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A spring has a length of 0.190 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 2.80 kg mass hangs from it.(
1. 1 answer
2. 1,036 views
(a) A bathroom scale has a spring that is compressed by 1.50 cm when a 165 kg person stands on the scale. Assuming the spring is
1. 1 answer
2. 1,423 views
A spring has a length of 0.260 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 1.90 kg mass hangs from
1. 1 answer
2. 2,280 views
While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would
1. 1 answer
2. 1,353 views
(a) What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 50.0°C and a cold
1. 0 answers
2. 467 views
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in
1. 0 answers
2. 466 views
When 1.60 multiplied by 105 J of heat enters a cherry pie initially at 20.0°C, its entropy increases by 470 J/K. What is its
1. 0 answers
2. 347 views
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is
1. 0 answers
2. 598 views
A spring has a length of 0.190 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 2.80 kg mass hangs from it.(
1. 2 answers
2. 987 views
When 1.60 multiplied by 105 J of heat enters a cherry pie initially at 20.0°C, its entropy increases by 470 J/K. What is its
1. 0 answers
2. 372 views
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in
1. 0 answers
2. 519 views
(a) What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 50.0°C and a cold
1. 0 answers
2. 437 views
While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would
1. 0 answers
2. 699 views
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is
1. 0 answers
2. 711 views
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in
1. 1 answer
2. 538 views
When 1.60 multiplied by 105 J of heat enters a cherry pie initially at 20.0°C, its entropy increases by 470 J/K. What is its
1. 1 answer
2. 485 views
(a) What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 50.0°C and a cold
1. 0 answers
2. 516 views
While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would
1. 0 answers
2. 498 views
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is
1. 0 answers
2. 739 views
The pressure exerted by a phonograph needle on a record is surprisingly large. If the equivalent of 1.00 g is supported by a
1. 4 answers
2. 6,120 views
A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it
1. 2 answers
2. 2,750 views
What is the final velocity of a hoop that rolls without slipping down a 5.00-m-high hill, starting from rest?
1. 2 answers
2. 2,857 views
. (a) Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.400 kg ⋅ m2. (b)
1. 1 answer
2. 5,390 views
What is the moment of inertia of an object that rolls without slipping down a 2.00-m-high incline starting from rest, and has a
1. 2 answers
2. 5,924 views
Suppose you exert a force of 180 N tangential to a 0.280-m-radius 75.0-kg grindstone (a solid disk). (a)What torque is exerted?
1. 2 answers
2. 7,566 views
A golf ball rolls off a horizontal cliff with an initial speed of 12.2 m/s. The ball falls a vertical distance of 17.3 m into a
1. 1 answer
2. 3,956 views
A meteoroid is speeding through the atmosphere, traveling east at 23.1 km/s while descending at 18.3 km/s. What is its speed, in
1. 1 answer
2. 1,009 views
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0475 s, during which
1. 1 answer
2. 500 views
A tennis ball is struck and departs from the racket horizontally with a speed of 27.3 m/s. The ball hits the court at a
1. 0 answers
2. 699 views
How many liters of 20 Volume H2O2 will contain one mole of hydrogen peroxide?
1. 1 answer
2. 432 views
Hearst Castle is 180 miles from Ventura by road. Two coaches leave Ventura at the same time, both heading for Hearst Castle, but
1. 0 answers
2. 485 views
A theater company's annual profit is modeled by the equation P= 0.2x^2-6.8x, where x is the number of plays performed in a year.
1. 1 answer
2. 546 views
Mr. Jones estimate his profit starting in 2006 will be given by the formula P=7t^2-14t+10 where t is number of years and P is
1. 1 answer
2. 381 views
Two point charges totaling 9.00 µC exert a repulsive force of 0.300 N on one another when separated by 0.596 m. (A) What is the
1. 0 answers
2. 975 views
Problem #2 from page 173Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if
1. 1 answer
2. 1,393 views
Serena paid $20.20 for 36 rulers and folders. She bought 16 more folders than rulers. If each folder cost $0.50 more than each
1. 3 answers
2. 1,982 views
"One leg of a right triangle is 50.A line parallel to the other leg and at a distance of 20 from that leg cuts off a right
1. 0 answers
2. 727 views
Question 11 of 205.0 Points Under the Fourth Amendment, which of the following is NOT a valid purpose for setting up a
1. 5 answers
2. 2,764 views
webassign(.)net/yf/22-30.gifThe image above shows some of electric field lines due to 3 poin charges along the vertical axis.
1. 1 answer
2. 670 views
How many molecules are there in 24 grams of FeF3 ? Can somebody please show me how i can get to the answer ? Thank you
1. 1 answer
2. 932 views
Roger knows how many keys a piano has. He knows that some of the keys are broken. How can he find the number of keys that work?
1. 1 answer
2. 606 views
a mother wants to invest 5000 for her sons future education. She invests a portion of the money in a bank certificate of deposit
1. 1 answer
2. 689 views
A bowling ball is dropped from a bridge, and it takes 7 seconds to hit the ground. How far did the bowling ball fall?
1. 0 answers
2. 524 views
2x^3-x^2-6x / 2x^2-7x+6
1. 0 answers
2. 258 views
Please factor 2x^2-xy-y^2Briefly explain steps
1. 1 answer
2. 357 views
X^4y^3-x^2y5
1. 1 answer
2. 287 views
Suppose the coordinate of p=2 and PQ=8 and PR=12. Whare are the possible mid point for line segment PQ?A.-2 &8 B. 2 & 6 C.-2 & 6
1. 0 answers
2. 383 views
I am really stuck in this biology it super hard how do yeast cells benefit from fermentation ?I wil be happy if anyone would
1. 2 answers
2. 758 views
What is the gravitational force between two runners standing 100 meters apart on a track, if their masses are 60 kg and 75 kg
1. 2 answers
2. 447 views
copper (II) flourine comtains 37.42 % of mass. use this percentage to calculate the mass of flourine in grams contained in 28.5
1. 1 answer
2. 1,388 views
A person is pulling a freight cart with a force of 70 pounds. How much work is done in moving the cart 120 feet if the cart's
1. 0 answers
2. 744 views
i still don't know what to do for my science fair please helpthank you justin
1. 2 answers
2. 326 views
write and solve an algebraic equation to find the original mass of the sample of the radioactive isotope uranium -235, which has
1. 0 answers
2. 549 views
Kale is building a small basement suite. The bathroom takes up 1/3 of the suite and has an area of 12m2.1. Draw the room and
1. 1 answer
2. 465 views
Kale is building a small basement suite. The bathroom takes up 1/3 of the suite and has an area of 12m2.1. Draw the room and
1. 6 answers
2. 527 views
Kale is building a small basement suite. The bathroom takes up 1/3 of the suite and has an area of 12m2.1. Draw the room and
1. 4 answers
2. 544 views
Please check my answer to see if I got it right. Thanks.Braden has 1 hour of math homework to do. He spends 2/5 of this time
1. 3 answers
2. 1,534 views
Please check my answer to see if I got it right.Braden has 1 hour of math homework to do. He spends 2/5 of this time complaining
1. 1 answer
2. 847 views
Please check my answers and if there are any other possibilities then please tell me.List all the factors for 45: I got 1x45,
1. 2 answers
2. 746 views
The Momoland Springs Company claims that there are at most 1 ppm (parts per million) of benzene in their water. Test at a=.10n=2
1. 0 answers
2. 525 views
A company claims that cancer patients using drug X will live at least 8 more years.n=25 = 8.5 year s = 1.5 year a) Test at a=.01
1. 0 answers
2. 463 views
Mrs Rama uses 0.4 liters of water melon juice for every 0.9 liters of apple juice to make a jug of mixed fruit juice.A) Find the
1. 1 answer
2. 1,454 views
The person in the drawing is standing on crutches. Assume that the force exerted on each crutch by the ground is directed along
1. 2 answers
2. 3,366 views
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +14 m/s in a time of 25 s. The
1. 2 answers
2. 2,359 views
Copper (II) fluoride contains 37.42% {\rm F} by mass. Use this percentage to calculate the mass of fluorine (in {\rm g})
1. 1 answer
2. 768 views
Dr. S. N. Too ran the above reaction using 10.00 g of 1,5-pentanediol and 7.00 gof HCl. He obtained 9.23 g of
1. 1 answer
2. 474 views
Why should the temperature be kept 48C during distillation?is it because of the melting point?
1. 2 answers
2. 416 views
How can I put A={1,4,7,10,13,16,19,22,25,28} in set builder notation. I just learned this and can't figure it out.
1. 2 answers
2. 761 views
How do corporate America's acceptance of greed influence how we behave in a capitalist society?
1. 0 answers
2. 665 views
How many American adults does OCD affect each year?A. 1.2 million B. 2.2 million C. 3.2 million D. 4.2 million I put D and
1. 7 answers
2. 733 views
It’s important to choose foods that provide more ________.A. Potassium B. Cholesterol C. Mercury D. Carbohydrates I put D and
1. 8 answers
2. 574 views
1. Find the lattice parameter of pure iron at room temperature.2. What is the ratio of the lattice parameter of the iron to the
1. 1 answer
2. 589 views
Is it possible for two points on the surface of a prism to be neither collinear nor coplanar?
1. 1 answer
2. 1,457 views
I would like to know if this would be a good thesis to prove for the novel: The Great Gatsby.Thesis: Nick Carraway as the author
1. 4 answers
2. 547 views
A basketball player throws a ball at an angle of 30º above the horizontal. At what point does the magnitude of the acceleration
1. 1 answer
2. 1,862 views
If the line passing through point (a,1) and (8,7) is parallel to the line passing through the points (4,9) and (a+2,1) what is
1. 1 answer
2. 470 views
I want to be sure I'm using the right formula for this question:Calculate the electric force between 2 electrons that are 5.3 x
1. 1 answer
2. 1,061 views
I am having trouble understanding transformers!!Here is the problem I have to solve: A protable CD player requires 12 volts to
1. 1 answer
2. 582 views
A portable CD player requires 12 volts to operate. A transformer allows the device to be powered from a 120-volt outlet. If the
1. 1 answer
2. 833 views
a + 7b = 7a + 2b = -3
1. 1 answer
2. 240 views
Please help answer these questionsArgument: Anything is possible Therefore, it must be possible that something is impossible
1. 3 answers
2. 1,001 views
REWRITE:1) Correct the problems with this title: Author And The Seventh Day 2) Place commas: Afterwards John went home and he
1. 6 answers
2. 874 views
Three point charges, +6.7e-6, +2.5e-6, and -3e-6, lie along the x-axis at 0 cm, 2.4 cm, and 5.7, repectively.What is the force
1. 1 answer
2. 1,037 views
If an object has twice the electric potential of another object, does it also have twice the electrical potential energy? Why or
1. 1 answer
2. 504 views
bank a is lending money at 5.7% interest compounded annually. The rate at bank b is 5.6% compounded monthly, and the rate at
1. 1 answer
2. 703 views
Need to find equation for 1250=1200+4-375. Is this possible or impossible. Need to find how to figure these type of questions.
1. 3 answers
2. 421 views
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths
1. 1 answer
2. 974 views
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths
1. 1 answer
2. 479 views
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths
1. 1 answer
2. 773 views
What does x equal in x^2/(.81-x)?
1. 1 answer
2. 322 views
What is initial concentration of a sodium acetate if the pH (at epuilibrium) is measured to be 9.30?
1. 1 answer
2. 338 views
Calculate the pH of a 0.87 M NaCN solution. Solve it exactly (no assume x=0.1)
1. 1 answer
2. 473 views
Which of the following would you add to a mixture of CaCO3(s) and its saturated solution to increase the molar solubility of
1. 1 answer
2. 1,256 views
A solution is saturated with Ag2CrO4. a) Calculate [CrO4^2-] in this saturated solution. b) What mass of AgNO3 must be added to
1. 1 answer
2. 521 views
acidic substance secreted by glands in the stomach wall is it pepsinenzyme that breaks down starch into maltose is it salivary
1. 0 answers
2. 593 views
Ca(OH)^2 does not completely dissociate. It only partially dissotiates in water to form OH- and Ca+2. An equilibrium mixture of
1. 1 answer
2. 488 views
Describe a hybrid plasmid. What is this?
1. 1 answer
2. 564 views
a coin is tossed twice, or until the first "tails" appears, whichever comes first. which of the following is the sample space
1. 0 answers
2. 472 views
The data listed below shows the number of hospitals in each state, using the data, complete a frequency table using 8 classes.
1. 0 answers
2. 443 views
The data listed below shows the number of hospitals in each state, using the data, complete a frequency table using 8 classes.
1. 1 answer
2. 473 views

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