# KEV

Most popular questions and responses by KEV
1. ## physics

An 76 kg construction worker sits down 2.0 m from the end of a 1440 kg steel beam to eat his lunch. The cable supporting the beam is rated at 15,000 N. Should the worker be worried? Determine the tension in the cable. i.imgur. com/Qfhkd. gif I can't figure

asked on October 21, 2012
2. ## physics

The figure below shows the circular wave fronts emitted by two sources. Make a table with rows labeled P, Q, and R and columns labeled r1, r2, Δr, and C/D. Fill in the table for points P, Q and R, giving distances as multiples of λ and indicating, with a

asked on December 9, 2012
3. ## English

whats figurative language? Check this site for a great explanation and examples. http://volweb.utk.edu/school/bedford/harrisms/1poe.htm Thank you for using the Jiskha Homework Help Forum. If you are seeking a definition for "figurative language" it is used

asked on April 13, 2007
4. ## Physics

An object in space is initially stationary relative to the Earth. Then, a force begins acting on the object, starting with a force of 0 N, and increasing at a uniform rate until the magnitude of the force is 56 N after the force has acted for 10 s. The

asked on January 30, 2015
5. ## Physics

A 64.3 kg astronaut is on a space walk when the tether line to the shuttle breaks. The astronaut is able to throw a 10.0 kg oxygen tank in a direction away from the shuttle with a speed of 11.9 m/s, propelling the astronaut back to the shuttle. Assuming

asked on January 26, 2015
6. ## Chemistry

the pH of 10.00 mL of 0.100 M HCl after adding 10.00 mL of indicator solution

asked on June 12, 2011
7. ## physics

Which consumes more energy, a 1.5 kW hair dryer used for 10 min or a 10 W night light left on for 19 hr?

asked on November 25, 2012
8. ## math

The volume of a rectangular prism is 2x^3+5x^2+x-2. The height of the prism is 2x-1, and the length of the prism is x+2. Find the width of the prism.

asked on March 10, 2010
9. ## physics

A 4.55 kg object is released from rest while fully submerged in a liquid. The liquid displaced by the submerged object has a mass of 3.20 kg. How far and in what direction does the object move in 0.200 s, assuming that it moves freely and that the drag

asked on December 1, 2012
10. ## physics

The forces in the figure below are acting on a 2.1 kg object. Find the values of ax and ay, the x and y components of the acceleration. i.imgur. com/nNz9m. png this is one of the last problems on my homework that i just do not understand.. can someone

asked on September 28, 2012
11. ## Physics

Calculate the force required to pull a copper ball of radius 2.00 cm upward through a fluid at the constant speed 6.00 cm/s. Take the drag force to be proportional to the speed, with proportionality constant 0.950 kg/s. Ignore the buoyant force. N

asked on March 1, 2016
12. ## physics

A 2000 kg car is rolling at 2.0 m/s. You would like to stop the car by firing a 12 kg blob of sticky clay at it. How fast should you fire the clay? i keep getting 25.8 but apparently that isn't right so i'm at a loss

asked on November 4, 2012
13. ## physics

When a 2.9 kg object is suspended in water, it "masses" 1.5 kg. What is the density of the object?

asked on December 1, 2012
14. ## Chemistry

How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.20? Assume no volume change. Ka of HCOOH= 5.010^-4

asked on April 30, 2012
15. ## organic chem

looking at this h nmr spectra of 4 isomeric alcohols with the formula c5h12o, make a suitable structure for each spectrum and assign h nmr signals for each H in the molecule i.imgur. com/MTHt3. png

asked on September 15, 2012
16. ## Chemistry

What volume of water would be required to dissolve 1 g of BaF2? mass of BaF2 is 1.31 g and it dissolves in 1 L of water. The answer is 0.763. Can someone please explain how they got this?

asked on June 11, 2011
17. ## Math

A shirt is on sale for 25% (1/4) off. Its original price was \$12. How much is the shirt now?

asked on November 17, 2010
18. ## limit calc question

2 questions!!! 1. Limit X approaching A (X^1/3-a^1/3)/ x-a 2. LiMIT x approaching 0 (1/3+x – 1/3) /x On the first, would it help to write the denominator (x-a) as the difference of two cubes ((x^1/3 cubed - a^1/3 cubed) second. use LHopitals rule. Take

asked on March 2, 2007
19. ## math

how would I find each sum or difference of (5a-2b) + (-4a+5b) what do I do with -2b when you line up the +5b?

asked on July 28, 2008
20. ## Math

Q: A metal cube weighs 5/9kg and its volume is 40 5/6cm3. How much does it weigh per 1cm3? 5/9kg to .555kg 40 5/6cm3 to 40.833cm3 .555kg / 40.833cm3 = .0135 A: 1cm3 weighs .0135kg Is this correct? Thank you.

asked on August 2, 2016
21. ## Math

barry puts TVs on a 15-foot shelf in his electronics store. He allows 2 1/2 feet of space for each TV. He will be able to put 5.5 TVs on the shelf. Is this reasonable or not

asked on November 2, 2011
22. ## Math

Q: Joe's car can go 9 1/7km with 1 liter of gas. How far can it go with 1 1/8 liters of gas? 9 1/7 to 9.143 1 1/8 to 1.125 1 liter / 9.143 = 0.109 liters per km 1.125 liters / 0.109 liters per km = 10.32km A: Joe's car can go 10.32km on 1 1/8 liters of

asked on August 2, 2016
23. ## physics

A(n) 0.42 kg softball is pitched at a speed of 12 m/s. The batter hits it back directly at the pitcher at a speed of 27 m/s. The bat acts on the ball for 0.016 s. What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N ·

asked on February 1, 2015
24. ## science

gravitational force decreases with distance. what does this mean for a space traveler who leaves earth in a spaceship?

asked on May 7, 2014
25. ## Physics

An elevator is moving upward 1.17 m/s when it experiences an acceleration of 0.33 m/s2 downward, over a distance of 0.75 m. What will its ﬁnal speed be? Answer in units of m/s

asked on October 1, 2013
26. ## MATH

a parabola passes via the points (1.5,1) and (3,-5). given that the vertex lies on the line 7x+3y-4=0,find the focus and the equation of the parabola

asked on May 18, 2012
27. ## College Chemistry

A stock solution is prepared by adding 20mL of 0.2M Na3PO4 to enough water to make 80mL. What is the Na+ concentration of 20mL of the stock solution? I am thinking .012: a) .02 times .2 = .004 b).004 times 3 = .012 (for each Na in the molecule) Seems too

asked on March 29, 2012
28. ## Europe

is the european union federation, a confederation or something else?

asked on April 8, 2010
29. ## Math

Q: If 5/6 Liter weighs 9/10 kilograms, how much will 1 Liter of paint weigh? 0.9kg / 5 = 0.18 0.18 * 6 = 1.08 1 Liter of paint will weigh 1.08 kilograms. Is this correct? Thank you.

asked on August 2, 2016
30. ## chemistry

Biosynthesis of proteins from amino acids is an energy driven condensation process (ÄH = + 10 kJ/mol) requiring energy input in the form of ATP. In an experiment, 0.4 mol of amino acids reacted to give a polypeptide and some ATP was consumed. a) explain

asked on April 13, 2014
31. ## CHEMISTRY

How do we determine whether a substance is pure in a chemical formula ?

asked on February 6, 2013
1. ## Science

the awnsers are btw 1B 2B 3A 4TRUE

posted on September 20, 2018
2. ## Science

no ur copying is name cause he responded first just like now im copying both ur names

posted on September 20, 2018
3. ## ELA 6th grade

The answers are bcbba

posted on April 4, 2018
4. ## Science

The other *Kev* is copying my name but eany was the answer is A

posted on April 4, 2018
5. ## social studies

contact me on ps3 my gamer tag is frakenbuger

posted on April 3, 2018
6. ## social studies

eany questions contact me

posted on April 3, 2018
7. ## social studies

the answer are A A C D

posted on April 3, 2018
8. ## Science

GLTTTT Is It A ?

posted on March 22, 2017
9. ## statistics

Far above average

posted on February 25, 2017
10. ## Math

Thank you, Reiny. I see your point about decimals vs. fractions.

posted on August 2, 2016
11. ## Math

I appreciate the help, Reiny. I will review about usable fractions.

posted on August 2, 2016
12. ## Math

Thank you, Reiny. I'm wondering with the way you did the problem, where did you get the number 245 from?

posted on August 2, 2016
13. ## Math

Thank you, Ms. Sue.

posted on August 2, 2016
14. ## math

52.2 m

posted on May 17, 2016
15. ## physic

37500 N 166666.6667 LBS

posted on April 24, 2013
16. ## College Algebra

3xy^4sqt.xy

posted on February 6, 2013
17. ## chemistry

use PV=PV Answer 2.73

posted on October 11, 2012
18. ## Calculus

Hi, Kavya! :D LOL

posted on December 9, 2010
19. ## 4th grade

65

posted on November 17, 2010
20. ## college

for com/220

posted on August 9, 2009