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Questions (446)

Water has a density of 0.997 g/mL at room temperature (25 C). If you have exactly 500 mL of water, what is its mass in kg?
1. 1 answer
2. 899 views
Bromine is a red liquid at 25°C. Its density is 3.12 g/mL. What is the volume of 28.1 g of liquid bromine?
1. 1 answer
2. 1,862 views
the standard score for hours spent online at home for Minnesotans was 2.84. The mean equals 8.9 hours. Approximately how many
1. 1 answer
2. 630 views
michael purchased a certain number of shares of one stock for a total of $1400. The second stock was selling for 6$ less per
1. 2 answers
2. 698 views
what is a form of energy that is always transferred from a warmer substance to a cooler one?
1. 3 answers
2. 1,187 views
what does sin2x/cos2x equal to?
1. 0 answers
2. 532 views
xy = 5a) Identify each relationship as direct or inverse variation. b) Calculate the constant of each relationship and explain
1. 1 answer
2. 602 views
An individual with the genetic condition cystic fibrosis has CFTR protein with the amino acid histidine (at position 482), where
1. 2 answers
2. 1,416 views
Which of the following is NOT true of transcription / translation processes in both bacteria and eukaryotes?Select one: a. RNA
1. 1 answer
2. 1,312 views
Gene expression regulation by methylation of the cytosines in a promoter would be considered :Select one: a. Transcriptional
1. 0 answers
2. 772 views
how do u hybridize for sulfate (SO4 -2)?
1. 0 answers
2. 287 views
A person who weighs 829 N steps onto a spring scale in the bathroom, and the spring compresses by 0.538 cm. (a) What is the
1. 2 answers
2. 1,036 views
The figure shows a person whose weight is W = 500 N doing push-ups. Find the normal force exerted by the floor on (a) each hand
1. 0 answers
2. 1,221 views
A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 470 N and have a center of gravity
1. 2 answers
2. 1,737 views
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces,
1. 1 answer
2. 1,289 views
You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude
1. 0 answers
2. 1,094 views
The steering wheel of a car has a radius of 0.19 m, and the steering wheel of a truck has a radius of 0.26 m. The same force is
1. 0 answers
2. 973 views
Calculate the weight of a person with a mass of 67 kg that is holding a 12 kg box on earth
1. 2 answers
2. 3,149 views
a painter charged $320 to paint two walls that measure 12 feet by 9ft and two walls that measured 10 ft by 9 ft. The client asks
1. 1 answer
2. 551 views
Tell whether the sequence is arithmetic. If the sequence is arithmetic, write a function rule to represent it.12, –9, 6, –3,
1. 2 answers
2. 1,804 views
one mile is 5280feet.justin has a stride of 32inches .how many steps will he take to run a 26 mile marathon?
1. 1 answer
2. 488 views
Part (a) of the drawing shows a bucket of water suspended from the pulley of a well; the tension in the rope is 69.0 N. Part (b)
1. 1 answer
2. 477 views
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 5.31 m/s. The car is a
1. 1 answer
2. 459 views
The Space Shuttle travels at a speed of about 5.45 x 103 m/s. The blink of an astronaut's eye lasts about 111 ms. How many
1. 1 answer
2. 1,152 views
what is a thesis?
1. 1 answer
2. 266 views
If one light bulb was removed in a circuit I think the others will go out because it is incomplete is this right? I will the
1. 0 answers
2. 497 views
Can wood, silver or yarn light up a light bulb? I think wood can carry a current.
1. 4 answers
2. 1,524 views
How did Enlightenment thinkers attempt to apply the techniques of the Scientific Revolution to human political and social
1. 1 answer
2. 804 views
Why is 6/8 not equivalent to 18/32 ??
1. 3 answers
2. 484 views
heading due north at 6.00 m/s relative to the water. The local ocean current is 1.53 m/s in a direction 40° north of east. What
1. 2 answers
2. 1,116 views
determine the radius of convergence of the power series:Σ(n=1 to inf) [(2^n * n! * x^n)/ n^n]
1. 0 answers
2. 417 views
1/7[4ln(x+9)-lnx-(x^2-25)]
1. 1 answer
2. 365 views
Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly
1. 2 answers
2. 728 views
Find the volume of the solid formed by rotating the region enclosed byy=e^(5x) , \ y=0, \ x=0, \ x=0.8 around the y-axis Please
1. 2 answers
2. 4,841 views
Justify, with a written explanation or a mathematical reasoning and with a sketch of at least two different cases,the following
1. 0 answers
2. 604 views
Consider the area between the graphs x+y=16 and x+4= (y^2). This area can be computed in two different ways using integrals.Firs
1. 2 answers
2. 3,925 views
Decide whether to integrate with respect to x or y. Then find the area of the region: 2y=5sqrt(x), y=4, and 2y+2x=7.
1. 0 answers
2. 646 views
For the three vectors A+B+C= -1.4i. Vector A is 4i and vector C is -2j.Write vector B as components separated by a comma. What
1. 0 answers
2. 629 views
Let s(t) represent the position of a particle at time t, v(t) is the velocity and a(t) is the acceleration. What is the value of
1. 1 answer
2. 458 views
Use part 1 of the Fundamental Theorem of Calculus to find the derivative ofg(x)= integrate from 9x to 4x of ((u+4)/(u-1))du
1. 0 answers
2. 638 views
Consider the function f(x)=-((x^2)/2)-9.In this problem you will calculate integrate from 0 to 3 of ((-x^2)/2)-9)dx by using the
1. 0 answers
2. 629 views
Use part I of the Fundamental Theorem of Calculus to find the derivative ofg(x)= integrate from 9x to 4x of ((u+4)/(u-1))du
1. 1 answer
2. 653 views
Is this true or false?All objects moving in a circle are accelerated. I really don't uderstand this question.
1. 2 answers
2. 419 views
simplify 380 over 220
1. 1 answer
2. 381 views
Anne throws a ball straight up releasing it from her hand with an initial speed of 20 m/s. The ball is at a height of 1.5 m
1. 2 answers
2. 651 views
Hi, ive been trying to get this problem for a couple of days now but i have no idea of what to do.A very slippery block of ice
1. 2 answers
2. 2,396 views
You have two balloons, one large (30 cm in diameter) and one small (15 cmin diameter) filled with helium. Both balloons are made
1. 0 answers
2. 539 views
I ask a friend to watch my bike while I go shopping, and the bike gets stolen. I can sue my friend for damages but only if I can
1. 1 answer
2. 776 views
A train is traveling at avg speed of 90km/hr. How far will it travel in 205 hrs?
1. 6 answers
2. 358 views
a board is 17ft long and a hole is 1 ft futher from 1 end than it is from the other. How far is the hole from each end of the
1. 1 answer
2. 345 views
a board is 17ft long and a hole is 1 ft futher from 1 end than it is from the other. How far is the hole from each end of the
1. 4 answers
2. 335 views
I can't seem to get this problem, i really don't understand itChemical reactions can also be coupled. The decreasing free energy
1. 0 answers
2. 587 views
The base of a rectangular box is x +2 cm wide and 2x+5 cm long. if the height of the box is x cm, write a polynomial in standard
1. 2 answers
2. 874 views
I have been trying to do this problem for a couple of days but i cant seem to get the answer. Any help would be greatly
1. 1 answer
2. 1,578 views
The circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm. Use linear approximation to estimate the
1. 0 answers
2. 1,044 views
what is the adverb in the sentence: kevin seemed unusually excited at the party.
1. 1 answer
2. 408 views
f (x) = 5x+7x^(23))f^-1(-12) = (f^-1)' (-12) = g(x) = x^2-12x+54 for x is an element of [6, infinity) g^-1(19) = (g^-1)'(19) =
1. 1 answer
2. 379 views
Let y = e^(x/1).Find the differential dy when x = 5 and dx = 0.5 Find the differential dy when x = 5 and dx = 0.01
1. 0 answers
2. 445 views
Let y = ((x^(2))+4)^5.Find the differential dy when x = 4 and dx = 0.4 Find the differential dy when x = 4 and dx = 0.05
1. 0 answers
2. 488 views
Let y = 2(x^(2))+4x+3.Find the differential dy when x = 4 and dx = 0.3 Find the differential dy when x = 4 and dx = 0.6
1. 1 answer
2. 360 views
Let y = tan(5x+2).Find the differential dy when x = 2 and dx = 0.4 Find the differential dy when x = 2 and dx = 0.8
1. 0 answers
2. 712 views
The circumference of a sphere was measured tobe 82.000 cm with a possible error of 0.50000 cm. Use linear approximation to
1. 0 answers
2. 605 views
The linear approximation at x = 0 to sin(8x) isL(x) = A+Bx where A = B=
1. 0 answers
2. 527 views
Use linear approximation, i.e. the tangent line, to approximate ((125.1)^(1/3)) as follows: Let f (x)=((x)^(1/3)).The equation
1. 0 answers
2. 722 views
Find the linear approximation of f (x) = ln x at x = 1 and use it to estimate ln1.12L(x) = ln1.12= �
1. 0 answers
2. 483 views
Letf (x) = tan^(-1)((7^(x))) f '(x) =
1. 0 answers
2. 330 views
Lety = tan^(-1)(sqrt(5x^(2)-1)) Find dy/dx
1. 0 answers
2. 400 views
8arcsin(x^(2)),find f '(x). Find f '(0.3).
1. 0 answers
2. 343 views
If f (x) = 6arctan(3e^(x)),find f '(x).
1. 1 answer
2. 367 views
If f (x) = 8arcsin(x^(2)),find f '(x). Find f'(0.3).
1. 1 answer
2. 350 views
Letf(x) = (7^(x))* (log base 3 of(x)) f '(x) =
1. 1 answer
2. 430 views
Letf(x)=((x^(6))*((x-8)^(2)))/((x2+4)^(7)) Use logarithmic differentiation to determine the derivative. f '(x) = f '(8) =
1. 2 answers
2. 696 views
If f (x) = 4sin(x)+3x^(x), find f'(2).
1. 1 answer
2. 380 views
The block is released from rest on the frictionless ramp. It compresses thespring by 20cm before momentarily coming to rest.
1. 0 answers
2. 477 views
The block is released from rest on the frictionless ramp. It compresses thespring by 20cm before momentarily coming to rest.
1. 0 answers
2. 446 views
A child's pogo stick stores energy in a spring with a force constant of 2.5×104N/m. At position A, the springcompression is a
1. 0 answers
2. 1,107 views
How high does the 35g ball go if the ball leaves the spring at the point shown in image? K=953 N/m and Xa=0 and Xb=0.120m(b)?
1. 1 answer
2. 961 views
Hydro Quebec charges clients by the kilowatt hour. Is this a unit of power,energy or force? If you consume 500kWh per month how
1. 1 answer
2. 378 views
I am having alot of difficulty with this problem,any help would be greatly appreciated.A baseball of mass 145 g leaves a
1. 1 answer
2. 772 views
A sample of unknown gas weighs 2.96 g and occupies 750. mL at 760. mmHg and 100.°C. What is the molar mass of the unknown gas?
1. 1 answer
2. 795 views
A 485 kg boxcar traveling at 23 m/s strikes a second car (initially at rest). The cars couple, and move off at 9 m/s. What is
1. 1 answer
2. 520 views
if i have 5.6 liters of gas in a piston ata pressure of 206 kPa and compress the gas until its volume is 4.8L, what will the new
1. 1 answer
2. 505 views
the pressure (p) that a 160-pound person's shoe exerts on the ground when walking varies inversely with area (a) of the sole of
1. 2 answers
2. 2,622 views
If f(x) is odd and the integral from -3 to 7 of f(x) dx is 11, then the integral from 3 to 7 of f(x) dx is __
1. 1 answer
2. 823 views
Suppose it takes 35 min for 4.0 g of sugar to completely react with another reagent added to the flask. What would the reaction
1. 1 answer
2. 684 views
A car company is offering car loans at simple interest rate of 14%. Find the interest charged to a customer who finances a car
1. 1 answer
2. 515 views
Maribel's city imposes a tax that is 40% of the state tax she pays. Her taxable income is $198.50 per week. Her state imposes
1. 1 answer
2. 580 views
a)Estimate how long it takes for the cold air to fall out when you open the door of your refrigerator. For simplicity, assume
1. 1 answer
2. 668 views
Determine the pressure when it expands to 10 liters, from a 5 liter ballon at 1 atm and 150k.
1. 1 answer
2. 491 views
if a circuit has a3.9k resistor and a5uf capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum
1. 1 answer
2. 616 views
Annual profit in thousands of dollars is given by the function, P(x) = -.01x2 + 50x + 30,000, where x is the number of items
1. 0 answers
2. 501 views
using 4 fives, with any signs( +, -, /, x, etc.) sum to 24.
1. 5 answers
2. 319 views
a Farmer want to put up a fence with a total perimeter of 250 ft. It is the shape of a rectangle but there is a river on one
1. 2 answers
2. 666 views
Four identical masses of 3.4 kg each are located at the corners of a square with 1.5 m sides. What is the net force on any one
1. 1 answer
2. 771 views
write the converse and contrapositive for the conditional statement below. decide whether each of the three statements is true
1. 4 answers
2. 1,964 views
write the converse and contrapositive for the conditional statement below. decide whether each of the three statements is true
1. 1 answer
2. 728 views
unscramble the country sdettaietnsu
1. 2 answers
2. 403 views
How many moles of negative ions are in 33.7 g of AlF3?
1. 1 answer
2. 447 views
With illustrations, show how the study of business economics helps a business manager in decision making?
1. 0 answers
2. 488 views
The force exerted by the wind on the sails of a sailboat is 340 N north. The water exerts a force of 150 N east. If the boat
1. 0 answers
2. 976 views

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