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Questions (651)

A ball is hit straight up initially with the felocity of47 ft per second The height(h) of the softball in ft above ground
1. 1 answer
2. 467 views
What is the acceleration of a proton moving with a speed of 4.3 m/s at right angles to a magnetic field of 2.1 T?
1. 0 answers
2. 367 views
144 squared is rational right?
1. 1 answer
2. 390 views
Estimate to the nearest integer.Square root of 40.
1. 1 answer
2. 453 views
We can treat the equilibrium constant as the ratio of the forward rate constant, kfwd, with respect tothe reverse rate constant,
1. 0 answers
2. 468 views
Initially, there are 33 moles of A and 0 moles of B. How many moles of A and B will be present after the system reaches
1. 4 answers
2. 783 views
The Kb for butylamine is 5.9x10^-4. What is the Ka for its corresponding conjugate acid, butylammonium?I really need help with
1. 1 answer
2. 474 views
I missed one day of class and now i cannot figure this out... I thought that price and YTM relied on each other and now I have a
1. 0 answers
2. 511 views
Suppose you took 1000 random samples of size 200 from the Poisson distributionwith u = 5 and computed a 90% confidence interval
1. 0 answers
2. 522 views
A research manager at Coca-Cola claims that the true proportion, p, of cola drinkers that preferCoca-Cola over Pepsi is greater
1. 1 answer
2. 965 views
A firm has forecasted sales of $3,000 in April, $4,500 in May and $6,500 in June. All sales are on credit. 30% is collected the
1. 1 answer
2. 1,871 views
A computer supply house receives a large shipment of blank CDs each week. Past experience has shown that the number of flaws per
1. 0 answers
2. 679 views
Suppose that the proportion of students who used the Internet as their major resource for school in the past was 66%. A sample
1. 0 answers
2. 944 views
Suppose that the proportion of students who used the Internet as their major resource for school in the past was 66%. A sample
1. 0 answers
2. 553 views
A charge of .250 C moves vertically in a field of .500 T that is oriented some angle from the vertical. If the charges's speed
1. 2 answers
2. 501 views
A charge of .250 C moves vertically in a field of .500 T that is oriented some angle from the vertical. If the charges's speed
1. 1 answer
2. 375 views
Suppose a basketball player successfully makes 70% of the free throw shots they attempt. Let Xrepresent the number of successful
1. 1 answer
2. 951 views
It is known that an exam scores of students in STAT 2507 follow a normal distribution with a meanof 70% and a standard deviation
1. 1 answer
2. 1,122 views
Suppose a basketball player successfully makes 70% of the free throw shots they attempt. Let Xrepresent the number of successful
1. 0 answers
2. 910 views
A guy buys a car for $29,000 and finances it with a four year, 7% APR with monthly payments and compounding. How much of his
1. 1 answer
2. 453 views
A guy buys a car for $29,000 and finances it with a four year, 7% APR with monthly payments and compounding. How much of his
1. 0 answers
2. 433 views
Suppose that R is the set of real numbers. Let f: R--> R be defined by f(x)= mx+b, where m and b are real numbers and m is
1. 1 answer
2. 961 views
Suppose that R is the set of real numbers. Let f: R--> R be defined by f(x)= mx+b, where m and b are real numbers and m is
1. 0 answers
2. 642 views
Suppose that R is the set of real numbers. Let f: R--> R be defined by f(x)= mx+b, where m and b are real numbers and m is
1. 0 answers
2. 548 views
Need help on how to actually do the rise/run and equations to figure out the anxwer to "What do you call a duck that steals?"
1. 11 answers
2. 515 views
What is the emf of a battery with a 0.15 Ω internal resistance if the battery delivers 1.5 A to an externally connected 5.0 Ω
1. 0 answers
2. 661 views
The point (-4.3) lies on a circle whose center is at (2,1). Find an equation of this circle.
1. 3 answers
2. 713 views
Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning.
1. 4 answers
2. 2,199 views
Graph the parabolax^2+8x-5y+21=0
1. 5 answers
2. 434 views
Solve.(7+u)(3u-1)=0 (If there is more than one solution, separate them with commas.)
1. 4 answers
2. 3,395 views
Thanks for your help; I am still have a few problems, could you check my work:Given: Volume of vinegar analyzed-5mL Con'c of
1. 0 answers
2. 1,077 views
Hi, could someone help me with these calculations for my lab;Given: Volume of vinegar analyzed:5 mL Con'c of NaOH: 0.09890M Avg.
1. 1 answer
2. 763 views
Please help with this question:B) Combustion analysis of a 22.0-mg sample of the painkiller morphine produced 13.2 mg of water.
1. 0 answers
2. 669 views
Could someone help me with these problems;A)If 5.97mL of a solution of NaCl contains 2.54g of sodium ion, what is the molarity
1. 1 answer
2. 3,289 views
How do you contract aids
1. 2 answers
2. 939 views
I need a graph for y = 3 - 4cos pi/5(x - 1)
1. 3 answers
2. 389 views
What is the whole point of using solvent pairs for recrystallization(say a mix of ethanol and water) rather than just using one
1. 1 answer
2. 625 views
5. What are the dimensions of the lightest open-top right circular cylindrical can that will hold a volume of .8L?
1. 1 answer
2. 898 views
I just need help with changing the order of integration. I can do the actually integral by myself. Thank you :)int f(x,y) dydx
1. 4 answers
2. 597 views
Functions of the same famil have the same... (?) Can someone help with the answer??
1. 2 answers
2. 349 views
How many moles are in 1.64 g hclo
1. 1 answer
2. 419 views
An electrochemical cell is created using gold and magnesium half-cells.a. Determine which half-cell will undergo oxidation and
1. 3 answers
2. 918 views
A barbell is mounted on a nearly frictionless axle through its center. The low-mass rod has a length d = 0.27 m, and each ball
1. 1 answer
2. 2,765 views
the integral 49dx/x^2(x^2+36)^(1/2)
1. 0 answers
2. 278 views
Evaluate the integral:the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this
1. 0 answers
2. 1,022 views
Evaluate the integral:the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this
1. 0 answers
2. 462 views
First make a substitution and then use integration by parts to evaluate.The integral of (x^9)(cos(x^5))dx What do you substitute
1. 1 answer
2. 937 views
The limit from x--> infinity of x^(3/x)i keep getting 3/infinity, which is infinity and this answer is incorrect.
1. 1 answer
2. 421 views
EvaluateThe integral from 0 to 5 of (t)(e^-t)dt. I got -5e^-5+-e^-5, but this is incorrect.
1. 1 answer
2. 347 views
First make a substitution and then use integration by parts to evaluate.The integral of (x^9)(cos(x^5))dx What do you substitute
1. 0 answers
2. 622 views
Evaluate.The integral of (e^5x)(sin6x)dx
1. 3 answers
2. 560 views
What is the Mechanical energy of a 500-kg roller-coaster car moving with a speed of 3 m/s at the top of a hill that is 30 m
1. 0 answers
2. 744 views
A boulder with a mass of 2,500 kg on a ledge 200 m above the ground falls. If the boulder's mechanical energy is conserved, what
1. 4 answers
2. 1,772 views
Find f'(7) for f(x)=6x^ln(x)
1. 1 answer
2. 713 views
Find the f'(3) of F(x)=9(sin(x))^x
1. 1 answer
2. 385 views
Find the solutions of the exponential equatione^(2x)-5e^(x)+6=0
1. 1 answer
2. 413 views
Find the solution of the logarithmic equation:ln(x+8)+ln(x–8)=0 Im not sure how to approach this one. I tried moving the
1. 1 answer
2. 447 views
Two runners approaching each other on a straight track have constant speeds as shown, while they are 100m apart. How long will
1. 1 answer
2. 821 views
If a man weighs 853.0 N on Earth, what would he weigh on Jupiter where the acceleration due to gravity is 25.4 m/s2?
1. 3 answers
2. 692 views
why is it important to spot samples directly on the marks made on the TLC plate?This is for Thin Layer Chromotography. Is this
1. 2 answers
2. 506 views
A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial
1. 0 answers
2. 717 views
A fighter pilot dives his plane toward the ground at 345 m/s. He pulls out of the dive on a vertical circle. What is the minimum
1. 5 answers
2. 951 views
A skier goes down a slope inclined at 25 degrees. Her mass including equipment is 60.0kg.a. What is her acceleration if friction
1. 2 answers
2. 2,121 views
A crate has a mass 24 kg. What applied force is required to produce an acceleration of 3m/s^2 if the frictional force is 90 N.
1. 2 answers
2. 2,019 views
Find the equation of the normal to the curve y=2x^2+3x+4 which is perpendicular to the line y=7x-5
1. 0 answers
2. 506 views
The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please...
1. 0 answers
2. 605 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=x^2, x=y^2,
1. 1 answer
2. 391 views
The decomposition of HI(g) is represented by the equation:2HI(g) <-> H2(g) + I2(g) Kc= 64 at 25°C. If the equilibrium
1. 2 answers
2. 1,160 views
Shown below is the chemical equation for the thermal decomposition of calcium carbonate.CaCO3(s) <-> CaO(s) + CO2(g) H°rxn =
1. 1 answer
2. 924 views
Classify each as a lewis acid or lewis base...A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3 Lewis acids are electron pair acceptors. Lewis
1. 1 answer
2. 2,134 views
Classify each as a lewis acid or lewis base...A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3
1. 3 answers
2. 1,742 views
use the midpoint rule to approximate the integral from -7 to 1 of (10x-5x^2)dx
1. 0 answers
2. 438 views
The integral from 1 to 5 of 1/x^2*(times) the square root of 1+(1/x)dx. i've had tried this problem over and over again and
1. 0 answers
2. 310 views
Caluculating Mass! You push yourself on a skateboard with a force of 30 N and accelerate at 0.5m/s 2. Find the mass of the
1. 7 answers
2. 3,105 views
Find the values of N for which the solution of the equations 3x+2y=Nx and 15x+4y=Nx is not unique
1. 0 answers
2. 384 views
integral of 2sin^3xcosx dxthat is a sin cubed x. i think i use u-substituion, but im not quite sure how to do it. please help
1. 1 answer
2. 550 views
How to write a polynomial function with the integral coefficients that have the following roots:#1.) 0, -1/2, 6 #2.) + or - 5i
1. 2 answers
2. 550 views
Yu learn that for every 1,000 meters you rise in the atmosphere, the temperature drops by 6 degrees C. You have the idea that if
1. 3 answers
2. 632 views
Can someone answer in depth the difference between a soap and a detergent using chemist terms please :)
1. 1 answer
2. 480 views
Distinguish between a project-wide evaluation plan and an objective-oriented evaluation plan. What are the pros and cons of each
1. 1 answer
2. 704 views
A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=9–x2. What are the dimensions of
1. 1 answer
2. 640 views
Use Newton's method to approximate a root of the equation x3+x+3=0 as follows.Let x1=–1 be the initial approximation. The
1. 3 answers
2. 5,962 views
A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=9–x2. What are the dimensions of
1. 1 answer
2. 977 views
If 1700 square centimeters of material is available to make a box with a square base and an open top, find the largest possible
1. 0 answers
2. 912 views
A rancher wants to fence in an area of 1500000 square feet in a rectangular field and then divide it in half with a fence down
1. 4 answers
2. 1,760 views
How are the forward and reverse rate constants for a one-step reaction related to the equilibrium constant for the reaction?A)Kc
1. 0 answers
2. 468 views
Which of the following will be affected by the addition of a catalyst to a chemical reaction? Choose all that apply. thanksA)the
1. 0 answers
2. 675 views
A 55 kg engineer leaves her office on the 33rd floor of a skyscraper and takes an elevator to the 59th floor. Later she descends
1. 2 answers
2. 2,121 views
Estimate the rotational kinetic energy of Earth, assuming it to be a solid sphere of uniform density.
1. 2 answers
2. 924 views
A space shuttle is in a circular orbit at a height of 250km, where the acceleration of Earth’s gravity is 93% of its surface
1. 2 answers
2. 1,124 views
A surfing physicist paddles out beyond the breaking surf to a deep-water region where the ocean waves are sinusoidal (can obey a
1. 1 answer
2. 1,468 views
A popular daredevil trick is to complete a vertical loop on a motorcycle. This trick is dangerous, however, because if the
1. 1 answer
2. 2,265 views
The blade in a food processor spins at 1700 rpm. After the machine is turned off, the blade comes to a stop in 3.7s. How many
1. 1 answer
2. 657 views
A truck of mass 9M is moving at a speed v = 15 km/h when it collides head on with a parked car of mass M. Spring mounted bumpers
1. 0 answers
2. 977 views
An airline passenger pulls a wheeled suitcase, exerting a force of 60N, at a 35º angle with the horizontal. How much work does
1. 1 answer
2. 691 views
A board of mass m and length L is leaning against a wall. The wall is frictionless, and the coefficient of static friction
1. 0 answers
2. 735 views
Tarzan stands on a branch, petrified with fear as a leopard approaches. Fortunately, Jane is on a branch of the same height in a
1. 2 answers
2. 1,562 views
Can someone please help me?In 1861, Louis Pasteur observed that when yeasts grow in a sugar and protein medium, completely free
1. 2 answers
2. 1,447 views
If you multiply me by 2, I become a number greater than 20 and less than 40. If you multiply me by 6, I end in 8Multiply me by
1. 6 answers
2. 828 views
A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling and has an elastic
1. 2 answers
2. 926 views

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