Shows three boxes connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The mass of the boxes are mA = 5 kg, mB = 2 kg, and mC = 3kg. When the system is released from rest, Calculate (a) the acceleration of the system ...
November 25, 2015
The following argument appeared in the draft of a bill before the Louisiana State Legislature in 2001: Whereas, the writings of Charles Darwin, the father of evolution, promoted the justification of racism, and his books On the Origin of Species and The Descent of Man ...
November 21, 2015
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. An industrial flywheel has a 1.7 m diameter and a mass of 270 kg . Its maximum angular ...
November 20, 2015
The following rational function describes blood concentration of a certain drug taken via IV over time, find a. the horizontal or oblique asymptotes b. the vertical asymptote c. describe their possible meanings f(x)= x+1/x
November 7, 2015
A fire hydrant that is 1.5 feet high casts a shadow that is 2.5 feet long. At the same time of day, a lamppost casts a shadow 15 feet long. What is the height of the lamppost?
November 3, 2015
Calc 3 Surface Area
Find the surface area of the indicated surface. 1.) The Portion of z=4y+ 3x^2, between y=2x, y=0 , and x=2 2.) The Portion of z= x^2 + y^2, below z=4 . 3.) The portion of z= sqrt(x^2 +y^2) between y=x^2 and y=4. 4.) The portion of 2x+y+z=8 in the first octant. Any help with ...
October 22, 2015
A professor records scores from a five-point quiz for each student in an introductory psychology class. If the data were presented in a frequency distribution graph, what type of graph should be used?
October 16, 2015
If 200 cm3 of tea at 95°C is poured into a 150-g glass cup initially at 25°C, what will be the common final temperature T of the tea and cup when equilibrium is reached, assuming no heat flows to the surroundings
October 13, 2015
Which of the following is not suggested to help a preschooler to separate from their family with less difficulty? A. Meet with a child a few hours before school begins. B. Use transition materials. C. Encourage families to visit. D. Show foster acceptance of the child. I ...
October 6, 2015
Im stuck on two problems and would really appreciate the help. 1. y varies jointly as a and b, and inversely as the square root of c. y=28 when a=2, b=7, and c=9. Find y when a=4, b=2, and c=4 2. y varies directly as x and inversely as the square of z. y=24 when x=27 and z=3. ...
October 2, 2015
Simple Harmonic Motion
A mass 1.2 kg of is attached to a spring and placed on a friction-less air track. Initially the mass is resting in equilibrium. A 10-gram bullet is fired into the mass to initiate oscillatory motion. The bullet hits the mass from the left side at a speed of 120 m/s at t=0 and ...
September 28, 2015
consider two solid cones made from a uniform material. The smaller cone is a ½ scale model of the bigger one. They are released from equal height, quickly reach their terminal velocities and fall in air until they hit the ground. Use scaling reasoning to predict which ...
September 24, 2015
A triangle is such that the largest angle is 12 times the smallest angle. The third angle is 20 less than the largest angle. Find the measure of each angle. (12-x)+ x+20-(12-x)=180. im having a difficult time setting up the equation
September 16, 2015
You are standing on a 50m cliff and throw a ball upwards at 8.2m/s - calculate the maximum height the ball will reach - calculate the time it will take the ball to return where it started - calculate the speed of the ball when it hits the ground. Please help
September 14, 2015
What is the factor of safety for a steel hanger having an ultimate strength of 70,000 Newton per cm2 and supporting a load of 89.6 kN.The hanger has a cross sectional area of 6.4 cm2.
September 2, 2015
The hook of a spring balance carries an object of mass 5kg And the balance is suspended vertically from the roof of a lift. Find the reading on the spring balance when the lift is going down with an acceleration of 0.1m/s^2? g=10m/s^2
August 17, 2015
Samantha owned 1,000 shares in Evita, Inc. an S corporation, that uses the calendar year. On October 11, 2010, Samantha sells all of her Evita stock. Her basis at the beginning of 2010 was $60,000. Her share of the corporate income for 2010 was $22,000, and she receives a ...
August 15, 2015
the formula for the area of a cylinder is derived by adding the area of a rectangle (circumference of a circle * height of the rectangle forming the circumference) by twice the area of a cycle, since there are two circles in a cylinder. I was asking why it is not 2 ...
August 15, 2015
The adjective clause in the following sentence modifies.... The time for complaints about the tax notices you have received has already passed. complaints, time or notices? I think it's complaints..
July 30, 2015
A reaction proceeds by the following three-step mechanism with elementary rate coefficients, k. A + B → C k 1 C → A + B k -1 C → B + D k 2 (C is a chemical radical) (ii) By applying the Steady State Approximation determine the overall order of the reaction. (...
July 30, 2015
English Grammar - Clauses
No, I'm not supposed to supply any implied words. I guess the fourth option is the one I should choose. How does this phrase not have subjects and verbs? Sorry if this is a silly question, Thank you for your help!
July 30, 2015
prob & stat
Consider the system of components connected as in the accompanying picture. Components 1 and 2 are connected in parallel, so that subsystem works if and only if either 1 or 2 works; since 3 and 4 are connected in series, that subsystem works if and only if both 3 and 4 work. ...
July 11, 2015
prob & stat
An academic department with five faculty membersAnderson, Box, Cox, Cramer, and Fishermust select two of its members to serve on a personnel review committee. Because the work will be time-consuming, no one is anxious to serve, so it is decided that the ...
July 10, 2015
Evaluate the difference, and write the result in t
(6- 1/2 I)-(3+ 9/2 I)
July 8, 2015
The next step is to construct side PS of the figure so that side PS is parallel and congruent to side QR. The chart below shows the steps each of the four students took to draw side PS: Student 1 Fix the compass at M and adjust its width to point L. Without changing the width ...
June 20, 2015
a final examination score in General maths is weighted four times as much as each test score If the student has a final exam score of 87% and test grades of 70% and 92%, then the mean score is
June 17, 2015
The Empire Carpet Company orders merchandise for $17,700, including $550 in shipping charges, from Mohawk Carpet Mills on May 4. Carpets valued at $1,390 will be returned because they are damaged. The terms of sale are 2/10, n30 ROG. The shipment arrives on May 26 and Empire ...
June 15, 2015
A pair of fair dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.) (a) the sum of the numbers shown uppermost is less than 6 (b) at least one 6 is cast
June 14, 2015
Your sister is considering purchasing a tablet computer that utilizes RT as the operating system. She asks you if RT is any different from her Windows 8 desktop she has at home. What do you tell her? A. Unlike her Windows 8 PC, RT does not have a tile-based interface. B. RT is...
June 12, 2015
A company manufactures x units of Product A and y units of Product B, on two machines, I and II. It has been determined that the company will realize a profit of $3/unit of Product A and a profit of $6/unit of Product B. To manufacture a unit of Product A requires 6 min on ...
June 3, 2015
A financier plans to invest up to $500,000 in two projects. Project A yields a return of 11% on the investment of x dollars, whereas Project B yields a return of 17% on the investment of y dollars. Because the investment in Project B is riskier than the investment in Project A...
June 3, 2015
Perform the indicated operations and simplify. 3z^2 - z - 2/6z^2 - 11z - 10 times 4z^2 - 25/2z^2 + 11z + 15 After I factored I got (3z + 2)(z - 1)/(3z + 2)(2z - 5) times (2z - 5)(2z + 5)/(2z - 5)(z + 3) After canceling I got (z - 1)(2z + 5)/(2z - 5)(z + 3). Where did I go wrong?
May 27, 2015
For the 6 faces and 8 vertices of a regular hexahedron, respectively sealed with red and blue these 2 beads (each face contains a bead and each vertex contains a bead), how many different types of solutions are there?
May 24, 2015
Suppose a manufacturer produces the football as shown below, they want to print one 2014 football World Cup logo and one Brazilian flag on it, note there are only two signs totally. These two signs are printed in two polygons. If we do not consider the position and direction ...
May 24, 2015
Extended Response 1. How are the cultures in South America like the cultures in Mexico? How are they different? 2. How might the cultures of Latin America be different if the Spanish and Portuguese had never arrived? What kind of culture do you think would dominate the region ...
May 14, 2015
Please check my answers??? 4. Trade and travel among the regions of South America have been affected by a. natural resources and vegetation b. high mountains and dense rain forests (I picked this) c. the Caribbean Sea and the Pacific Ocean d. Argentina and Venezuela's ...
May 14, 2015
1. MLA formatting requires which of the following? A. double spacing throughout, including the Works Cited page B. half-inch margins C. a title page D. paragraphs indented one inch 2. In MLA, parenthetical references _______. A. are optional and may be interchanged with ...
May 1, 2015
Small cubes with edge lengths of 1/4 inch will be packed into the right rectangular prism. How many small cubes are needed to completely fill the right rectangular prism? The height is 3 3/4 inches, the width is 5 inches, length is 4 1/2 inches. ( the small cubes will be 1/4 ...
April 30, 2015
The graph of a second-order polynomial is shown below, and the intercepts with the axes are marked. Explain how you can use the graph to write the polynomial as a product of linear factors (x-a)(x-b). Be sure to state the values of a and b.
April 29, 2015
The plane P1 has equation r = (2,1,1)+lambda(-2,1,8)+mu(1,-3,-9) The plane P2 has equation r = (2,0,1)+s(1,2,1)+t(1,1,1) Show that for points that lie on P1 and P2, lambda=mu I have no idea how to start... help! Thanks!
April 25, 2015
On a 3 day hike, Robert hiked twice as many miles on the first day as on the second day. On the third day he hiked 5 miles. Carlos hiked 5 miles on the first day and three times as many miles as on the second day as on the third day. (a) Write and simplify an expression for ...
April 22, 2015
On a three day hike, Robert hiked twice as many miles on the first day as on the second day. On the third day he hiked 5 miles. Carlos hiked 5 miles on the first day and three times as many miles on the second day as on the third day. (a) Write and simplify an expression for ...
April 22, 2015
Sharon wants to buy a bike helmet that costs $21. She already has $9 saved. She plans to sell lemonade to earn enough money to buy the bike helmet. For each cup of lemonade she sells, she makes a profit of $0.20. Explain how to determine how many cups of lemonade she must sell...
April 22, 2015
A two-tailed test is conducted at the 0.10 significance level. What is the P-value required to reject the null hypothesis? A. Greater than or equal to .010 B. Greater than or equal to 0.05 C. Less than or equal to 0.10 D. Less than or equal to 0.05 Is it C?
April 18, 2015