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2012
August
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August 1, 2012
How much heat is required to raise the temperature of a 4.3-kg block of steel by 48 K? (The specific heat of this steel is 450
1 answer
asked by
Sierra
453 views
An ice cube of volume 17.7 cm3 is initially at a temperature of -19.3°C. How much heat is required to convert this ice cube
3 answers
asked by
Sierra
636 views
You drop 378 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire
2 answers
asked by
Sierra
724 views
To the nearest tenth,what is the circumference of a circle with an area of 49pi?
2 answers
asked by
Grace
694 views
If you combine 34 kg of ice at 0°C with 80 kg of steam at 100°C, what is the final temperature of the system?
°C
2 answers
asked by
Sierra
1,081 views
Your swimming pool is square and 4.9 m on a side. It is 3.9 m deep in the morning. If the temperature changes by 44°C during
1 answer
asked by
Sierra
443 views
A rectangular aluminum plate has an area of 0.41 m2 at 23°C. If it is heated until its area has increased by 4.4 10-6 m2, what
1 answer
asked by
Sierra
1,106 views
If a line L with a slope of -2/5 passes through the points (5,0) and (x,-2) then what is the value of x?
1 answer
asked by
Grace
322 views
Use the exact values you enter in previous answer(s) to make later calculation(s).
Energy-efficient windows are constructed with
1 answer
asked by
Sierra
523 views
The intensity of sunlight at the the top of the Earth's atmosphere is about 1350 W/m2. (The intensity at the surface of the
3 answers
asked by
Sierra
664 views
The radius of the small circle A is one-half the radius of the large circle B.WHat is the ratio of the area of the small circle
4 answers
asked by
Grace
1,840 views
A snake is sunning itself on a rock.
(a) If the snake is 0.5 m long, what is the approximate amount of radiation it absorbs from
1 answer
asked by
Sierra
590 views
In a circle with radius 20cm, a chord is drawn with length 12 cm.
Find the area of the two regions created. Find the perimeter of
3 answers
asked by
Jennfier
430 views
Watching Old Faithful erupt, you notice that it takes a time for water to emerge from the base of the geyser and reach its
3 answers
asked by
Anonymous
969 views
For the reaction
IO3– + 5I– + 6H+ 3I2 + 3H2O the rate of disappearance of I– at a particular time and concentration is 2.8
3 answers
asked by
Greg
1,672 views
If I have cards numbered 1 through 40 and I randomly draw 3 then replace them, shuffle them and draw three again what are the
1 answer
asked by
Kyle
400 views
DIRECTIONS:Rewrite without using absolute the absolute value symbol.
a. (-5)|3-6|
2 answers
asked by
alex
901 views
If θ represents an angle such that sin2θ = tanθ - cos2θ, then sin θ - cosθ =
A. -√2 B. 0 C. 1 D. 2√2 What equation can
4 answers
asked by
Peter
1,745 views
Which one is a better deal?
48 sheets of origami for $2.75 or 55 sheets of origami paper for $3.10
1 answer
asked by
Brynn
397 views
A wheel with radius 25.2 cm rotates with constant angular acceleration 3.75 rad/s2 (radians per second per second). If at t = 0
2 answers
asked by
Mike
718 views
how long does a piece of wire need to measure to get 18" diameter?
1 answer
asked by
Rita
382 views
If xΩy is defined as the smallest integer of which both x and y are factors, then 10Ω32 is how much greater than 6Ω20?
5 answers
asked by
John
901 views
Calculate the mole fraction of glucose (C6H12O6) in a solution which contains 15g of glucose in 100 g of H2O.
3 answers
asked by
Greg
645 views
the equation n2+3h2 2nh3
2 answers
asked by
sai ram
910 views
State the principle of impulse and momentum. And clearly difference between impulse and impact
2 answers
asked by
Rajan
956 views
Z-12 / 3=4
1 answer
asked by
Krissy
383 views
a rectangular pool has a volume of 375 m.The pool is 10 m long and 5m wide, how deep is the pool
3 answers
asked by
Anonymous
615 views
A hill in Colorado makes an angle of 15.0° with the horizontal and has a building at the top. At a point
75.0 feet down the hill
2 answers
asked by
Cyndy
584 views
The sides and bottom of a swimming pool are to be lined with vinyl to prevent it from leaking.The pool measures 6m by 4m, and
1 answer
asked by
Trang
472 views
How many ml of terpin hydrate elixirs containing 33mg/5ml and 5mg/5ml needed to prepare 6 fl oz of an elixir containing 4mg
1 answer
asked by
Fai
471 views
A volume of 40.0 of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid h2so4. What was the
2 answers
asked by
Fai
689 views
From a lighthouse (270m above the ocean), an observer notices a ship. The lighthouse is setback from the ocean about 60m. To
2 answers
asked by
Ryan
532 views
A particular microwave oven operates at 1000W. The wavelength of the microwave is 12.0cm. You decide that you like your snack to
3 answers
asked by
Rosh
670 views
find the total number of feet of wood needed if the trellis is 8 feet tall and 2 feet wide.
2 answers
asked by
cynthia
558 views
Wheel X with radius 5 makes 5 revolutions along a road, and wheel Y with radius 6 makes 4 revolutions along the same road. What
1 answer
asked by
Anonymous
392 views
what is the area of a regular hexagon inscribed in a circle with area of 9?
1 answer
asked by
Sara
368 views
a polygon P is inscribed in a circle C with area of pie. Circle C and polygon P MUST intersect in at least how many points?
1 answer
asked by
Sara
422 views
A police car traveling at 94.5 km/h is traveling west, chasing a motorist traveling at 77.2 km/h.
(a) What is the velocity of the
4 answers
asked by
John
6,908 views
Statements P->Q, ~R->(S->T), R v(P v T), and ~R are true. What is the truth value for the statement, (Q v S)?
4 answers
asked by
Jerry
1,041 views
The half life of a radioactive sample is 6.93 days.after how many days will only one -tenth of the sample be left behind?
2 answers
asked by
Mira
936 views
Why CuO powder not soluble in hexane and methanol?
1 answer
asked by
Magi
399 views
Why CuO nanoparticles not dissolved in ammonium hydroxide and water?
1 answer
asked by
magesh
406 views
Social anthropologists attempt to explain the social emergence, evolution and development of the human race. They also try to
1 answer
asked by
rfvv
522 views
1. When the cheese is being aging, the bacteria make their way into it.
(Is this sentence correct? Would you correct the errors
1 answer
asked by
rfvv
384 views
A committee of architects and firms was formed to plan the Word's Exposition buildings. The collective result was the
1 answer
asked by
rfvv
683 views
a flywheel has an angular speed of 1200rev/min when its motor is turned off.the wheel attains constant decelerations of
3 answers
asked by
sanjeev kumar
477 views
A metal storage tank of external area 0.5 m^2 contains water at 65 degree C. & is located inside a large enclosure with wall at
1 answer
asked by
Dhilsath
457 views
Explain thermal conductivity & give its variation in case of solid, liquids and gases?
1 answer
asked by
Dhilsath
450 views
Define Thermal diffusivity law?
1 answer
asked by
Dhilsath
306 views
Fill In the Blanks:
1.The physical significance of ....... is that it tells us how fast heat is propogated or it diffuses through
7 answers
asked by
Dhilsath
544 views
A punching machine carries out 5 holes per minute. Each hole of 30 mm dia in 40 mm thick plate requires 10 NM of energy per mm^2
1 answer
asked by
Dhilsath
908 views
Fill in the blanks:
1. A disc is spinning with an angular velocity w rad/sec about the axis of pin. The coupled to the causing
3 answers
asked by
Dhilsath
686 views
What is the value of the focal length fn2
of a convergent lens with index of refraction ( n2 =1.5) if it was fn1 =5cm for an
1 answer
asked by
fa 2
478 views
Whether the gauge pressure at 500m below sea level will be game as gauge pressure at ground level? Give reason.
2 answers
asked by
ishwar
551 views
A car of weight W = 12.3 kN makes a turn on a track that is banked at an angle of θ = 20.9°. Inside the car, hanging from a
2 answers
asked by
ayhan
633 views
A fin 30 cm long & 10mm diameters throughout is made of steel alloy of thermal conductivity 43 W/m-deg. the fin attached to a
2 answers
asked by
Rafeeq
567 views
A fin 30 cm long & 10mm diameters throughout is made of steel alloy of thermal conductivity 43 W/m-deg. the fin attached to a
5 answers
asked by
Guru
1,888 views
1.The physical significance of ....... is that it tells us how fast heat is propogated or it diffuses through a material during
3 answers
asked by
Devi
495 views
find the flux of F=<0,y,z> across the parabolic sheet given by x=2y^2+2z^2+3, with x <= 5
2 answers
asked by
Antonio
733 views
consider the curved cylinder surface whose center line is the x axis and is between the planes x=0 and x=5.the radius is 4. Find
1 answer
asked by
Antonio
374 views
convert 7800 into scientific notation
3 answers
asked by
verkesia
417 views
a dog uses 55lbs of food a day. how many pounds are used in a year?
1 answer
asked by
verkesia
340 views
Simon's monthly take home pay (after taxes) is 2500.if he pays 21% of his gross pay(before taxes) in taxes. what is the gross
3 answers
asked by
verkesia
2,129 views
a new sidewalk will be 5ft wide 160ft long and 3ins deep.how many cubic yards of concret is needed?
4 answers
asked by
verkesia
1,578 views
If you assume that there is 5% acetic acid in vinegar, how much vinegar should you weigh out so that the endpoint requires 25.0
4 answers
asked by
Luke
1,336 views
Compute the heat flux thoroughly a 10 cm thick brick wall (k= 0.69 W/m-deg) Which has temperature of 105° C & 10° C maintained
3 answers
asked by
SIDDIQUE
891 views
The door of a domestic refrigerates has an area of 1.7 m2 & it basically consists of a thin metal sheet with a 25 mm thick layer
6 answers
asked by
SIDDIQUE
648 views
if you invest 2000 in an acount for 20 years that pays 6% simple intrest.how much money would you have at the end?
2 answers
asked by
verkesia
674 views
True or false
(i) Steel is better conductor of heat than bricks. (ii) Radiations are ultrasonic waves. (iii) Black body is having
3 answers
asked by
siddique
1,142 views
How does the force between two objects change when the mass of one object and distance between the two object are doubled.
1 answer
asked by
Anupam khatiwara
409 views
Determine which of the following items are inductive generalizations and which are statistical syllogisms. Explain your answer.
1
1 answer
asked by
TIA
519 views
how do I find the the relationship between Y and X on a input/output table
2 answers
asked by
celestial
687 views
The municipal swimming pool in Nicetown has three different ways of paying for individual open swimming. Evan is trying to
5 answers
asked by
Morgan
1,231 views
How would a fall in U.S. interest rates affect Canadian investment, saving, net foreign investment, and the Canadian real
1 answer
asked by
Anonymous
414 views
a differential band brake has a drum of diameter 800mm. the two ends of the band are fixed to the pins on the opposite sides of
4 answers
asked by
raju
1,915 views
Simplify:2x-9 Divided by 9-2x
4 answers
asked by
Wanda
433 views
1. the contact ratio is.......
(a)zero (b)more than one (c)less than one (d)none of these 2. the ratio of maximum displacement of
4 answers
asked by
raju
649 views
From a lookout tower 80 ft. high, a man observes from a position 6.5 ft. below the top of the tower that the angle of elevation
4 answers
asked by
Sasuke
2,052 views
From a mountain 1780 ft. high, the angle of depression of a point on the nearer shore of a river is 48 degrees 40 minutes and of
3 answers
asked by
Sasuke
730 views
My question is that I want a project based on the Human Body.Like a project of Cells ( I have done that) HELP give me ideas
1 answer
asked by
BlueBerryAqua
441 views
Because of the wind, a boat sails 4 728 meters in the directions S 47 degrees 29 minutes W. How far south has it gone? How far
1 answer
asked by
Sasuke
355 views
Choose all the answers that apply.
It's important to keep your exercise intensity within your target heart rate range so that
2 answers
asked by
Morgan
866 views
What is the value of the focal length fn2
of a convergent lens with index of refraction ( n2 =1.5) if it was fn1 =5cm for an
1 answer
asked by
MM1
493 views
1. Which of the following best describes how the graph of f can be obtained from the graph of y = 1/x^2? f(x) = 4/x^2
a. vertical
2 answers
asked by
Kameesha
1,197 views
1.an = 3n - 1
2. an = 2(2n - 3) 3.an = 4^n 4.an = (2/3)^n 5. an = (-1)^n(n + 5) 6. an = (-1)^n + 1(n + 6) 7. an= n+3/2n-1 8. a1 =
3 answers
asked by
Tony
1,146 views
If a 3/8" drill bit is rotating clockwise at 1300 RPM and the bit shatters, at what speed will the projectile be traveling
1 answer
asked by
Troy
437 views
What percentage of college students are attending a college in the state where they grew up? Let p be the proportion of college
4 answers
asked by
Anonymous
1,389 views
An airplane is flying on a heading of 115° with a constant velocity of 675 mph. How far south will it
travel in 2 hours if it
1 answer
asked by
Cyndy
510 views
1. A person with a square face shape and a rectangle body shape has what bodyline?
A. Straight.(yes) B. Sharp-straight C.
3 answers
asked by
need to check my answers
865 views
• Assignment 1: Chocolate Delights Candy Company, Part 1
Due Week 5 and worth 210 points Chocolate Delights Candy Company
3 answers
asked by
Moe
1,217 views
A 175-pound force and a 230-pound force are acting on the same point in directions that differ by 42°.
What is the angle that
2 answers
asked by
Cyndy
952 views
Researchers found that a ________ is more important and is the key to losing weight rather than a popular one.
A. Fad diet B.
11 answers
asked by
Aya
597 views
Why is having excessive abdominal fat a serious concern?
A. Because it places you at a greater risk for developing obesity
7 answers
asked by
Aya
468 views
What are the three types of eating disorders discussed in your reading materials?
A. Anorexia, bulimia, binge-eating B. Anorexia,
7 answers
asked by
Aya
639 views
BMI is used to screen for ________.
A. Weight categories that may lead to health problems B. Weight categories that may lead to
7 answers
asked by
Aya
556 views
In order to lose weight you have to ________.
A. Eat more B. Eat less C. Burn more calories than you consume D. Burn less
1 answer
asked by
Aya
479 views
How do you lose weight?
A. By using up more energy than you take in B. By using up more money on diet programs and pills C. By
3 answers
asked by
Aya
393 views
How do you lose weight?
A. By using up more energy than you take in B. By using up more money on diet programs and pills C. By
1 answer
asked by
Aya
350 views
The National Weight Control Registry found in their research that those who had maintained a significant weight loss reported
4 answers
asked by
Aya
568 views
If you’ve decided to lose weight then ________.
A. Modest weight loss can lead to little health benefits B. Even modest weight
2 answers
asked by
Aya
548 views
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