Thursday
May 26, 2016

Posts by Emily

Total # Posts: 2,777

Physics
Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over a frictionless, massless pulley. Block B hangs down vertically. When the two blocks are released, Block B accelerates downward at a rate of 2.030 m/s2. What is the ...
February 18, 2016

Physics
The initial velocity of a 2.75 kg block sliding down a frictionless inclined plane is found to be 1.25 m/s. Then 1.05 s later, it has a velocity of 5.31 m/s. What is the angle of the plane with respect to the horizontal? I keep trying to use sine and cosine but I can't ...
February 17, 2016

chemistry
why are there only certain colours in an atomic emission spectra?
February 16, 2016

Physics
A 4.96 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=13.7N at an angle theta=16.0degrees above the horizontal. What is the magnitude of the acceleration of the block when the force is applied? I know a=F/m
February 16, 2016

Physics
Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 8 kg, m2 = 33 kg, and m3 = 49 kg. The pulling force is equal to T3 = 89 N. What is the ...
February 16, 2016

Physics
An elevator (cabin mass 600 kg) is designed for a maximum load of 2700 kg, and to reach a velocity of 3.4 m/s in 5 s. For this scenario, what is the tension the elevator rope has to withstand? I know I have to multiply the mass by the acceleration. I'm having a hard time ...
February 16, 2016

chemistry
Iron can be produced by the reduction of iron(III) Oxide by carbon monoxide: Fe2O3 + 3CO -> 2FE +3CO2 a) what maximum mass of CO2 could be produced from the complete reduction of 14.7g of Fe2O3? b) if 8.73g of CO2 gas was actually collected, what percentage yield of the ...
February 15, 2016

Physics
A block of weight 30.9 N is hanging from a rope. The tension from the rope is pulling upward on the block. The block is accelerating downward at a rate of 1.20 m/s2. What is the magnitude of the tension in the rope? I found the mass of the block to be 25.75 kg; however, I'...
February 9, 2016

Physics
A block of weight 30.9 N is hanging from a rope. The tension from the rope is pulling upward on the block. The block is accelerating downward at a rate of 1.20 m/s2. What is the magnitude of the tension in the rope?
February 9, 2016

government
Well, I think that we should abolish it because of the numerous scandals we've had and because I think it's not needed anymore but we're doing a debate on it and I was just wondering if there would be any other reasons that would help my case be stronger.
February 9, 2016

government
Should we abolish or reform the senate in Canada?
February 9, 2016

pre-calculus
x|x-3|<2 I did x(x-3)<2 or x(x-3)<2 and simplified it to x^2-3x<2 and am not sure how to simplify it further and express it in interval notation. Help!
February 8, 2016

Physics
We study the three point charges shown in the figure. They are held at the corners of an equilateral triangle with ℓ = 0.9 m. What is the electric potential energy of the system of three point charges? Use for the three charges q1 = +2Q, q2 = −3Q, and q3 = +Q, ...
February 7, 2016

Physics
A supertanker (mass = 1.90E+8 kg) is moving with a constant velocity. Its engines generate a forward thrust of 7.34E+5 N. Determine the magnitude of the resistive force exerted on the tanker by the water.
February 4, 2016

Physics
A 1550 kg car is traveling with a speed of 12.4 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.3 m? I found the force of the car to be 14700 by using F=ma. I am confused on what to do with the rest of the ...
February 4, 2016

Physics
Three students converge on the last textbook in the store. All three grab it and begin to pull in the directions shown in the above figure. Student A exerts a force of 77.64 N, student B pulls with a force of 18.52 N, and student C pulls with a force of 66.43 N at an angle &#...
February 4, 2016

Physics
A force vector points at an angle of 50.8° above the +x axis. It has a y component of +282 newtons. Calculate the magnitude of the force vector.
February 4, 2016

Physics
A rocket is fired at a speed of 76.4 m/s from ground level, at an angle of 61.0° above the horizontal. The rocket is fired toward an 10.6 m high wall, which is located 26.2 m away. By how much does the rocket clear the top of the wall?
February 4, 2016

science
What is the relationship between the major body systems
February 4, 2016

Physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 10.1 m/s at an angle of 62.4° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed ...
February 3, 2016

physics
I don't understand. derive a general equation that will predict the horizontal range of a projectile that is fired from one vertical position and ends at any other vertical position with an initial velocity, V1, at an angle, pheta, from the horizontal. The equation should ...
February 3, 2016

Math
The question says to simplify it
February 3, 2016

Math
(5 root 3y) over (root10 + 2)
February 3, 2016

Physics
A block of weight 41.8 N is hanging from a rope. The tension in the rope is 24.4 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block? I know the direction would be downwards, since the tension of the rope is less than the weight...
February 2, 2016

Pysics
A block of weight 41.8 N is hanging from a rope. The tension in the rope is 24.4 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block? I know the direction would be downwards, since the tension of the rope is less than the weight...
February 2, 2016

Physics
A block of mass 4.11 kg is hanging from a rope. The tension in the rope is 23.5 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block? F=ma 23.5=4.11a The result was 5.72 and was not correct. Please help!
February 2, 2016

math
What is 34567÷48583829×57383920=
February 2, 2016

Pre-calc
Boat A leaves a dock headed due east at 1:00PM traveling at a speed of 13 mi/hr. At 2:00PM, Boat B leaves the same dock traveling due north at a speed of 20 mi/hr. Find an equation that represents the distance d in miles between the boats and any time t in hours for t≥1...
January 28, 2016

Social Studies/English
Words describing Midewin Thank you!
January 24, 2016

math
A billboard is 4.0 meters by 2.5 meters. A scale diagram of the billboard must fit in a space that is 15 centimeters by 12 centimeters. Write a reasonable scale for the scale diagram.
January 14, 2016

Physics
at the moment when a shot putter releases a 4kg shot the shot is 1.25 m above the ground and travelling at 7 m/s. it reaches a maxium height of 3.7 m above the ground and then falls to the ground. air resistance is negligible and the shot goes straight up and then comes back ...
January 8, 2016

p.e
I think it's D
January 8, 2016

math
$77
January 7, 2016

Math - Ms. Sue, Check!
It's B
January 7, 2016

This math question is confusing.
A set of hemispherical bowls are made so they can be nested for easy storage. The largest bowl has a radius of 30 cm and each successive bowl has a radius 90% of the preceding one. What is the radius of the tenth bowl? there is a picture, sorry i cant put the picture but can ...
January 3, 2016

Website Question
Will the website be supporting pictures soon? like take a pic of your problem then upload it to the website then someone will try and solve it?
January 1, 2016

Math
Solve 2 - 5/x^2 - x - 6 = x + 3/x + 2 . Identify all non-permissible values.
January 1, 2016

physics
Yes very much so Thankyou Henry
December 23, 2015

physics
How would you explain this in 100 or so words so I can get a full comprehension of the question? Much appreciated! Please help me: discuss whether or not it is possible for an object to be increasing in speed as its acceleration is decreasing. For either position you take, use...
December 23, 2015

Physics
oh I apologize. It wasn't loading on my device. Thankyou Mr.Damon
December 23, 2015

Physics
I reposted it again because I wasn't sure if anyone got it.
December 23, 2015

Physics
An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from a cliff and he finds that it takes the rock 4.15 seconds to reach the ground at the base of the cliff. In the second experiment, he throws the rock ...
December 23, 2015

physics 1
An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from a cliff and he finds that it takes the rock 4.15 seconds to reach the ground at the base of the cliff. In the second experiment, he throws the rock ...
December 23, 2015

English
What is the adverbial in the following sentence: Dionne collected shells from the beach
December 19, 2015

physics
What must be the radius of an unbanked (flat) curve so that a car can safely travel at a maximum speed of 39 m/s? The coefficient of static friction is 0.70.
December 18, 2015

physics
What must be the radius of an unbanked (flat) curve so that a car can safely travel at a maximum speed of 39 m/s? The coefficient of static friction is 0.70.
December 18, 2015

Algebra
The area of a rectangular piece of plastic is 70 square millimeters. The perimeter is 34 millimeters. What are the dimensions of the piece of plastic?
December 17, 2015

Math
A number, plus one third itself, plus one eighth of itself, equals 70. What is the number?
December 11, 2015

physics
Water is leaking out of an inverted conical tank at a rate of 10700.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 7.0 meters and the diameter at the top is 4.0 meters. If the water level is rising ...
December 10, 2015

Statistics
A US travel data center survey of 1500 adults found that 42% of the respondents stated that they favor historical sites as vacations find the 95% confidence interval of the troop portion of all adults who favor historical sites as vacation
December 10, 2015

Health
so whats the d*** answer
December 9, 2015

Health
it is D
December 9, 2015

Math
what is the amount of orange juice, written as a fraction grater than 1, that is used in the recipe? 1/2 cup frozen strawberries 1/2 cup frozen peaches 1/4 cup vanilla yogurt 1 1/2 cups orange juice
December 8, 2015

Reading
The metaphor in te fiesta stands is uses to emphasize that the
December 6, 2015

English
Directions: Identity the participle or participle phrase and the words that they modify: The horseman is the ghost of a beheaded soldier who appears at night. I am thinking beheaded is the participle that modifies the soldier or is it a phrase beheaded soldier who appears at ...
December 6, 2015

health
What is an example of a response that someone with BDD might give after receiving a successful cosmetic surgery?
December 4, 2015

Bridgeway Academy
Math A fish aquarium has a capacity of 2 gallons of. If it was already filled with two quarts plus one pint of water, how much water would need to be added to completely fill the tank?
December 4, 2015

math
mjcknm;dmkvfkb k b
December 1, 2015

Chemistry
Calculate the heat released when 1.00L of Cl2 (g) with a density of 1.88g/L reacts with an excess of sodium metal at 25 degrees C and 1 atm to form sodium chloride.
November 30, 2015

Circular Motion Physics
A coin with mass 3.1 grams is at rest atop a wooden block of mass 20 grams. The block is on a spinning platform with a 12 centimeter radius. The coefficients of friction between the platform and the wooden block are μs = 0.75 and μk = 0.64 The coefficient of friction...
November 24, 2015

Physics
A rope which is 7 meters long is laid out on a horizontal table. (a) Assuming that the coefficient of static friction between the rope and the top of the table is 0.5, show that the rope will begin to slide if at least 3 meters of it hangs off the edge. (b) Once it starts to ...
November 24, 2015

MATH HELP
What pattern rule would have a trend line that starts at the same vertical intercept (y-intercept) but has a different steepness?
November 24, 2015

Science
what do you round to find the mass number of the most common isotope of the element?
November 17, 2015

Math-Sue
18*2.5=45 feet 1 yard=3 feet
November 17, 2015

math
Brandon bought a computer monitor that cost $150. He had to pay 6% tax. How much did Brandon pay in tax?
November 17, 2015

French
Did I say this right or is this grammatically correct? _______________________________________ English: However, everything was a dream. French: Cependant , tout était un rêve
November 16, 2015

Physics
A car starts rolling down a 1-in-6 hill (1-in-6 means that for each 6 m traveled along the road, the elevation change is 1 m). How fast is it going when it reaches the bottom after traveling 70 m ? Assume an effective coefficient of friction equal to 0.10
November 15, 2015

Physics
A roller coaster reaches the top of the steepest hill with a speed of 7.0 km/h . It then descends the hill, which is at an average angle of 44 ∘ and is 30.0 m long. Estimate its speed when it reaches the bottom. Assume μk=0.18.
November 15, 2015

French
I numbered each sentence to make it clear so I know which one you refer to that I need to change to make the sentence clear and correct. ____________________________________ 1.) Il était une fois, il y avait une fille qui s’appelait Azirah. 2.) D’abord, elle ...
November 14, 2015

French
Can someone help me fix my sentences or suggest any changes. This has to be in past tense and make sense. I think it make sense overall. The 2nd paragraph contains 5 main conditionals! Did I use those right? .. Any help at all would help me lots!! Thanks. ...
November 14, 2015

Math
Joan has two similar rectangular shaped pieces. One has with 4 inches in length 6 inches and the other has a width of 4 inches period what is the area of the larger rectangle piece. use proportions
November 12, 2015

Math grade 12
thankyou so much! i got the answer with some prompting :)
November 5, 2015

Math grade 12
A lighthouse with a rotating beam is located 500m south of a coastal cliff that runs west to east a) determine a relation for the distance from the lighthouse to the point the light strikes the cliff in terms of the angle of rotation x b) determine an exact expression for this...
November 5, 2015

Physics
A projectile is launched at an angle of 20.0 degrees above the horizontal with an initial speed of 88.1 m/s. The maximum height reached by the projectile will be ____ m.
November 5, 2015

Math
Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6. A.5 square root of 14 minus 7 square root of 12 B.5 square root of 7 minus 7 square root of 6 C.7 square root of 12 minus 5 square root of 14 D.7...
November 4, 2015

Math
Hi I'm having some trouble with this question: The selling price of a mathematics textbook is related to the number of pages in the text. A 300 page book sells for $25 and each additional 10 pages increases the price by $1. - What is the linear equation relating the ...
November 4, 2015

Probability
A card is drawn from a standard deck. What is the probability that the card is less than 7, given that the card is not a face card? (Assume that ace is high, and that aces are not face cards.) A: .4165 B: .3846 C: .2959 D: .6 E: .5 F: None of these
November 3, 2015

Math 5th
What is 9/9-2/3
November 3, 2015

physics
A tire rotates 140 rpm, how many rotations have been completed in 20 seconds?
November 2, 2015

Economics
Secondhand smoke globally kills more than 600,000 people each year, accounting for 1 percent of all deaths worldwide. Researchers estimate that annually secondhand smoke causes about 379,000 deaths from heart disease, 165,000 deaths from lower respiratory disease, 36,900 ...
October 30, 2015

algebra
Find the number of permutations of 5 CDs if you have a total of 23 CDs
October 29, 2015

Chemistry
Arrange the following oxides in order of increasing acidity: As2O5, P2O5, SnO2, N2O5, BaO, and SeO3. (Use the appropriate <, =, or > symbol to separate substances in the list.) I got BaO<SnO_2<As_2O_5<P_2O_5<N_2O_5<SeO_3 but its wrong
October 27, 2015

HEALTH
so whats the answer then ?
October 21, 2015

Math
I don't get how to solve this problem!help 3x(2x^3y) ^6
October 20, 2015

Probability/ Stats
I'm having trouble with this as well, do you go to USF?
October 19, 2015

Statistics
The height of a tree will be measured using a clinometer. For this device, the measurement error has a normal distribution with mean μ=0.00 meter and standard deviation σ=0.05. If the tree is exactly 30 meters tall, what is the probability that the clinometer will ...
October 19, 2015

Chemistry
Imagine that you have a 7.00 L gas tank and a 4.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 136 bar , to what pressure should you fill ...
October 12, 2015

American Literature
In Emily Dickinson's poem, "If you were coming in the fall," why does she not use direct rhyme in the second stanza? If you were coming in the Fall, I'd brush the Summer by With half a smile, and half a spurn, As Housewives do a Fly. If I could see you in a ...
October 10, 2015

Math
Zabato is thinking of a number. Three times the sum of the number and ten is the same as eight times the number. What is Zabatos number? Help! so confused thank you!
October 5, 2015

Physics
A race car moving at 35 m/s is uniformly slowed to a stop in 50 s. Find 1) acceleration, and 2) stopping distance.
October 5, 2015

Social Studies 8 PLEASE HELP!
You're welcome :)
October 2, 2015

Social Studies 8 PLEASE HELP!
N. It's D
October 2, 2015

Math
A block of cheese has a mass of kG it is cut into smaller pieces each weighING 2.5 KI log rams .how much will a shopkeeper collect if he sells each piece of cheese for $12.00
October 1, 2015

Language arts
What did you get on it?? I really need help!
October 1, 2015

Chem
The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.265 M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution?
September 30, 2015

Math?
33.2 °C - 25.1 °C = 8.1 °C Would my answer be 8.1 °C or 8.10°C ?? I have to consider sig figs but idk if 8.10 °C would be correct & if that should be my final answer??
September 30, 2015

Chem (HELP!!)
Test tomorrow too! I don't understand how to do these at all! HELP PLEASE _______________________________ 3.) 11.45 L of milk spilled on the floor. How many gallons spilled? 6.) Suppose 19.0 quarts of water is consumed by a thirsty dessert traveler. How many fluid ounces ...
September 22, 2015

Chem
Jake seems to be having similar questions...
September 22, 2015

Chem
These will give me ANSWERS ONLY.Can someone explaint to me how to do these????
September 22, 2015

Chem
Yes they are Chemistry Questions. I have Chemistry rn and these are the questions that we are doing.
September 22, 2015

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