Questions Asked onJuly 16, 2020

1. Physics

A moving coil instrument has a resistance of 75 ohms and gives full scale deflection of 100 scale divisions for a current of 1mA. This instrument is connected in parallel with shunt resistance 25 ohms.The combination is then in series with load and a

2. English

Explain the transfer of authority symbolized by the transfer of keys between Helen, Kate, and Annie throughout the play. Write a paragraph of at least 125 words.

3. History

What was the Gothic Line? a) It was 10 miles of fortifications and blockades built by the Axis powers. b)It was the last line of defense before the Allied powers reached Berlin. c)It was the Nazis’ new territorial boundary separating France from Germany.

4. chemistry

A piece of Zinc was added to 100cm³ of 0.2M of hydrochloric acid. After effervescene had stopped. 30cm³ of the resulting solution required 22cm³ of 0.08M of Sodium trioxocarbonate (iv) for complete reaction, calculate the mass of Zinc added [Zn=65, H=1,

5. Physics

A brass rod is 20m long at a certain temperature. Find the length for a temperature rise of 100k, if the expansivity of the brass is 0.8x10-6k-1

6. Math

The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 1 4 1 5 2 6 3 7 1 8 1 9 1 10 4 The mean score on this test is: The median score on this test is:

7. Mathematics

Two boat leave a port at the sametime.The first travel at 15km/hr on a bearing of 135° while the second travel at 20km/hr on a bearing 063°.If after 2hours,the second boat is directly north of the first boat calculate their distance apart.(Answer 41.9).

8. Math

Which of the following could be the last 2 digits of an integer that is a perfect square? What is your reasoning? 12 23 56 87 99

9. Mathematics

let #N mean the number of days in year N. What is the value of #1988 +#1989 + #1990 + #1991? A.1460 B.1461 C.1462 D.1463

10. Mathematics

Differentiate ( 4x+2)_3 with respect to x .hence,find the value of dy/ DX when x=1

11. math

If the graph of the quadratic function f(x) = x^2 + dx + 3d has its vertex on the x-axis, what are the possible values of d? What if f(x) = x^2 + 3dx − d^2 + 1?

12. Mathematics

When x is added to a number which is four times as big as the result is 30. What is the value of x

13. algebra

An equation, f, has a domain of all whole numbers and has a range of all real numbers. Does the equation represent a function? Explain why or why not.

14. Mathematics

The perimeter of the rectangle below is 42 units. Find the value of y. Rectangle side 1: 3y-3 Side 2: 2y-1

15. calculus

Let R be the region in the xy-plane which lies below the curve y = 𝑥^3, above the x-axis and for which 0 ≤ x ≤2. Compute the integral ∫∫R(𝑥+𝑦)𝑑A a. integrating y first then x. b. integrating x first then y.

16. Mathematics

2,9, 20 1. Determine what kind of growth this is and explain how you know? 2. Explain how you can go about finding an expression for the number of small squares in the nth term. 3. What is the expression for the term of this sequence?

17. Physics

A 0.40-m length of wire moves at a constant speed of 8 m/s in at 1400 with a 0.4-T B-Field. What is the magnitude and direction of the induced emf in the wire?

18. physics

an ac generator has 20 turns of wire of area 0.16 m2. The loop rotates in a magnetic field of 0.52 T at a frequency of 80 Hz. Find the maximum induced emf.

19. Physics

A series-wound dc motor has an internal resistance of 6 W. The 120-V supply line draws 8 A when at full speed. What is the emf in the motor and the starting current?

20. math

Out of a pool of 234 people with lottery tickets,120 of them are women, and out of those 120, 65 are older than 23 and out of those 65,12 are married. What is the probability that the lottery winner will be a married woman older than 23? a) 2/39 b) 23/234

21. Math

2,9, 20 1. Determine what kind of growth this is and explain how you know? 2. Explain how you can go about finding an expression for the number of small squares in the nth term. 3. What is the expression for the term of this sequence? *I didn't understand

22. Math

In a math class, each student who does not turn in a homework assignment receives a 0 for that assignment. Of the 10 students in the math class, what is the maximum possible number who did not turn in Homework assignment #1? We are given that one student's

23. Mathematics

between 3 p.m. and 3:30 P.M., the minute hand of a clock moves 180. How many degrees does the hour hand move during that same period of time

24. chemistry

In a thermonuclear device, the pressure of 0.050 liters of gas within the bomb casing reaches 4.0 x 106 atm. When the bomb casing is destroyed by the explosion, the gas is released into the atmosphere where it reaches a pressure of 1.00 atm. What is the

25. Mathematics

Jack and Jill went to burger queen. Jack bought 2 hamburgers and 3 milkshakes for \$4.21 while Jill bought 3 hamburgers and 2 milkshakes for \$5.24. The cost of 1 hamburger and 1 shake is a. \$1.03 b. \$1.54 c. \$1.89 d. \$9.45

26. math

(1,2), (2,9),(3,20)..... a) Determine what kind of growth this is and explain how you know. b) Explain how you can go about finding an expression for the number of small squares in the nth term. c)What is the expression for the term of this sequence 4)Test

27. math

explain why we are able to find a line given two points

28. math

Link to the diagram - webactivities.files.wordpress.com/2010/09/figb1.jpg a) Determine what kind of growth this is and explain how you know. b) Explain how you can go about finding an expression for the number of small squares in the nth term. c)What is

29. English

The first Americanized short version of this word, deli, came into existence ca. 1954. ============================================ How do you read "ca."? It is short for "circa" according to a dictionary. And 'circa' means 'about'.

30. Science

Hi, I needed help finding out when and why Science thought the sun revolved around the earth and that the sun did not rotate on its own axis. Also when did Science end up discovering this was false?

31. calculus

Use the method of Lagrange multipliers to find the largest and the smallest values of f(x,y) = 𝑥^2+ 𝑦^2 for points on the curve 3𝑥^4+ 2𝑥𝑦+𝑦^4 = 5 .

32. English

Identify the figures of speech in the sentences S/N Expression Figure of Speech 1. You are a living dead person if you have not read Jane Austen’s Pride and Prejudice! Answer: 2. They usually have green thoughts and green with envy each time. Answer: 3.

33. algebra

a large box of chocolates cost \$3 more than a small box. a customer buys three small boxes and four large boxes and pays \$64.50. find the cost of each sized box. I'm completely stumped, been trying to figure it out for an hour and my parents can't even

34. Math

The cable of a suspension bridge has supporting towers which are 50 ft high and 400 ft apart and is in the shape of a parabola.If the lowest point of the cable is 10 ft above the floor of the bridge, find the length of a supporting rod 100 ft from the

35. Algebra

1. Divide the following numbers using scientific notation: (4 x 102)/(1 x 103) 2. Multiply the following numbers using scientific notation: (2 x 103)(2 x 104). 3. Perform the following calculation: (1 x 102)(2 x 103)/(1 x 102)

36. Math

A solid sphere of radius 4cm has a mass of 64kg.what will be the mass of a shell of the same metal whose internal and external radii are 2cm and 3cm respectively?Show working