# 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

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

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

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

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

6. ## Chemistry

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

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?

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.

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

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

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

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

13. ## physics

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

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

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

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?

17. ## Math

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

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

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?

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.

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

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

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 ·

24. ## science

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

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

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

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

28. ## Europe

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

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.

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

31. ## CHEMISTRY

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

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

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

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

posted on October 11, 2012
18. ## Calculus

Hi, Kavya! :D LOL

posted on December 9, 2010