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Dani

Questions and answers by Dani, page 2

Questions (192)

How fast is a city on the earth's equator (such as Singapore) moving due to our planet's daily spin on its axis?
1. 1 answer
2. 422 views
Find the values of the trigonometric functions of è from the information given.cot è = 1/2 , sin è < 0
1. 1 answer
2. 390 views
Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2)A) is f an even or odd function? Justify answer. B) find the domain
1. 1 answer
2. 340 views
Which simple machine does not change the direction of a force?
1. 2 answers
2. 593 views
Oscar picked 12 apples. He gave 1/3 of the apples to Gil and 1/3 of the apples to Becky. How many apples did each of them?
1. 3 answers
2. 813 views
Although the VSEPR theory is correct in predicting that CH4 is tetrahedral, NH3 is trigonal pyramidal,and H2O is bent, the HNH
1. 2 answers
2. 1,208 views
Libby pulls a 3.9kg box to the right with a force of 200 n at a 45 degree angle relative to the horizontal along a frictionless
1. 1 answer
2. 459 views
An object with mass 2.0kg is attached to a spring with spring stiffness constant 240N/m and is executing simple harmonic motion.
1. 2 answers
2. 601 views
A violin string vibrates at 298 Hz when unfingered. At what frequency will it vibrate if it is fingered one sixth of the way
1. 2 answers
2. 934 views
An inclined plane is used to raise a 100 kg box to a height of 5 m. How long must the inclined plane be if a force of 250 N is
1. 2 answers
2. 629 views
The formula for the velocity of an object is , where v is the velocity of the object, d is the distance traveled, and t is the
1. 4 answers
2. 565 views
1) in what context was the crtc and its CanCom regulations established? Describe the rationale for thw creation of the crtc.I
1. 2 answers
2. 531 views
John has 1/4 yard of fabric. He cuts it into 3 equal pieces . What fraction of a yard is each piece of fabric? Choices are A.
1. 6 answers
2. 2,707 views
How many minutes would it take Rachel to jog 3 miles if she jogs 1/15 mile every minute?
1. 4 answers
2. 1,607 views
A ferris wheel has a diameter of 50 meters. If point A is at the lowest point of the ferris wheel, 0 meters. What is the height
1. 2 answers
2. 485 views
the length of a rectangular prism is increasing at a rate of 8 cm/s, its width is increasing at a rate of 3 cm/s, and its height
1. 2 answers
2. 627 views
Previously asked:the length of a rectangular prism is increasing at a rate of 8 cm/s, its width is increasing at a rate of 3
1. 2 answers
2. 517 views
For the reaction3 Mg + N2 → Mg3N2 , what is the maximum amount of Mg3N2 which could be formed from 6.66 mol of Mg and 9.34 mol
1. 3 answers
2. 1,257 views
For what values of a and b is the line 3x+y=b tangent to the curve y=ax^3 when x=–3?
1. 4 answers
2. 2,064 views
Let f(x)=(lnx)^4f'(x)=4(ln(x))^3/x what is f'(e^2)=?
1. 1 answer
2. 385 views
Which salt would result from the acid-base reaction of phosphoric acid and potassium hydroxide?I already know I will have to
1. 2 answers
2. 550 views
AP Chem -Which element is oxidized in the following reaction: CuO(s) + H2 (g)  Cu(s) + H2O (l)
1. 3 answers
2. 639 views
AP Chem ---PbS + O2 = PbO + SO2 Balance the equation and write a short paragraph explaining the electron transfers that happen.
1. 2 answers
2. 614 views
AP Chem ----Which type of radiation is emitted when chromium 51 decays into manganese 51? Show the nuclear equation that
1. 3 answers
2. 879 views
If a radioactive nucleus alpha decays to yield a sodium24 nucleus in 14.8 hours, what was the identity of the original nucleus?
1. 2 answers
2. 697 views
Iron-59 has a half-life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new sample of iron? Please
1. 3 answers
2. 605 views
Iron-59 has a half-life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new iron sample? Please show
1. 2 answers
2. 613 views
A car is stationary at a stop sign when it is hit directly from behind by a truck of mass 3000kg which was travelling at a speed
1. 2 answers
2. 560 views
A car is stationary at a stop sign when it is hit directly from behind by a truck of mass 3000kg which was travelling at a speed
1. 2 answers
2. 534 views
Why is the United States often referred to as the melting pot?-Various cultures from many countries have "melted" together to
1. 6 answers
2. 1,388 views
A boy swings a yo-yo around his head with a force of 50N what is the gravitational force of the yo-yos mass and distance is
1. 3 answers
2. 443 views
a person horizontally pushes a 25 kg couch. Applied force is 18N and average resistive force is 7N. its pushed from rest to a
1. 3 answers
2. 869 views
A 2 by 6 is 1 1/2 in thick. how high would a stack of 2 by 6 boards be if the stack is 10 boards high? Express your answer in
1. 2 answers
2. 692 views
How do I write 0.8% as a fraction in lowest terms?I thought I put .8 over 10 and then multiplied by 10/10 to get rid of the
1. 3 answers
2. 875 views
Use implicit differentiation to find an equation of the tangent line to the curve at the given pointx^2+2xy+4y^2=12. Point
1. 3 answers
2. 950 views
1. For centuries, Arab Muslims had generally welcomed Christian pilgrims to the Holy Land. Which group later took control of the
1. 11 answers
2. 852 views
Quick question:What is 9 squared written in standard form? It should be 81 correct?
1. 7 answers
2. 1,875 views
The diameter of a neutral neon atom is about 1.4 ✕ 10^2 pm. Suppose that we could line up neon atoms side by side in contact
1. 2 answers
2. 804 views
One isotope of a nonmetallic element has mass number 16 and 7 neutrons in the nucleus. The anion derived from the isotope has 10
1. 3 answers
2. 1,460 views
What is...-1/2+1/3=_____ -1 1/5+-(-6 1/2)=_____ 5/8-(-2/8)=_____ -9/10-2/5=_____ 6 3/5-(2 1/5)=_____
1. 5 answers
2. 350 views
The city highway department bought 3/4 tons of salt to put on the road when it snows. They have used 2/7 of salt. How many tons
1. 10 answers
2. 3,163 views
1/2 divided by 1/2=1?
1. 3 answers
2. 312 views
What is the part of the story in which the conflict eases?
1. 45 answers
2. 2,850 views
Which of the following best describes an expository essay?a. An essay that uses casual, conversational language. b. An essay
1. 5 answers
2. 2,502 views
According to "Life Without Gravity" why can astronauts' muscles become weak?a. Without gravity, the blood is rerouted from the
1. 45 answers
2. 8,449 views
A 0.1219-g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter
1. 3 answers
2. 699 views
A sheet of gold weighing 11.4 g and at a temperature of 15.6°C is placed flat on a sheet of iron weighing 24.2 g and at a
1. 2 answers
2. 599 views
A 77.40 kg piece of copper metal is heated from 19.6°C to 337.3°C. Calculate the heat absorbed (in kJ) by the metal.
1. 2 answers
2. 514 views
A 45-kg person drinks 390. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 17% of the energy in milk
1. 2 answers
2. 503 views
In 'first confession' Gran is described as a ?A. Flat character < B. Round character C. Stock character D. Antagonist < I think
1. 2 answers
2. 1,247 views
Hi. I need to check my answers and I would hate to get them wrong because of one little mistake. Thanks!1. An argumentative
1. 10 answers
2. 4,299 views
Ethanol (C2H5OH) and gasoline (assumed to be all octane, C8H18) are both used as automobile fuel. If gasoline is selling for
1. 3 answers
2. 1,381 views
Calculate the heats of combustion for the following reactions from the standard enthalpies of formation listed in Appendix 2.
1. 3 answers
2. 1,637 views
Calculate the heat of decomposition for this process at constant pressure and 25°C. (Look up the standard enthalpy of formation
1. 3 answers
2. 954 views
Calculate the work done (in joules) when 5.0 mole of water is frozen at 0°C and 1.0 atm. The volumes of five moles of water and
1. 2 answers
2. 659 views
How do party whips influence legislation??Please help!!
1. 3 answers
2. 1,180 views
Hi! I don't understand this Math problem and I was wondering if I could have some help? It would be greatly appreciated! Thanks!
1. 3 answers
2. 573 views
Solve the inequality. Explain all steps and identify the properties used.3a-4 less than or equal to 5 My answer: First, you add
1. 32 answers
2. 7,916 views
How far from the wall must you place a ladder of length 12m. if the ladder is to touch a point 10m above the ground?
1. 4 answers
2. 1,022 views
What is the sum of the arithmetic series 5 (sigma sign) n-1 (3n-2)?
1. 9 answers
2. 6,726 views
The president is the author of the nation's public policies in his or her role ofA commander in chief B chief legislator C chief
1. 4 answers
2. 1,626 views
What is an equation of a parabola with the giveb focusFocus:(-2,0)
1. 3 answers
2. 367 views
I have 3 1-6 cubes looking for different ways to roll the sum of 12, How many ways will it be?
1. 7 answers
2. 933 views
Which type of context clue can be used to determine the meaning of the capitalized word?As the winning team rushed onto the
1. 4 answers
2. 1,223 views
Hi! I quickly just need to know what is an irrational number? Thanks! ~Dani
1. 6 answers
2. 435 views
Use the data in the table to calculate the equilibrium constant for the following reaction.HCOOH(aq)+ OH −(aq) equilibrium
1. 4 answers
2. 3,254 views
The ratio of the number of men to the number of women in a club is 3:7.There are 12 more women than men.How many members are
1. 4 answers
2. 969 views
In Chile celebrations often revolve around:A) an asado B) a pebre C) a manteo D) a lúcuma I know that an asado is a type of
1. 7 answers
2. 8,136 views
Mr lee is 56 years old. His nephew, sam, is 4 years old. In how maby yearsâ€™ time will mr lee be 5 times as old as his
1. 7 answers
2. 2,907 views
Minah and rohana had a total of $338 at first. After minah’s mother gave her another $49 and rohana spent half of her money,
1. 4 answers
2. 1,124 views
Mrs lao bought 5 blouses and 6 skirts for $108. Three skirts cost as much as 2 blouses. How much did she pay for the 6 skirts?
1. 1 answer
2. 478 views
How are stem changing ir verbs different from stem changing ar and er verbs in the present subjunctive?
1. 4 answers
2. 1,179 views
The width (w) of a rectangular pool is x+4. The area (A) of the pool is 2x^3 - 29x + 12. What is an expression for the length of
1. 6 answers
2. 3,648 views
Simplify x/6x-x^2I know that the answer is 1/6-x but the answers look like this: A. 1/6-x where x is not equal to 0,6 B. 1/6-x
1. 4 answers
2. 804 views
A rocket launched from earth with a rest mass of 150,000Kg moves at 2.8x10^8 m/s during a voyage that takes 1.3 years, according
1. 2 answers
2. 522 views
If you had a sample containing 55 alpha particles, how many protons would be present in that sample?
1. 2 answers
2. 1,179 views
Two car drive along the same road towards each other one at 15m/s and the other 12 m/s. Each car horn sounds at 256 hz.
1. 5 answers
2. 909 views
OABCDE is a right triangular prism with OA = 2units , OD= 2units and AB = 4 units. The unit vectors i,j and k are parallel to
1. 4 answers
2. 470 views
how does word choice matter? Consider academic voice as well as the dialect words used in Amigo Brothers.
1. 1 answer
2. 376 views
If z=costheta +isintheta, prove thata) z = 1/z b) z+1/z = 2costheta c) z-1/z=2isintheta Hence ,deduce that z^2-1/z^2
1. 3 answers
2. 881 views
Simplify (1+iroot3)^9 + (1-iroot3)^9 in x+iy form
1. 1 answer
2. 256 views
a) (x-1)root(5-x) dxb) x^2cos3x dx c)(1/x^3) lnx dx
1. 1 answer
2. 300 views
Show that the function f(x) e^xcosx has exactly one turning point when x is between 0 and 90 degrees. Determine the nature of
1. 1 answer
2. 413 views
Since B=Ae^kt, Given that there are 350 bacteria present initially and there are 1700 after 4 days , find the number present
1. 1 answer
2. 309 views
What is the decimal that is equivalent to three and ten hundredths
1. 10 answers
2. 5,786 views
What is the average of the following five numbers? Report your answer to the correct number of significant figures.3.6, 3.51,
1. 1 answer
2. 271 views
I really need help it's kinda long but not long and it's for American History.use the picture to help!!! Based on what you
1. 3 answers
2. 493 views
A diver with mass 55kg jumps 0.8m into the air. She lands on a diving board that bends down a deflection of 0.4m. What is the
1. 1 answer
2. 260 views
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to
1. 2 answers
2. 1,045 views
A gas occupies a volume of 2.4L at 740 torr pressure. What pressure will it occupy at 1.5atm?
1. 4 answers
2. 244 views
Mg+2HCl=MgCl2+H2When 1.50 grams of magnesium is combined with 100.0mL of HCL to make 101.5mL of solution in a coffee-cup
1. 1 answer
2. 306 views
An N>1 is abundant if the sums of its proper divisions are greater than M. calculate the smallest abundant integer.Un entero n>
1. 1 answer
2. 77 views

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