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Charles
Questions and answers by visitors named
Charles
, page 2
Questions (249)
Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function.
Sec^-1(-2)
1 answer
463 views
During the middle 1930s the WPA (Works Progress Administration) put unemployed people to work building bridges, roads and school
4 answers
489 views
Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the
4 answers
2,092 views
What is the probability a student answer at least 4 out of five questions correctly on a quiz? n=15, x>=4, p=.20, q=.80
1 answer
403 views
if i ran a 4.6 forty yard dash and i ran down hill at a max speed of 18 miles per hour and punched you right in the face how
1 answer
437 views
In the reaction of N2 and H2 to produce NH3, how many moles of H2 will produce 37.9 grams NH3 if sufficient N2 is present? Do
3 answers
830 views
how to find the lcm of 15,27
2 answers
1,027 views
A ball is dropped from a roof to the ground 4.00 m below. Exactly 0.400 s later, a rock is thrown downwards with some initial
1 answer
339 views
A small airplane with a wingspan of 13.5 m is flying due north at a speed of 70.8 m/s over a region where the vertical component
2 answers
1,115 views
The rotating loop in an AC generator is a square 11.0 cm on a side. It is rotated at 60.0 Hz in a uniform field of 0.800 T.
4 answers
2,914 views
How can pupils be easily helped to understand base ten concepts
1 answer
285 views
Use the data given in table 13.1 on page 846 to construct a frequency distribution with a first class ( in ten thousands ) of
1 answer
408 views
A mass with an initial combined potential energy and kinetic energy of 10,000 joules is dropped onto a fence post to drive it
2 answers
560 views
This is a logs question
If u=x/y^2, which expression is equivalent to log u? 1) log x + 2 log y 2) 2(log x- log y) 3) 2(log x +
4 answers
4,017 views
Which logarithmic equation is equivalent to L^m = E
1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L
4 answers
3,109 views
A tiger leaps horizontally from a 15.0 m high rock with a speed of 7.10 m/s. How far (in meters) from the base of the rock will
3 answers
356 views
Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?
4 answers
3,042 views
Determine the mimimum furnace output for a 2100 sq feet modern house using the formula B=31a
2 answers
828 views
Steam is compressed reversibly to liquid water at the boiling point 100C. The heat of vaporisation of water at 100C and 1.01325
1 answer
756 views
State ten users of accounting iformation and show their intrest 2 enumurate eighth qualities that accounting information must
1 answer
425 views
1.state ten users of accounting information and show their intrest 2. Enlimurate eight qualities that accounting information
1 answer
462 views
1.state ten users of accounting information and show their intrest 2. Enlimurate eight qualities that accounting information
1 answer
388 views
Nigeria has been characterized as the most corrupt country in the world and evidence of corruption has been manifested daily by
4 answers
408 views
How does the structure of the government relate to the criminal justice system?
1 answer
296 views
Ca(OH)2 reacts with CO2 to form CaCO3 and H2O.
A. How many grams of CaCO3 will be formed if 4 grams of Ca(OH)2 are used? B. If
2 answers
681 views
Solve the equation sin2x=2cos2x, for 0 degrees <=x<=180 degrees
4 answers
3,564 views
if Tom is driving 64 kilometers/hour what is his speed in miles/hour?
1 answer
456 views
How can we find the antilogarithm of 9.485?
1 answer
255 views
A mother of triplets wants to buy gum balls the machine has two colors how much will it cost to get three gum apps the same
2 answers
1,060 views
Serena has a square-shaped garden. She wants to put a fence around the outside of the garden. One side of the garden is 8 feet
4 answers
1,074 views
Elbert wants to plant grass seed in his backyard. His yard is shaped like a rectangle that is 6 meters by 7 meters. He plans to
2 answers
697 views
Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and
3 answers
584 views
A simple Atwood's machine uses a massless pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is
2 answers
544 views
A force ~F = Fx ˆý+Fy ˆ| acts on a particle that undergoes a displacement of ~s = sx ˆý + sy ˆ| where Fx = 10 N, Fy = −4
4 answers
5,592 views
A 7453 N piano is to be pushed up a(n) 4.04 m frictionless plank that makes an angle of 25.9� with the horizontal.
Calculate the
4 answers
3,863 views
A spring with spring constant of 28 N/m is stretched 0.2 m from its equilibrium position.
How much work must be done to stretch
2 answers
659 views
A force Fx acts on a particle. The force is related to the position of the particle by the formula Fx = (5.9 N/m3) x3.
Find the
1 answer
889 views
A 35 kg block is pulled at a constant speed along a horizontal surface by a rope with tension FT . The rope is inclined at an
3 answers
683 views
Suppose that the force on the block FT is increased so that the block accelerates (starting from rest) at a = 2.2 m/s2.
Now what
3 answers
539 views
A block sliding on a horizontal surface has an initial speed of 0.5 m/s. The block travels a distance of 1 m as it slows to a
3 answers
2,380 views
A 0.377 kg bead slides on a curved wire, starting from rest at point A(4.8 meters) as shown in the figure.
The acceleration of
2 answers
596 views
A 4 kg block slides along a frictionless horizontal with a speed of 5.1 m/s. After sliding a distance of 7 m, the block makes a
3 answers
1,360 views
Is the main characher in Football Futigive more like an equilateral isosceles or scalene?
1 answer
365 views
“Strontium-90 is a pure beta source.” How could a physicist test this statement?
I am stuck on this one, but I was thinking
3 answers
1,378 views
I am doing a titration lab and need help with a problem. (i used .100M H2SO4)(I used 10.0 ml of Ba(OH)2 solution and added 50.0
4 answers
4,044 views
We heard tommy's loud drumming clearly despite the _______ of the elementary school band practice.
A. Esprit B. Concordance C.
3 answers
413 views
Can someone please help me answer these questions? Is additional information other than what is given needed to solve? Thanks in
2 answers
546 views
An ultrasonic wave in water is a compression wave that travels at 1,400 m/s
A) An ultrasonic wave from a ship travels to the
2 answers
559 views
The air temperature on a certain day is 86 degrees F
A)Convert to Celsius? B) Calculate the sound of speed in air? C)When a 653Hz
2 answers
683 views
Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of
3 answers
1,088 views
A 69-cm-diameter wheel accelerates uniformly about its center from 150rpm to 320rpm in 4.4s . Determine angular acceleration?
3 answers
783 views
If wind blows at 34m/s over a house, what is the net force on the roof if its area is 170m2 and is flat? (At 20 ∘ C dry air
1 answer
617 views
A homeowner is laying sod in her lawn. The lawn is a rectangle with dimensions of 28'*18'. If one piece of sod is a rectangle
2 answers
594 views
A stone projected vertically upward with a speed of 30ms from the top of a tower of height 50m neglecting the air
4 answers
762 views
You are given vectors A = 5.0i - 6.5j and B = -2.5i + 7.0j. A third vector C lies in the xy-plane. Vector C is perpendicular to
4 answers
2,697 views
In order to pass a physical education class at a university, a student must run 1.0 mi in 12.5 min. After running for 10.0 min
4 answers
1,594 views
A 1000 kg Toyota, initially traveling at 40 mph, collides into the rear end of a 2000 kg Cadillac, initially stopped at a red
2 answers
560 views
6. (TCO F) Suppose the December CBOT Treasury bond futures contract has a quoted price of 80-07. What is the implied annual
1 answer
805 views
The denominator of a fraction is one more then the numerator. If 2 were added to both the numerator and denominator, the new
4 answers
914 views
Delia has 493 stamps in her stamp collection. She can put 16 stamps on each page of an album. How many pages can she fill
7 answers
1,129 views
The winner of a raffle will receive 3/4 of the 530.40 raised from raffle ticket sales
10 answers
1,465 views
I have 14 hundreds, 16 tens and 9 ones. What number am I?
3 answers
465 views
e) A fair coin is tossed 6 times. What is the probability of getting exactly 2 heads? What is the mean of this experiment?
1 answer
458 views
A baseball player leads off the game and hits a long home run. The ball leaves the bat
at an angle of 30.0o from the horizontal
6 answers
11,920 views
If 84.1 g of sodium hydroxide are reacted with 51.0 g of aluminum in the following equation:
2NaOH + 2Al + 2H2O --> 2NaAlO2 + 3H2
4 answers
1,228 views
What volume of carbon tetrachloride (density = 2.71 g/mL) contains 2.46x10^25 chlorine atoms?
3 answers
901 views
What volume of carbon tetrachloride (density = 2.71 g/mL) contains 2.46x10^25 chlorine atoms?
I did: 2.46x10^25 Cl atoms x 1
1 answer
382 views
1. A principal-agent problems occur when managerial decisions are not consistent with the firm's shareholders' interests. T
2. A
2 answers
602 views
A box contains 5 red bowls, 6 yellow bowls and 3 white bowls. If 4 bowls are randomly drawn from the box at the same time,
(a)fin
1 answer
417 views
A box contains 5 red bowls, 6 yellow bowls and 3 white bowls. If 4 bowls are randomly drawn from the box at the same time,
(a)fin
1 answer
519 views
A toy company manufactures miniature cars. They sell miniature sports cars in a box. They sell 12 miniature trucks in a box.
4 answers
1,494 views
The solubility of a compound in water is 6.8g/100ml at 25°C..
Calculate the amount of water required to crystallize 10g of the
1 answer
862 views
A committee of 3 members is selected from a club made up of 10 junior members and 20 senior members. What is the expected number
4 answers
1,900 views
Some people experience “heartburn” when eating fatty, greasy foods (similar to the effect that is felt when eating acidic
2 answers
545 views
Design an application that accepts eight friends' first names and displays them in alphabetical order
3 answers
549 views
jane gets 1/2 of a gold star each time she helps her teacher clean up the classroom after class. How many times would Jane need
1 answer
453 views
How do find determine fractions from the greatest to least
1 answer
353 views
A rectangle of length y m and breadth 4 m less than the length. What is the perimeter??
4 answers
559 views
A contractor supplied some items to a school. The contractor's bill is shown below. If each amount includes 5% VAT calculate how
1 answer
410 views
What is the total time of flight of an object projected vertically upwards with a speed of 30m/s? (g=10m/s^2
4 answers
1,848 views
A body is projected such that the horizontal range is twice the maximum height of projection. Find the angle of projection; and
5 answers
1,907 views
One mole of CO2 is to be compressed adiabatically from 1 bar and 25 C. Because of irreversibilities and poor design of the
3 answers
1,314 views
If D=7i-3j+2k. Find the magnitude of D
3 answers
570 views
If D=7i-3j+2k and E=4i+5j-3k. Deduce angle between D and E
4 answers
734 views
Consider two vectors one of magnitude 3 and the other 4 unit, which of the following is not correct? We can combine these
3 answers
751 views
Find the magnitude of the dot product of the two vectors B=6i+j+2k, D=-1+3j. What is the angle between B and D
2 answers
623 views
Find the vector cross product of two vectors C=2i-j and D=i+2j-3k. What is the angle between the vectors
1 answer
1,034 views
An airplane is heading 20degree north flying at 200km/hr relative to the air. Simultaneously the wind carries the plane
3 answers
646 views
A man walks 3km E and then 4km N. What is his resultant displacement?
3 answers
849 views
What volume of 1.0 M NaOH must be added to 1.5 L of 1.20 M CH3COOH (ka=1.8x10^-5) to make the solution a buffer for pH 4.50?
I do
6 answers
495 views
3. The population of Columbus, Ohio, in 2014 was about 823,000. The population of the United States was about 319 million in
6 answers
2,419 views
A 0.5kg mass connected to a light spring of constant 20N/M occilates on a frictionless track. Calculate the total energy of the
1 answer
724 views
Two committees, one with six and one with seven people, are to be selected from a group of eighteen people, with no one person
1 answer
401 views
Bill, Mary, and Joe belong to a club of nineteen people. A committee of twelve is to be selected at random from the membership.
1 answer
477 views
Bill,mary,and Joe belong to a club of nineteen people. A committee of twelve is to be selected at random from the membership.
1 answer
359 views
The atomic mass of CU 63 is 62.9296 amu with a natural abudance of 0.692. The average mass of copper is 63.546amu.What is the
2 answers
569 views
How many times does a palindromic number appear on a 12 hour digital clock between 12 midnight and 12 noon?
10 answers
5,775 views
A certain number of identical resistors are connected in series and their total resistance is measured. When the resistors are
6 answers
632 views
What is the morality of a solution prepared by dissolving 10.60g of sodium trioxocarbonate (v) in enough distilled water to
1 answer
496 views
How do you prepare 17.2cm³ of 36% conc HCL per dm³ of solution?
3 answers
592 views
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