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A Carnot refrigerator is used in a kitchen in which the temperature is kept at 301 K. This refrigerator uses 216 J of work to
1. 1 answer
2. 893 views
A lawnmower engine with an efficiency of 0.29 rejects 5500 J of heat every second. What is the magnitude of the work that the
1. 1 answer
2. 504 views
Assume that the pressure is one atmosphere and determine the heat in joules required to produce 2.99 kg of water vapor at 100.0
1. 0 answers
2. 579 views
An ice chest at a beach party contains 12 cans of soda at 2.45 °C. Each can of soda has a mass of 0.35 kg and a specific heat
1. 0 answers
2. 697 views
A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30)
1. 1 answer
2. 661 views
A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30)
1. 1 answer
2. 726 views
A 17 foot ladder is placed against a wall. if the foot of the ladder is pushed toward the wall at 0.5 feet per second, how fast
1. 1 answer
2. 1,213 views
A person is standing outdoors in the shade where the temperature is 22 °C. (a) What is the radiant energy absorbed per second
1. 1 answer
2. 1,320 views
The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 250 J/s. The energy is
1. 1 answer
2. 4,167 views
Add and convert 4-4/5 + 3-3/5=
1. 3 answers
2. 416 views
Using a ruler to draw a square with a perimeter of 48ft, and using the scale 6ft=1/2in (Hint: to find the length of each side,
1. 1 answer
2. 679 views
lisa borrowed $8000.00 on an 8%, 60 day note after 15 days she paid $2000.00 on the note , on day 45 , she paid $1000.00 on the
1. 0 answers
2. 645 views
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the
1. 3 answers
2. 803 views
When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the
1. 1 answer
2. 2,146 views
A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 36.00°. The indices of refraction for the
1. 0 answers
2. 1,051 views
An object that is 32 cm in front of a convex mirror has an image located 17 cm behind the mirror. How far behind the mirror is
1. 0 answers
2. 413 views
A small mirror is attached to a vertical wall, and it hangs a distance of 1.81 m above the floor. The mirror is facing due east,
1. 0 answers
2. 1,128 views
You are trying to photograph a bird sitting on a tree branch, but a tall hedge is blocking your view. However, as the drawing
1. 0 answers
2. 767 views
I have two separate questions that I am having trouble answering...Why is Roman law often considered to be the greatest
1. 2 answers
2. 654 views
If gasoline costs $0.42 a liter, approximately how much will it cost to fill a 40 gallon tank?
1. 1 answer
2. 490 views
Three machines turn out all the products in a factory, with the first machine producing 40% of the products, the second machine
1. 0 answers
2. 958 views
If the molality of a CaCl2 solution is .100 mol/kg, and was made from 500.0 mL of water, how many grams of CaCl2 were needed to
1. 3 answers
2. 1,313 views
If you add enough water to 175.0 mL of a .15 M NaCl solution until the final volume is 350.0 mL, what will the molarity of the
1. 2 answers
2. 457 views
You have 12 square tiles,each tile measures 1 foot on each side,how many non congruent rectangles can you make ?,each rectangle
1. 0 answers
2. 521 views
A pad of loose-leaf paper is $0.40 less than a notebook. Together they cost $1.80. How much does the loose-leaf paper cost?? The
1. 4 answers
2. 485 views
Mr lopez is putting up fence around his garden that is the shape of a rectangle,if the longer sides is 14 feet and the shorter
1. 5 answers
2. 524 views
A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is
1. 0 answers
2. 1,094 views
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of
1. 2 answers
2. 972 views
In a room that is 2.69 m high, a spring (unstrained length = 0.28 m) hangs from the ceiling. A board whose length is 2.22 m is
1. 1 answer
2. 958 views
A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 68.0 s.
1. 1 answer
2. 710 views
A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 68.0 s.
1. 2 answers
2. 3,404 views
The mass of a string is 6.8 x 10-3 kg, and it is stretched so that the tension in it is 210 N. A transverse wave traveling on
1. 3 answers
2. 644 views
A string has a linear density of 6.2 x 10-3 kg/m and is under a tension of 250 N. The string is 1.2 m long, is fixed at both
1. 1 answer
2. 951 views
The distance between a loudspeaker and the left ear of a listener is 2.19 m. (a) Calculate the time required for sound to travel
1. 4 answers
2. 1,763 views
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1390 Hz. The bird-watcher, however, hears a
1. 1 answer
2. 2,041 views
Two out-of-tune flutes play the same note. One produces a tone that has a frequency of 242 Hz, while the other produces 288 Hz.
1. 1 answer
2. 1,271 views
If a string fixed at both ends is vibrating at a frequency of 4.61 Hz and the distance between two successive nodes is 0.293 m,
1. 1 answer
2. 471 views
If a string fixed at both ends is vibrating at a frequency of 4.61 Hz and the distance between two successive nodes is 0.293 m,
1. 1 answer
2. 537 views
A string has a linear density of 6.2 x 10-3 kg/m and is under a tension of 250 N. The string is 1.2 m long, is fixed at both
1. 1 answer
2. 641 views
A string is fixed at both ends and vibrating at 120 Hz, which is its third harmonic frequency. The linear density of the string
1. 1 answer
2. 1,572 views
What number is 3/5 of 65?
1. 5 answers
2. 361 views
If the diameter of a circle is 5 in., what is the radius?What is the relationship of the diameter of a circle to radius?
1. 3 answers
2. 1,419 views
33 1/3%+16 2/3%=
1. 3 answers
2. 258 views
The school has raised $1,200 over the last 2 years. This year the school raised $200 more then last year. How much money did the
1. 1 answer
2. 476 views
Shirley and Amy painted faces at the fair for an hr. sixteen children had their faces painted. Shirley was able to paint 3 times
1. 1 answer
2. 480 views
What are ways that animals can help each other
1. 0 answers
2. 372 views
What can I use as key words to search for information regarding REI's SCM?I have been on this assignment forever and trying to
1. 2 answers
2. 618 views
Emil had great luck at the game,but Kim did not. Together they won 16 prizes. Emu won 10 more than Kim. How many did each win?
1. 1 answer
2. 448 views
The burning if 18.0 g of carbon produces 55.0 g of carbon dioxide. What is the theoretical yield of CO2? Calculate the percent
1. 2 answers
2. 921 views
Sue and bob both jumped rope to raise money. Together they earned $24. Sue earned twice as much as bob. How much money did each
1. 1 answer
2. 412 views
What fraction of a circle is 33-1/3% of a circle?
1. 2 answers
2. 2,544 views
What fraction is half of the fraction that is half of 1/2?
1. 4 answers
2. 1,442 views
There were 20 more fifth graders then fourth graders. 140 students from both grades. How many fifth graders were there?
1. 1 answer
2. 522 views
Eric and Albert won prizes for selling the most raffle tickets. Together they sold 100 tickets. Albert sold 16 tickets more than
1. 1 answer
2. 446 views
Eric sold 16 more tickets then Albert. Together they sold 100 tickets. How many did each person sell?
1. 1 answer
2. 403 views
Can a triangle have parallel line segments. And is any line segment in the drawing parallel to the line segment AB? The figure
1. 1 answer
2. 651 views
Suppose that there is a partial blockage of the aorta, which normally pumps about 5 L of blood perminute. If the diameter of the
1. 1 answer
2. 1,871 views
A block of mass m = 3.40kg and charge q = 1.50C is on an incline plane that makes an angle è = 33.0o with the horizon. An
1. 0 answers
2. 422 views
A car (mass = 1080 kg) is traveling at 25.4 m/s when it collides head-on with a sport utility vehicle (mass = 2750 kg) traveling
1. 1 answer
2. 660 views
A 48.8-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a
1. 1 answer
2. 1,256 views
What is the predicate of this sentence,Henry and Mudge hear something.Is hear something the predicate
1. 4 answers
2. 1,762 views
An ice skater of mass m is given a shove on a frozen pond. After the shove she has a speed of 2m/s. Assuming that the only
1. 2 answers
2. 1,134 views
An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. If the object is released from rest
1. 1 answer
2. 1,195 views
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same
1. 2 answers
2. 2,890 views
An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. How much work is done by the lifting
1. 2 answers
2. 3,965 views
Factor: 12x^2+13x-35I need help on how you would go about doing this. I only understand when 1 is the coefficient for the x^2
1. 1 answer
2. 544 views
A race car travels 110 m/s around a circular track of radius 197 m. The track is banked at 22 degrees from the horizontal with a
1. 0 answers
2. 1,006 views
A 10 ohm resistor is connected in series with a 15 ohm resistor. If this circuit is connected to a 9 volt battery, what will be
1. 1 answer
2. 864 views
How would you go about doing this problem? I've tried and with the answer given I still can't figure it out. If anyone could
1. 3 answers
2. 507 views
Kathy's mom has made a batch of lemon bars. Her treats are in a rectangular pan that measures 12" x 8". She will cut a vertical
1. 1 answer
2. 561 views
Carrying household appliances can be very difficult due to the weight and size. Some movers place the appliance on a dolly and
1. 0 answers
2. 547 views
You are the designer of a school bus and would like to know what the maximum stopping distance is that will ensure the students
1. 0 answers
2. 455 views
Two people push on a box that has a mass of 10kg, the person on the right has a mass of 86kg and applies a horizontal force of
1. 0 answers
2. 1,032 views
Two blocks, (Mass of block 1 = 2.3kg, Mass of block 2 = 1.2kg), are in contact on a frictionless table. If a horizontal force of
1. 0 answers
2. 987 views
You have setup an experiment with two 50g masses attached to strings that are connected on opposite sides of a scale that
1. 0 answers
2. 1,092 views
Two blocks, (Mass of block 1 = 2.3kg, Mass of block 2 = 1.2kg), are in contact on a frictionless table. If a horizontal force of
1. 0 answers
2. 1,230 views
Two people push on a box that has a mass of 10kg, the person on the right has a mass of 86kg and applies a horizontal force of
1. 0 answers
2. 529 views
You are the designer of a school bus and would like to know what the maximum stopping distance is that will ensure the students
1. 1 answer
2. 551 views
Carrying household appliances can be very difficult due to the weight and size. Some movers place the appliance on a dolly and
1. 1 answer
2. 593 views
Police examine the scene of an accident involving two cars, which is parked. The skid marks of the moving car, which nearly came
1. 1 answer
2. 1,103 views
What is the slope of the line that passes through (-12.5,3.2)(-15.5,-7.2)?I think the answer is: -10.4/-3.5. Not sure on this
1. 1 answer
2. 972 views
What is the slope of the line that passes through (3/5,-2)(-6,2/9)?I don't even have a good guess at this one. Thanks.
1. 0 answers
2. 680 views
What is the slope of the line that passes through (3/5,-2)(-6,2/9)?I don't even have a good guess at this one. Thanks.
1. 1 answer
2. 629 views
What is the slope of the line that passes through (-12.5,3.2)(-15.5,-7.2)?I think the answer is: -10.4/-3.5. Not sure on this
1. 1 answer
2. 899 views
What is the slope of the line that passes through (5,8)(17,2)?I think the answer is: -1/2 (1 over 2)
1. 3 answers
2. 395 views
Traveling at a speed of 20.0 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The
1. 0 answers
2. 621 views
A 96.6-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with
1. 1 answer
2. 849 views
An airplane has a mass of 2.04 × 104 kg and takes off under the influence of a constant net force of 2.18 × 104 N. What is the
1. 0 answers
2. 535 views
How do I begin to simplify this?3x/(4x-5y)=6ay-14b
1. 1 answer
2. 1,001 views
Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic
1. 0 answers
2. 723 views
If half the batch of 6,000 vials are contaminated, what is the probability of finding no contaminated vials if only two vials
1. 1 answer
2. 416 views
The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle θ. One
1. 1 answer
2. 1,941 views
The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle θ. One
1. 0 answers
2. 1,025 views
A 25.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to
1. 1 answer
2. 1,146 views
A man in an elevator is 79kg. The elevator itself is 860kg. As the elevator begins to move down, a scale the man is standing on
1. 0 answers
2. 724 views
Here's the question:You are attending a very loud concert. To avoid permanent ear damage, you decide to move farther from the
1. 0 answers
2. 594 views
complete the square 16x-12y=4y^2+1
1. 1 answer
2. 528 views
Given the formula Xc=1/6.28fC, find C if Xc =500 and f=2000.What are the rules that take me from 500/1 = 1/6.28*2000*C to the
1. 2 answers
2. 571 views
A 15.2-F capacitor has an initial voltage of 2.00 V. It is charged with a current given by i=t�ã5=t^2. Find the voltage across
1. 2 answers
2. 611 views
You've been assigned to invite a group of mechanical engineering professors to tour your facility. What type of language should
1. 1 answer
2. 540 views

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