Me and I

Popular questions and responses by Me and I
1. Physics

Am I correct? Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 5.0 kg, and the other has total mass of 3.0 kg. If the 3.0 kg cart is moving at 3.0 m/s after the spring is

2. Algebra II

Help me with this question please There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7

3. Physics

How much heat is required to completely boil away 0.200 kg of water (Hv = 2.26 × 10^3 kJ/kg)? (Points : 1) 4.52 × 102 kJ 2.26 × 103 kJ 4.52 × 103 kJ 1.13 × 104 kJ

4. Physics

Okay last question I need help with Monochromatic light of 605 nm falls on a single slit, which is located 85 cm from a screen. The first dark band appears at 5.4 mm from the center. How wide is the slit? 0.001 mm 0.050 mm 0.095 mm 1.50 mm

5. Algebra ll

Help please, I don't understand how to do this... Give an example of an arithmetic sequence that is found in the real world. Find the common difference and write a recursive and iterative rule for the sequence. Use one of the rules to find another term of

6. Physics

What is the equivalent resistance of a parallel circuit with a 5.0 kΩ resistor, a 2.5 kΩ resistor, and 10.0 kΩ resistor? A. 0.10 kΩ b. 0.83 kΩ c. 10 kΩ d. 1.4 kΩ e. 18 kΩ

7. Physics

Help me please I'm stuck on this question 2.In a thunderstorm at 20.0°C, Karen sees a bolt of lightning and hears the thunderclap 3.00 s later. How far from Karen did the lightning strike? Show your work.

8. Physics

Which of the following is an appropriate measure of electric power on a toaster label? A. 110 V B. 2.0 A C. 220 W D. 55 Ω

9. Physics

Help me with this please When a 20 V battery is hooked up to a 10 Ω resistor in a circuit, how much current flows through the circuit? 0.5 A 2 A 20 A 200 A

10. Physics

How would i solve this? A 10.0 kg ball falling at 10.0 m/!@#\$%^&s a pile of feathers and comes to a complete stop in 10 s. What force does the pile of feathers exert to stop the ball? 10 N 20 N 100 N 200 N

11. Physics

Am i correct? If a 10.0 kW device pulls 20.0 A of current, what voltage exists across it? A. 5.0 *10^0 V B. 5.0 *10^1 V C. 5.0 *10^2 V D. 5.0 *10^3 V

12. Physics

One 10.0 Ω resistor is wired in series with 10.0 Ω resistors in parallel. A 45.0 V battery supplies power to the circuit. What is the total current through the circuit? A. 3.0 A B. 1.5 A C. 0.75 A D. 0.33 A

13. Physics

A singer moves a note up one octave. How has the sound changed? The amplitude has decreased The wavelength has increased The speed has increased The frequency has increased

14. Algebra ll

Consider the function f(x) = x4 – 3x3 – 7x2 + 15x + 18. Use synthetic division to divide f(x) by x – 3. Use the answer to explain whether or not x – 3 is a factor of f(x).Factor f(x) completely.

15. Physics

am i correct? An electric oven has a resistance of 10.0Ω and a voltage of 220 V. How much current does it draw? A. 2.2 A B. 22 A

16. Physics

Help please A 200.0 g copper block absorbs 2.34 × 10^3 J of heat to raise its temperature by 30.0 K. What is the specific heat of copper?

17. Physics, am i right?

A 10.0 Ω resistor is in parallel with a 20.0 Ω resistor and supplied by a 9.0 V battery. What is the current passing through the 20.0 Ω resistor? (Points : 1) 0.45 A 0.90 A 1.35 A

18. Physics

Last question i'm stuck on please help me through this. Five waves pass a dock in 2.0 s. If the waves are traveling at 10.0 m/s, then what is the wavelength of the waves?

19. Physics

A forklift exerts an upward force of 2.00*10^3 N on a box as it moves the box 5.00 m higher. How much work does the forklift do? 500 J 1.00*10^3 J 1.00*10^4 J

20. Physics

A 15.0 kΩ resistor is hooked up to a 45.0 V battery in a circuit with a switch. a.) What is the current flowing through the resistor? b.) What is the power dissipated by the resistor?

21. Algebra ll

Consider the system below. {4x-2y=-12} {3x-y=-3} Solve the system by using a matrix equation.

22. Algebra II

Am i correct? A plane intersects only one nappe of a double-napped cone. It is neither perpendicular to the cone's axis nor parallel to its generating line. Which conic section is formed? point circle ellipse

23. Physics

A 10.0 Ω resistor is hooked up in series with an 8.0 Ω resistor followed by a 27.0 Ω resistor. The circuit is powered by a 9.0 V battery -Calculate the equivalent resistance. -Calculate the voltage drop across each resistor in the circuit.

24. Algebra ll

Help me please The table shows the distance and costs of flights for a given airline with the same starting destination and different ending destinations. Distance (miles) 1281 2796 790 150 3211 7810 812 210 7742 3578 1346 3214 Cost (dollars) 473 683 508

25. Algebra II

Help me with this, please... A ball is dropped vertically from a height of 80 meters. After each bounce, the ball reaches a maximum height equal to 60 percent of maximum height of the previous bounce. a. Write the first three terms of the sequence. Explain

26. Physics

Help me with this question, please How will the total voltage of a string of light bulbs in series change as you add more bulbs to the string? A. The total voltage will decrease B. The total voltage will stay the same C. The total voltage will increase d.

27. Algebra II

Please help me out with this The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is randomly

28. Physics

Am i Correct? 2.0 cm*.044T*/.10 s= 0.88 V Each side of a square loop of wire measures 2.0 cm. A magnetic field of 0.044 T perpendicular to the loop changes to zero in 0.10 s. What average emf is induced in the coil during this change? A. 1.8 V B. 0.088 V

29. Physics

Am i correct? Which of the following is a reasonable power rating on an electric oven? 220 V 8.0 A

30. Physics

Help me understand this please You have a 2.00 kg block of lead. Lead melts at 327.5°C. CPb = 130.0 , and Hf for lead is 2.04 × 10^4 J/kg. Say you start at room temperature (25.0°C). How much heat must you transfer to melt all the lead?

31. Physics

I'm not really sure on this one... Am i correct? A maglev train requires which of the following? A. track and the train must have the different magnetic poles B. track and the train must have the same magnetic poles

32. Physics

Help please A wire carries a current of 5.2 A from east to west through a 6.0 m section of wire in the earth's magnetic field of 1 × 10^-5 T at a location where the magnetic field points south. What is the magnitude of the magnetic force acting on the

33. Physics

Am I correct? Which statement explains why a bicycle is stable when a rider pedals quickly? (Points : 1) The angular momentum vector resists directional change.

34. Physics

I don't understand this question... What is the change in entropy for a system that has 250 J of heat added to it at 25°C? (Points : 1) 10 J/K 0.84 J/K 0.84 J/K 10 J/K

35. Physics

Guide me through this plz. A single 1,300 kg cargo train car is rolling along a train track at 2.0 m/s when 400 kg of coal is dropped vertically into it. What is its velocity right afterward? Assume a closed system. (Points : 1) 1.5 m/s 2.0 m/s 6.5 m/s

36. Physics

An object is 30.0 cm to the left of a convex lens with a focal length of +8.0 cm. Calculate the distance from the lens. Would it be upright or inverted?

37. Physics

Help please How do the dark lines of an atom's absorption spectrum relate to the bright lines of its emission spectrum? A. The bright lines are at the same energies as the dark lines. B. The dark lines are at higher energies than the bright lines. C. The

38. Physics

Help me with this please A 10.0 Ω resistor is in parallel with a 20.0 Ω resistor and supplied by a 9.00 V battery. What is the total current passing through the circuit? A. 0.38 A B. 0.75 A C. 1.35 A D. 6.00 A

39. Algebra ll

Help me with this please There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10

40. Algebra ll

Bernardo divided one polynomial by another, as shown below. (9x2-9x-10)/(3x+2) What is the quotient? A. 3x-1 + -8/3x+2 B. 3x-1 + -12/3x+2 C. 3x+5 D. 3x-5

41. Algebra II

help please There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections.

42. Physics

am i correct? A stream of moving charges results in a current of 5.6 A. How long does 116 C of charge take to flow past a fixed point? 2.0 s 5.6 s 11.2 s 21 s

43. Physics

Please help me go through this F = q1q2/r^2, i know this is the equation, but i don't know how to get the answer, please help. What is the electric force between a +2 µC point charge and a –2 µC point charge if they are separated by a distance of 5.0

44. Algebra ll

How would i do this? Use the binomial theorem to expand (2x – 5y)^3

45. Physics

Help needed Which of the following is equivalent to one ampere? 10 s/10 C 10 C/10 m 1.5 C/1.5 s 15 C/10 s

46. Physics

with this one i'm confused i'm not sure if it's b or d The current in a solenoid is changed from 1.1 A to 4.4 A. By what factor does the magnitude of the magnetic field inside the solenoid increase? 2 4 0.5 0.25 1.1/4.4= 0.25 0r 4.4/1.1= 4

47. Physics

Help me with this please A 6.0 m section of wire carries a current of 5.2 A from east to west in the earth's magnetic field of 1.0 × 10^-5 T at a location where the magnetic field points south. In which direction does the magnetic force act on the wire?

48. American History

What was the role of the northwest ordinance and what was its effect on the banning of slavery?

49. Physics

I need help with my lab, it's telling me to measure the mass of cup 1, but i don't understand how to measure it... I have a digital scale does that measure mass? or is there a certain equation to measure it?

50. Algebra ll

Help please The center of a circle is at (-5 , 1) and it has a radius of 9. What is the equation of the circle? A.(x-5)^2+(y+1)^2= 81 B.(x-5)^2+(y+1)^2= 3 C.(x+5)^2+(y-1)^2= 81 D.(x+5)^2+(y-1)^2= 3

51. Physics

How would i solve this? (30)(Cm)Δ+(335.5)(4.18)Δ(21)=0

52. Physics

Am i correct? My work 0.10/0.20= .5 = 1/2 or is it the other way around? .20/.10? Suppose a magnetic field of 0.20 T is applied to the area within a circular loop of wire. The strength of the field is then changed to 0.10 T. By what factor is the magnetic

53. Algebra ll

what is AB? A= 3 , 5 B = 4 2 , 8 -7 this is a matrix, but it wont let me put in the brackets

54. Physics

(30)(Cm)Δ+(335.5)(4.18)Δ(21)=0 I need to find the specific heat of the masses, but i don't know how to, i'm currently doing a lab and these are the mass and temp. numbers that i plugged in...

55. Algebra II

Can anyone please teach me how to divide polynomials using long division? It's quite confusing. Like give me a problem to solve and guide me through it.

56. Algebra II

It has a graph but i cant paste it on here, could you guide me through plz Which is a root of f(x) = 0 with a multiplicity of 2? -4 -3 3 4

57. Physics

I'm confused with this one, here's what i got 45.0 v/ 40.0Ω = 1.125 A is the answer b? A 10.0 Ω resistor is in parallel with a 30.0 Ω resistor and supplied by a 45.0 V battery. What is the total current drawn from the battery? 0.003 A 1.10 A 6.00 A 338

58. Algebra II

am i correct? 1(2x)^3 + 3(2x)^2*(-5y)^1 + 3(2x)^1*(-5y)^2 + 1(-5y)^3 answer (2x-5y)^3

1. Algebra ll

I appreciate the help thank you, Damon

posted on June 13, 2014
2. Algebra ll

thank you, Steve :)

posted on June 13, 2014
3. Physics

i'm thinking it's c?

posted on June 13, 2014
4. Physics

oh okay, thanks Damon :)

posted on June 13, 2014
5. Physics

thank you

posted on June 13, 2014
6. Algebra ll

nvm, i think i figured this one out :)

posted on June 13, 2014
7. Physics

nvm i got this one

posted on June 10, 2014
8. Physics

okay great, thx

posted on June 10, 2014
9. Physics

okay :)

posted on June 10, 2014
10. Algebra II

thank you, Steve :)

posted on June 10, 2014
11. Physics

nvm i got this one, i think 5.2*6.0*.0001 .000312= 3.1*10^-4 N so is this A?

posted on June 9, 2014
12. Algebra ll

thank you, Damon :)

posted on June 6, 2014
13. Algebra ll

so this is c?

posted on June 6, 2014
14. Physics

thx, you helped me out a lot :)

posted on June 4, 2014
15. Physics

thank you, Damon :)

posted on June 3, 2014
16. Physics

i mean its, C :) 10,000/ 20 A = 500

posted on June 3, 2014
17. Physics

10x10^3 W 10,000/ 2A = 5000 which would be D right?

posted on June 3, 2014
18. Physics

thx, MathMate and Damon :)

posted on June 3, 2014
19. Physics

ohh oops, i did 15/45, thank you, Damon

posted on June 3, 2014
20. Physics

thx, i did not know that, so the answer is D :)

posted on June 3, 2014
21. Physics

thank you :)

posted on June 3, 2014
22. Physics

20/3= 6.666 9/6.666 c?

posted on June 3, 2014
23. Physics

thanks :)

posted on June 3, 2014
24. math

4= x - 4 +4 +4 8= x

posted on June 3, 2014
25. Physics

okay, thx for the help :)

posted on June 3, 2014
26. Algebra ll

nvm i got this one

posted on June 1, 2014
27. Algebra ll

and b = 4 -7

posted on June 1, 2014
28. Algebra ll

a= 3, 5 2, 8

posted on June 1, 2014
29. Physics, am i right?

thank you, i actually understood how to do this from your last post on my other question.

posted on May 27, 2014
30. Physics

okay, thx, i take online school and it's much harder for me

posted on May 27, 2014
31. Physics

ok, thanks :)

posted on May 27, 2014
32. Physics

wouldn't it be b?

posted on May 27, 2014
33. Physics

nvm got this one

posted on May 23, 2014
34. Physics

okay great, thank you :)

posted on May 23, 2014
35. Physics

thank you

posted on May 23, 2014
36. Physics

ty so much :)

posted on May 15, 2014
37. Physics

(9x 10^9)/(.05m)^2, is this what i should be calculating?

posted on May 15, 2014
38. Algebra ll

oh nvm srry posted wrong one i already found out how to do this one

posted on April 24, 2014
39. Algebra II

posted on April 23, 2014
40. Algebra II

Ok,thank you guys! :)

posted on April 23, 2014
41. Algebra II

ok thank you so much for showing me how to solve this!!! :)

posted on April 23, 2014
42. Physics

ok, thank you for explaining

posted on April 14, 2014