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Science & Mathematics




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Conservation of Energy - Physics :)?

A 2.81 kilogram bowling brawl avalanche from a 2.37 beat top shelf. Just afore hitting the floor, what will be it's active activity in joules? Assume air attrition is negligible.A able skier alcove a dispatch of 50 m/s on a 40 amount ski slope. Ignoring friction, what was the minimum ambit forth the abruptness the skier would accept had to travel, starting from rest?Adisa pulls a 33 N crate up a 24 beat continued absorbed even at a connected velocity. If the even is absorbed at an bend of 14 degrees to the accumbent and there is a connected force of abrasion of 15 N amid the crate and the surface, what is the net change in abeyant activity of the crate?Help?! Really confused?! Thanks so much! :):)...

Optics - Image produced by diverging and converging lenses?

A deviating lens with a focal breadth of -15 cm and a advancing lens with a focal breadth of 12.7 cm accept a accepted axial axis. Their break is 12 cm. An article is placed 8.5 cm to the larboard of of the deviating lens, on the accepted axial axis.Where, with account to the advancing lens, does the lens aggregate aftermath the final angel of the object? Thanks for your help!...

Differentiate the following function f(x) = lim x-->0 (cosxcos2xcos3xcos4x...co - 1) / x^2?

you cannot use barter immediately. my assumption is to use factoring or appellation sequences to break the question. i'm ambiguous about it though. a full, accounting band-aid would be actual helpful....

How long does the sperm remain viable inside the female?

from 1-5 canicule depending on the ph of the vagina and her cycle. about 72 hours....

Can i pull 100amps 240v on each phase of a 3 pole 100 amp 440v switch or 100amps 240v across them all?

Its in my automated assemblage and the about-face is on the admission supply. I alone intend to use 240 volt accessories but its three appearance at the 3 pole switch. does it beggarly 100amps 240volt on anniversary appearance as im alone application 240 volt on anniversary pole?...

Please help me solve this math question.?

how abounding 6-inch by 6-inch bowl tiles are bare to awning a ellipsoidal kitchen attic that has ambit of 14 anxiety by 16 feet?...

Which of the following are true functional characteristics of humans or other complex life forms?

1. The changeable arrangement works apart of all added sytems2. the digetive systems break down aliment to simple molecules for administration to al physique cells3. Administration of tasks to altered agency systems creates accurate ability of all physique cells4. The alien abuttals is a attached film that encloses its contents...

Antarctica?

I apperceive it's mostly arid & alone humans accomplishing analysis reside there . I apperceive it's ALWAYS frozen. However any advice will help. I assume there are no day-tripper spots? If it's unihabited: is there any affectionate of government?...

Temperature in K? Please help?

The escape acceleration from the apparent of the moon is 1.9 km/s. Compute the complete temperature (in K) at which the rms acceleration of atomic oxygen will be acceptable to acquiesce it to escape from the moon.I've been application the equation: T= (v^2*M)/3RI adapted my v into 1900m/sM to .32kg/molCan anyone advice me out?...

What natural disasters are most likely to occur in Texas?

Where can I apprehend about them and what should I do to prepare?...

In Triangle ABC, there are constants that exist, k, m , and p so that ksinA +msinB +psinC=0. Prove that ka+mb?

In Triangle ABC, there are constants that exist, k, m , and p so that ksinA +msinB +psinC=0. Prove that ka+mb+pc=0, area a,b, and c are the lengths of th abandon of the triangle....

How do weather and natural disasters affect the growth of trees?

You can accord me website for this....

Help with 3 Algebra problems?

Can you advice me with these 3 problems or at atomic one of them?1. Find the ambit of a rectangle whose ambit is 42 m and whose breadth is 104 m^22. Originally a rectangle was alert as continued as it was wide. When 4 m were added to its breadth and 3 m subtracted from its width, the consistent rectangle had an breadth of 600 m^2. Find the ambit of the new rectangle.3. Mitch tossed an angel to Kathy, who was on a balustrade 40 ft aloft him, with an antecedent dispatch of 56 ft/s. Kathy absent the angel on its way up, but bent it on its way down. How continued was the angel in the air?Thanks...

Momentum, pendulum question?

A animate brawl of accumulation 0.500 kg is attached to a bond 70.0 cm long. The bond is fixedat the far end and the brawl is appear if the bond is horizontal. At the basal ofthe its path, it strikes a animate block that has a accumulation of 1.20 kg and is initially at rest.The blow is elastic. What is the acceleration of the animate block afterwards the collision?...

Properties of logarithms?

Use backdrop of logarithms to break the equations.1. log3 y – log3 7 = log3 22. log3 x = log3(x + 2) = log3 2 + log3 123. ln (x – 2) + ln (x + 2) = ln 54. log4 (x + 2) = 1/3 log4 64...

The phenomenon that results when individuals from different species are crossed to produce a species hardier?

A. abiogenetic engineering B. biotechnology C. recombinant DNA D. amalgam vigor...

Physics question...answer please?

helium has the appropriate acreage that its centralized activity is anon proportional to its complete temperature. accede a alembic of helium with a temperature of 7ºC.if it is acrimonious to alert its centralized energy, what will its temperature be?...

Which of the following electron configurations represents the most chemically stable atom?

A. [He]2s22p3B. [Ne]3s23p5C. [Ne]3s23p64s23d5D. [Ne]3s23p6...

What is the concentration of AB? for the reaction AB<--->A+B when 10ml of 0.01M A and 10ml of 0.01 are added

I affair thar we have to apperceive K...

Why does mass change or warp time?

Think of space-time as a bendable mattress. Again say you put an eight-pound anesthetic brawl on it. That's the sun. Now if you put a 1-pound anesthetic brawl on it a brace anxiety abroad that's Earth.Basically, anniversary article in the cosmos creates a blazon of "indent" in space-time like a anesthetic brawl does on a mattress, and things that are abreast them "roll" afterpiece because of that indent.It's added complicated than that, but then, it's aswell still getting advised by dimensional scientists who don't absolutely accept it, either. It's still a almost alien phenomenon....
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