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Questions and answers by visitors named H

Questions (233)

Which is a good description of kinetic energy?conserved energy stored energy energy from the sun energy of motion A person
1. 44 answers
2. asked by H
3. 12,933 views
one word associated with the division operation is each? true right
1. 4 answers
2. 895 views
The value of c for which f(x) = x + c/x has a local minimum at x= 3 is(a) -9 (b) - 6 (c) -3 (d) 6 (e) 9
1. 5 answers
2. 2,050 views
Students were surveyed to find out their favorite ice cream flavors. The results showed that 48% chose vanilla and 20% chose
1. 3 answers
2. 629 views
A small sperical insulator of mass 8.00X10^-2 kg and charge +0.600 mC is hung by a thin wire of negligible mass. A charge of
1. 2 answers
2. 920 views
OK I REALLY NEED HELP!!! and i AM DESEPRATE!! I have a titration courswork tomorow and i need to know the measurment,procedual
1. 1 answer
2. 550 views
How is recombinant DNA technology used today? I have to use bacterial chromosomal or genomic DNA,plasmid,restriction enzyme,
1. 2 answers
2. 629 views
Why are plasmids a good way to carry new DNA into host cells?
1. 1 answer
2. 528 views
Can fragments from two different species (human and bacteria) that are cut by the same restriction enzyme be joined? what enzyme
1. 1 answer
2. 453 views
I have no clue: Two parallel plate capacitors have circular plates. The magnitude of the charge on these plates are the same.
1. 2 answers
2. 935 views
An electron is released at the negative plate of a parallel plate capacitor and accelerates to the positive plate a) as the
1. 2 answers
2. 802 views
The plates of a parallel plate capacitor are separated by a distance of 1.2cm, and the electric field within the capacitor has a
1. 2 answers
2. 807 views
During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud-Vground= 1.3x10^8,
1. 4 answers
2. 764 views
A positive point charge and a negative point charge have equal magnitudes. One charge is fixed to one corner of a square, and
1. 4 answers
2. 1,347 views
Can you explain what happens with PCR?
1. 1 answer
2. 398 views
a.(16-2+13=27) B.(8+2-9=11) c.(3-10+9*7=56) righta and c are correct b is wrong first you said B is wrong then you said its
1. 3 answers
2. 313 views
simplify: 2+3*10/5*3-9= A.-5, B.21, C.-60, D.11 , 2+18-9= 20-9=11 so 11 is right i don't got it can you explain more thanx.
1. 1 answer
2. 334 views
a.(16-2+13=27) B.(8+2-9=11) c.(3-10+9*7=56) right
1. 1 answer
2. 278 views
simplify: 2+3*10/5*3-9= A.-5, B.21, C.-60, D.11 (B) is the answer right
1. 4 answers
2. 491 views
16-10/5+13= A.31,B.1/3,C.139/9,D.27 B is my answer is it right
1. 1 answer
2. 302 views
the smith family is going to buy a home for $150.000.they will need a 10%down payment.how much will they need? my answer is
1. 1 answer
2. 483 views
emily wants a new dress.she only has $30 to spend.she lives in florida where the sales tax is 5%.about(estimate)how much can the
1. 4 answers
2. 1,569 views
emily wants a new dress.she only has $30 to spend.she lives in florida where the sales tax is 5%.about(estimate)how much can the
1. 4 answers
2. 938 views
linda inherited an estate worth $225000.the attorney told her that the inheritance tax was 7% and that they would deduct it from
1. 4 answers
2. 1,319 views
emily wants a new dress.she only has $30 to spend.she lives in florida where the sales tax is 5%.about(estimate)how much can the
1. 2 answers
2. 493 views
daniel has a money market account with $1200.the bank offered him a special rate of 5.25%per month.how much money will he have
1. 5 answers
2. 2,235 views
3*-4=-12 right
1. 1 answer
2. 260 views
sue has $400 in her saving account.if the bank pays her 6 1/2% interest,how much interest will sue earn? $26 is my answer right
1. 7 answers
2. 1,695 views
jim bought a pair of shoes for $50 and laces for $1.if the sale tax is 7%,how much tax must he pay? $3.57 right
1. 2 answers
2. 595 views
write 67 hundredths as apercent?a.670% b.0.067% c.67% d.0.67% (d)or(c)
1. 1 answer
2. 343 views
write 67 hundredths as apercent? 0.67% right
1. 1 answer
2. 391 views
percent means hundredth? true right
1. 3 answers
2. 472 views
the symbol % represents percent or percentage? true right
1. 1 answer
2. 364 views
1/4 + 3/4=1 right
1. 1 answer
2. 248 views
when two numbers are multiplied,the result is called the product? true right
1. 2 answers
2. 569 views
There is a bar magnent falling through a metal ring. The first metal ring is solid all the way around but in the second metal
1. 3 answers
2. 590 views
In a ballistic motion experiment with a ball being lanched from a ballistic launcher and hitting a impact point.How do we
1. 1 answer
2. 365 views
ChromatographyHow can I tell which of two mobile phases is more polar? Does the fact that one solvent (e.g. isopropanol/ammonia)
1. 1 answer
2. 475 views
Explain how the pitch of the roaring sound relates to the length of the tube.
1. 1 answer
2. 389 views
A seashell is basically an open-closed tube rolled up.Explain why you hear a roaring sound (the sound of the sea) when you place
1. 1 answer
2. 453 views
A continuous stream of water is flowing out of a faucet and falling into a sink below. Explain why this stream of water is
1. 2 answers
2. 551 views
Many subatomic particles have the same charge as an electron (e) but much different masses. For instance, the muon has the same
1. 2 answers
2. 490 views
A free electron is captured by a proton forming a Hydrogen atom. If the electron ends up in the ground state then what is the
1. 1 answer
2. 471 views
A free electron is captured by a proton forming a Hydrogen atom. If the electron ends up in the ground state then what is the
1. 3 answers
2. 671 views
Suppose the growth of a population in millions is modeled by 3.2*(4.72)^t. What is the size of the population in millions?
1. 1 answer
2. 1,126 views
Sorry i typed the question wrong.Suppose the growth of a population in millions is modeled by 3.2 * (4.72^t. What is the size of
1. 1 answer
2. 383 views
Which substances in each of the following pairs would have the greater entropy? Explain.(a) at 75°C and 1 atm: 1 mol H2O(l) or
1. 3 answers
2. 1,626 views
What is produced at each electrode in the electrolysis of NaBr(aq) and AgF(aq)?
1. 4 answers
2. 3,690 views
If you jump from rest from a height of 2.0 m above ground, what is your speed (magnitude only), right before you hit the ground?
1. 1 answer
2. 357 views
Give a response of at least 50 words to the following: Describe the graph of the interval [-4, 3).• Explain how this differs
1. 5 answers
2. 754 views
Here is the question: The mortgage department of the company is selling two model homes that are located on the same block. The
1. 2 answers
2. 858 views
Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening
1. 1 answer
2. 351 views
Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening
1. 2 answers
2. 588 views
Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening
1. 1 answer
2. 470 views
I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow
1. 2 answers
2. 508 views
I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow
1. 2 answers
2. 564 views
I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow
1. 2 answers
2. 733 views
My answer to the question below is >=22.5 is it correct0.6x+4<=1.0x-5
1. 1 answer
2. 387 views
I am working on a problem where I am to graph the equation and identify the y interceptthe equation is y+x=-9 On the graph, I
1. 3 answers
2. 574 views
A rectangular field 250 m long by 110 m wide. How much shorter is it to walk diagonally across the field than around the sides?
1. 3 answers
2. 843 views
What would the final volume of water be if 80.0 kJ were added to a 100.0 mL sample at 100.0 degrees Celsius?
1. 2 answers
2. 481 views
A 8.2 gram lead bullet that was stopped in a doorframe apparently melted completely on impact. Assuming the bullet was fired at
1. 2 answers
2. 590 views
trig question2sin^2x+sinx-6=0 how to solve for x when the restriction is x is greater than or equal to zero but less than 2pi
1. 3 answers
2. 911 views
An observer 2 km from the launching pad observes a vertically ascending missile at an angle of elevation of 21 degrees. 5
1. 3 answers
2. 2,310 views
Equal Masses of phosphorus and chlorine react according to the follow equation.2P+3Cl2=2PCl3 Which reagent is in excess and what
1. 2 answers
2. 538 views
An object accelerates from 5.0 m/s to 100m/s. If the object traveled 250 m during this time, what was the acceleration?
1. 1 answer
2. 365 views
A car starting from rest, accelerates at 5.0 m/s^2 fpr an unknown time interval. If the car travels 250 m in the acceleration
1. 1 answer
2. 476 views
solve by using the square root method:(5y+4)^2+100=0
1. 1 answer
2. 331 views
Integral from pi/6 to pi/4 of 2sin(2x)cos(2x)dx=
1. 2 answers
2. 472 views
A 50.0 mL graduated cylinder has a mass of 67.6 g. When it is filled with an unknown liquid to the 38.8 mL mark, the cylinder
1. 3 answers
2. 590 views
What mass of Ca(OH) 2 is required to make 1.5 l of a 4.0% (w/v) solution of Ca(OH)2 in water?
1. 3 answers
2. 400 views
Evaluate the integral using any method:(Integral)sec^3x/tanx dx I started it out and got secx(1tan^2x)/tanx. I know I just have
1. 4 answers
2. 898 views
A ball is dropped from the top of a building. The balls fall 3 times farther during its last second of freefall than it did
1. 2 answers
2. 866 views
A key falls from a bridge that is 45 m above the water. The key falls straight down and lands in a model boat traveling at a
1. 2 answers
2. 944 views
Suppose that we repeat the experiment shown in the video, but we replace one of the cylinders with a cylinder that has twice the
1. 4 answers
2. 3,140 views
27 ft of wire is to be used to form an isosceles right triangle and a circle. Determine how much of the wire should be used for
1. 1 answer
2. 460 views
suppose that the teacher of this class graded solely on a curve - 10% get A, etc.How might this effect students getting into
1. 1 answer
2. 434 views
WHAT IS CENTER OF MASS?
1. 1 answer
2. 458 views
How much heat would be absorbed by 55 grams of copper when heated from 24 degrees Celsius to 40 degrees Celsius? The specific
1. 3 answers
2. 632 views
A bridge 30 m long crosses a chasm. If the bridge is inclined at angle of 20 degrees to the horizontal, what is the difference
1. 2 answers
2. 998 views
You pull a 30.5 kg wooden box with a rope that makes a 23.0° angle with the horizontal at a constant speed. The coefficient of
1. 4 answers
2. 589 views
The distance from earth to the galactic centre is 23000 ly. What constant speed would be required to make the journey in 30 y of
1. 2 answers
2. 578 views
If y = x^3 + 2x^2 if reflected across the line y =x, what is the resulting equation?This is what I have so far: x = y^3 - 2y^2 x
1. 2 answers
2. 462 views
Activity Coefficient for Phosphate Buffers: How would I calculate the predicted pH for Na2HPO4 and NaH2PO4? For hypothetical pH
1. 3 answers
2. 644 views
Beside parasitism, invertebrates exhibit various other symbiotic relationship explain with examples?Please help me
1. 3 answers
2. 561 views
which invertebrate made the transition to life on land,they forced two challenges- the first was to avoid drying out and the
1. 2 answers
2. 532 views
Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=3−x about the x-axis.
1. 3 answers
2. 882 views
Vang Enterprises, which is debt-free and finances only with equity from retained earnings, is considering 7 equal sized capital
1. 2 answers
2. 1,311 views
The first 5 terms of an arithmetic sequence are-2, 5, 12, 19, 26 Find the formula for the nth term of this sequence
1. 3 answers
2. 1,198 views
What organisms use cellular respiration
1. 1 answer
2. 412 views
Which part(s) of the reaction H2O(g) + C(s) ⇀↽ H2(g) + CO(g)will be favored by an increase in the total pressure (resulting
1. 2 answers
2. 698 views
1. You can construct congruent triangles if you know which of the following?A. The Measures of two Angles B. The Measures of
1. 7 answers
2. 1,870 views
A rectangular carton has twice the height one-third the length, and four times the width of a second carton. The ratio of the
1. 5 answers
2. 869 views
For what kind of external environment is a saltwater fish adapted?Isotonic Environment Osmotonic environment Hypotonic
1. 10 answers
2. 6,963 views
6CO2 + 6H2O → C6H12O6 + 4O2How many molecules of carbon dioxide are involved in this reaction? How many molecules of sugar are
1. 6 answers
2. 1,857 views
Find the nth term of the sequence.11. 𝑎6 = −38 and 𝑎11 = −73
1. 1 answer
2. 120 views
Which is the term for an explanation that can be tested? Unit one lesson four
1. 1 answer
2. 86 views
Which is the term for an explanation that can be tested?A: A conclusion B: an analysis C: A hypothesis D: an experiment
1. 1 answer
2. 84 views
You buy a house from your brother and promise to pay him the $25,000 down payment in 2 years with 1.25% simple interest. You
1. 1 answer
2. 102 views
What type of evidence is needed for a hypothesis to be supported or not supported
1. 1 answer
2. 101 views

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