# Christ

Most popular questions and responses by Christ
1. ## phy

An electric kettle contains 1.5 kg of water at 100o C and powered by a 2.0 kW electric element. If the thermostat of the kettle fails to operate, approximately how long will it take for the kettle boil dry? (Take the specific latent heat of vaporization of

asked on January 24, 2013
2. ## Chem

A water sample is suspected to be contaminated by iron (III) ions. How could you determine if the sample is really contaminated?

asked on October 25, 2010
3. ## phy

Calculate the average translational kinetic energy of a nitrogen molecule at 27 degree celcius

asked on January 24, 2013
4. ## phy

A piece of plastic barely floats in water. If it has a mass of 20g, what is its volume?

asked on January 24, 2013
5. ## PHYSICS

A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of

asked on March 7, 2011
6. ## phy

At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a mass of 32kg.

asked on January 24, 2013
7. ## phy

1 What is the gravitational field strength at a height h above the surface of the Earth? R is the radius of the earth gR2(R+h)2 gR(R+h) Rg(R−h) R2g(R−h)2 2 The instrument used for experimental determination of the value of the universal gravitational

asked on January 28, 2013
8. ## phy

1 An object is thrown upward from the edge of a tall building with a velocity of 10 m/s. Where will the object be 3 s after it is thrown? Take g=10ms−2 15 m above the top of the building 30 m below the top of the building 15 m below the top of the

asked on January 28, 2013
9. ## phy

1 Physical quantities such as length, mass, time and temperature are referred to as vector quantities fundamental quantities scalar quantities derived quantities 2 The following are examples of vector quantities except displacment velocity accleration

asked on January 28, 2013
10. ## phy

A 0.5kg piece of metal (c = 600/kgK) at 300 degree celcius is dumped into a large pool of water at 20 degrees celcius. Assuming the change in temperature of water to be negligible, calculate the overall change in entropy for the system

asked on January 24, 2013
11. ## phy

Calculate the electric power which must be supplied to the filament of of a light bulb operating at 3000K. The total surface area of the filament is 8×10−6m2 and its emissivity is 0.92.

asked on January 24, 2013
12. ## Physics

Paul and john have the same mass of 50kg.They both climbed a stairof height 5 meters. Paul climbed the stair in 10 seconds while john climbed the same stair in 15 seconds. Which of them performed greater work? Which of them has more power?

asked on August 16, 2017
13. ## Science

Lead(ll) Iodide can be produced from the reaction of Lead(ll) nitrate and potassium Iodide.What mass of lead(ll) iodide is produced when 50.0 mL of each solution is combined,forming a 0.750 M Solution of potassium nitrate? Please help me to solve this

asked on February 15, 2017
14. ## phy

An engine absorbs 2000J of heat from a hot reservoir and expels 750J to a cold reservoir during each operating cycle. What is the power output of the engine if each cycle lasts for 0.5 seconds?

asked on January 24, 2013
15. ## grammar

Label each clause subordinate or independent. 1. If you visit the city of Chicago.subordinate 2.the Art Institute of Chicago is quite famous independent 3.While the Chicago White Sox play in Comiskey Park. subordinate 4.after the sears Tower was built

asked on November 8, 2009
16. ## phy

If a force of 80N extends a spring of natural length 8m by 0.4m what will be the length of the spring when the applied force is 100N

asked on January 24, 2013
17. ## Spanish

We have to translate the following sentences into spanish [we're working on subjunctive -- adverbial clauses.] He will insist until she accepts. My answer: Insistirá hasta que acepte. Is this right? I know insistir often carries along "en", but it doesn't

asked on January 31, 2007
18. ## phy

Calculate the change in internal energy of 2kg of water at 90 degree Celsius when it is changed to 3.30m3 of steam at 100oC . The whole process occurs at atmospheric pressure. The latent heat of vaporization of water is 2.26×106J/kg

asked on January 24, 2013
19. ## english

Identifying the subordinate clauses.then write Noun,adjective, or adverb to tell what kind of clause it is. 1-Elizabeth Kenny was a nurse who treated polio patients. answer: who treated polio patients. its an adverb clause. 2-Whoever broke the window will

asked on November 12, 2009
20. ## grammar

Tell if the sentences, are phrase write phrase if it is a clause, write independent or subordinate. 9 Before settlers arrived .(phrase) 10 In 1794 .(phrase) 11 When it became a city .(subordinate) 12 Chicago had its first railroad.(independent) 13 Before

asked on November 8, 2009
21. ## Science

How many grams of ammonium nitrate nedd to be added to 500g of water so that the freezing point becomes -8.3 °C?

asked on February 14, 2017
22. ## phy

A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the

asked on January 28, 2013
23. ## phy

Tinny insects such as mosquitoes can seat on the surface of water. Which physical principle makes this possible?

asked on January 24, 2013
24. ## phy

A string of natural length L extends to a new length L' under tensile force F. If Hooke’S law applies, the work done in stretching the spring is ------------

asked on January 24, 2013
25. ## math equation

Is the answer for this equation: 4+8[9/3(9-6)] = 12

asked on January 4, 2010
26. ## grammar/Ms Sue

14 during the great fire (independent 15 After industries were rebuilt(subordinate

asked on November 8, 2009
27. ## math/equation/Paul

I meant is 12 the correct answer to the equation 4+8[9/3(9-6)]

asked on January 4, 2010
28. ## english/MS SUE/SUBORDINATE CLAUSE

SO NUMBER 1 WHO TREATED POLIO PATIENTS. ITS AN ADJECTIVE CLAUSE. 5-WHEN YOU LEAVE FOR SCHOOL. ITS ADVERB CLAUSE.

asked on November 12, 2009
1. ## Physics

YOU ARE THE FOOOOOOLLL

posted on September 27, 2018
2. ## Science

Can you please give me the formula

posted on February 15, 2017