide when sliding on a fricitonless horizontal surface. Which quantity is conserved during their collision?a)
1. 2 answers
2. 638 views
a rock is thrown straight up which of the following statemetns concerning the net force acting on the rock at the top of the
1. 3 answers
2. 1,332 views
complete the statement: in recoila)the initial momentum is zero b)the object sticks together after collision c)the total kinetic
1. 1 answer
2. 372 views
A box of mass 1kg is placed on a table and is connected to a hanging mass m by a string strung over a pulley. If the coefficient
1. 1 answer
2. 477 views
A box of mass 1kg is placed on a table and is connected to a hanging mass m by a string strung over a pulley. If the coefficient
1. 2 answers
2. 745 views
You have just discovered a planetary system consisting of a star (Dagobahr) and its two planets: Rool and Krau. Planet Rool has
1. 2 answers
2. 429 views
A box of mass 1kg is placed on a table and is connected to a hanging mass m by a string strung over a pulley. If the coefficient
1. 1 answer
2. 427 views
Describe what can happen to the three-carbon molecules made in the Calvin cycle.
1. 2 answers
2. 489 views
Why did Japan invade China in 1937?thank you so much =]
1. 3 answers
2. 573 views
Why did Japan invade China in 1937?thank you so much =]
1. 2 answers
2. 534 views
Why did Germany invade Poland in 1941?=]
1. 2 answers
2. 504 views
how would you solve for x in this equation?40.0 = 0+ (x + 2.8)/2multiplied by(8.50)
1. 3 answers
2. 275 views
how would you solve for x? can you explain step by step?40 = [(x+2.8)/2]*8.5
1. 1 answer
2. 359 views
Which type of dilation is determined by a scale factor of 10?enlargement reduction congruence transformation none of these
1. 3 answers
2. 687 views
Find the instantaneous velocity of a mass on a spring oscillating on a horizontal frictionless surface at the instant when its
1. 2 answers
2. 640 views
A mass m=.5kg on a spring with a spring constant. It is displaced by the distance x_max =20cm (.2m) from equilibrium on a
1. 1 answer
2. 449 views
A swing is 2m long. how often do you need to push it to increase its swing's amplitude the most?L=2m When amplitude is the most
1. 1 answer
2. 380 views
Find the instantaneous velocity of a pendulum at the instant when its bob is at the height equal to half of its maximum height
1. 1 answer
2. 477 views
A string of mass m=.1kg is stretched to where its length is L=20m. What is the tension force applied to the string if it takes a
1. 2 answers
2. 549 views
how would you factor 4x-x^2-3/ x-1...so that x-1 would cancel out?could you explain step by step..plz
1. 4 answers
2. 361 views
Find the value of tan(1/2sin^-1 15/17)and sin[pi/2-cos(1/2)] Thanks.
1. 2 answers
2. 921 views
Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of
1. 3 answers
2. 2,660 views
Hi. Can someone help me with this?Simplify: (sin^2x)(cos^2x)+(sin^4x) The answer is sin^2x, but I have no idea how to get there!
1. 4 answers
2. 388 views
Verify that each of the following is an identity.tan^2x-sin^2x=tan^2xsin^2x I can get it down to cos^2 on the right, but cannot
1. 2 answers
2. 756 views
The frequency of a stationary siren is 1500 Hz when measured by a stationary observer. If an observer moves away from the siren
1. 3 answers
2. 534 views
A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the
1. 1 answer
2. 381 views
Why do ocean waves break as they approach the shore?Is it because of the principle of superposition. Would it be described as
1. 2 answers
2. 557 views
A musician plays the middle C note (262 Hz) on a guitar, a piano, and a violin at the same loudness. Will all three instruments
1. 3 answers
2. 903 views
Why do your vowels examples ("aaah", "eee", "uhh") sound different then when I make them? Explain.Tension, mass density and the
1. 1 answer
2. 455 views
A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the
1. 1 answer
2. 443 views
A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the
1. 1 answer
2. 433 views
Why does the FEMA (Federal Emergency Management Area) only allow property owners to collect insurance if they rebuild in the
1. 1 answer
2. 303 views
A guitar string is .75m and has a mass of .005kg. A standing wave is produced when the string is plucked.a) what is the fifth
1. 1 answer
2. 673 views
A violin string is .32m and has a mass of .0005kg. The freqency of the note played is 440Hz. What is the speed of the wave in
1. 1 answer
2. 388 views
A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the
1. 2 answers
2. 609 views
An electric charfe of -3 C is moved from a position where the electric potential is 1 V to a position where the electric
1. 1 answer
2. 436 views
You came across an egg that was a perfect sphere. You placed it in a tub of water and found that it displaced exactly 280,000
1. 1 answer
2. 496 views
Solve sinx+cosx=0Thanks!
1. 3 answers
2. 462 views
You came across an egg that was a perfect sphere. You placed it in a tub of water and found that it displaced exactly 280,000
1. 2 answers
2. 535 views
A battery with voltage drop of 120V is connected in a ciruit containing both series and parallel. Moving in a clockwise
1. 3 answers
2. 576 views
A battery with voltage drop of 120V is connected in a ciruit containing both series and parallel. Moving in a clockwise
1. 2 answers
2. 635 views
The following appliances are being used simultaneously: toster oven, TV, computer, three 100 W light bulbs and an iron. Yet the
1. 1 answer
2. 425 views
If the TV draws a 150W of power, the dishwasher 1500 W of power and the computer 100 W of power, will a typical 15 A circuit
1. 1 answer
2. 421 views
A sexond smaller metal sphere was positioned near the van de Graff machine. THe sphere was grounded. Did this snaller sphere
1. 1 answer
2. 485 views
When Gorix escaped from Dr. Sloth's ship, his ship started at rest. Gorix immediately set his thrusters to full power, and his
1. 1 answer
2. 458 views
If the TV draws a 150W of power, the dishwasher 1500 W of power and the computer 100 W of power, will a typical 15 A circuit
1. 2 answers
2. 487 views

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