# Posts by Zach

Total # Posts: 447

1. ### phyiscs

A 14.5 kg toy car is driving around a horizontal circular track with a period of 8.0 seconds. The radius of the circular track is 1.1 meters. What is the force of friction in Newtons between the car and the track that is necessary for the car to remain on the track? how do i ...
2. ### physics

A 1500 kg car is rounding a curve with a radius of 204 meters on a level road. The maximum frictional force the road can exert on the tires of the car totals 4439 N. What is the highest speed at which the car can go to round the curve without sliding? Answer in m/s. i need help
3. ### physics

sorry scott but is f the 4439 N
4. ### physics

A 4231 kg car is rounding a curve with a radius of 42 meters on a level road. The car has a velocity of 23.9 m/s. Calculate the acceleration of the car in m/s2. did you guys get 13.6?
5. ### physics

A 4231 kg car is rounding a curve with a radius of 42 meters on a level road. The car has a velocity of 23.9 m/s. Calculate the acceleration of the car in m/s2. did you guys get 13.6?
6. ### physics

would that be the 4439 N

what is f
8. ### physics

A 1500 kg car is rounding a curve with a radius of 204 meters on a level road. The maximum frictional force the road can exert on the tires of the car totals 4439 N. What is the highest speed at which the car can go to round the curve without sliding? Answer in m/s. i need help
9. ### Physics

A stationary 14 kg shell explodes into two pieces. If the 5 kg piece has a velocity of -70 m/s, determine the velocity of the other piece. Do not round your answer until the end! i got 38.89
10. ### physics

A 12801 kg freight train, coasting at 19 m/s, strikes a stationary 2445 kg box car. Determine the "CHANGE IN MOMENTUM" for the freight train if the freight train and the box car couple together. Hint: Draw an "IF Chart" to solve. i got -39005.01
11. ### phyiscs

A train is moving at 17 m/s and has a mass of 2564 kg. A broken down car (loaded with heavy bricks) is stopped on the train track. Upon impact, the train and car get tangled together and travel at a constant velocity of 4 m/s. What is the mass of the broken down car? i got 8333kg
12. ### physics

A 11722 kg freight train, coasting at 11 m/s, strikes a stationary 13855 kg box car. Determine the "CHANGE IN MOMENTUM" for the box car if the freight train and the box car couple together. Hint: Draw an "IF Chart" to solve. (This question has been updated ...
13. ### physics

A 2285 kg freight train, coasting at 13 m/s, strikes a stationary 2465 kg box car. Determine the "CHANGE IN VELOCITY" for the freight train if the freight train and the box car couple together. Hint: Draw an "IF Chart" to solve.
14. ### physics

A 2285 kg freight train, coasting at 13 m/s, strikes a stationary 2465 kg box car. Determine the "CHANGE IN VELOCITY" for the freight train if the freight train and the box car couple together.
15. ### physics

A 12784 kg freight train, coasting at 17 m/s, strikes a stationary 5450 kg box car. Determine the velocity of the train and the box car is they couple together.
16. ### math

It would be 8! because one name can go in 8 different positions, another one can go in 7 different positions, another in 6, and so on. And, 8!=40320
17. ### physics

Bruce the Shark, is swimming very fast, at a constant velocity of 8 m/s. Bruce has a mass of 831 kg and is able to generate a force of 15 N with his tail. Calculate the pmomentum, in kg*m/s of this large shark. answer please
18. ### phyiscs

A train is moving at 13 m/s and has a mass of 2363 kg. A broken down car (loaded with heavy bricks) is stopped on the train track. Upon impact, the train and car get tangled together and travel at a constant velocity of 3 m/s. What is the mass of the broken down car? answer ...
19. ### Physics

A stationary 21 kg shell explodes into two pieces. If the 5 kg piece has a velocity of -53 m/s, determine the velocity of the other piece. answer this please
20. ### physics

A bowling ball is rolling along a table with a constant velocity of 0.7 m/s. The table top is 1.1 meters (H) from the ground in height. Determine the horizontal range of the bowling ball as it falls to the floor. In other words, how far from the edge of the table top will the ...
21. ### Physics

2018-West High School-Trimester 3 Home Announcements Assignments Discussions Grades1 People Pages Files Syllabus Quizzes Modules Class Notebook Google Drive Office 365 Discovery Education Collaborations Flipgrid Physics Projectile Motion Quiz Started: Mar 9 at 8:55am Quiz ...

23. ### Physics

A daredevil tries to launch out of a canon and land safely in a safety net. The canon is set at a launch angle of 49.0 degrees to the ground. The intial launch velocity is 27.3 meters/second. How far away should the safety net be placed from the cannon?
24. ### physics

An airplane with a speed of 88.2 m/s is climbing upward at an angle of 55.6 ° with respect to the horizontal. When the plane's altitude is 523 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...
25. ### physics

A golfer imparts a speed of 40.0 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? (b) What is the longest "hole in one" that the...
26. ### English

The senior class took a trip to Washington, D.C. and Annapolis for their research project. A Compound B Simple C Complex D Compound-Complex
27. ### Math

The map of a biking trail is drawn on a coordinate grid. The trail starts at P(?3, 2) and goes to Q(1, 2). It continues from Q to R(1, ?1) and then to S(8, ?1). What is the total length (in units) of the biking trail? 11 13 14 16
28. ### Chemistry

A sample of gas contains 0.1900 mol of HBr(g) and 9.500×10-2 mol of Cl2(g) and occupies a volume of 11.2 L. The following reaction takes place: 2HBr(g) + Cl2(g)2HCl(g) + Br2(g) Calculate the volume of the sample after the reaction takes place, assuming that the ...

Area is 56
30. ### Mathematics

(-1,-6) The perimeter is 30
31. ### Chemistry

Write a net ionic equation for the reaction that occurs when aqueous solutions of barium hydroxide and hypochlorous acid are combined.
32. ### Chemistry

Write a net ionic equation for the reaction that occurs when aqueous solutions of barium hydroxide and hypochlorous acid are combined.

Oh okay, nvm. My internet lagged so I guess it took awhile for your response. Thank you!

Um...Mrs. Sue? I know you're answering others but I need to know whether it's A.

A?

Suppose 20% of babies born are born early, 50% are born on time, and 30% are born late. A nurse uses a random-number table to find the experimental probability that of 5 births, at least 1 baby will be born early. The digits 0 and 1 represent babies born early. The digits 2, 3...

What did the Mayan caldenders track? 1. Religous celebrations and battles 2. Religous celebrations and the seasons ** 3. Games of pok-ta-tok and the seasons 4. Games of pok-ta-tok and battles The Aztech capital of Tenochtitlan stood on the site of present-day_______. 1. Los ...
39. ### algebra

what is the inverse of the given relation? for the function f(x)=xx-2,find (fof-1)(10)
40. ### Math

The cost of producing x units of a product is given by C(x)=800+120x?120ln(x),x?1. Find the minimum average cost, which is defined as C(x)/x (the total cost divided by the number of units). Minimum Average Cost =
41. ### math

Here is the question: a ball is dropped from a height of 3m and bounces on the ground . At the top of each bounce, the ball eaches 60% of its previous height. Calculate the total distance travelled by the ball when it hits the ground for the fifth time? I know you need the n, ...
42. ### Global History

1. It is often said that Islam is more than a religion, it is a way of life; and followers of Islam belong to an abstract world community. To what extent and in what ways is the Islamic world a distinct and coherent civilization— even to this day? How and why did this occur?

It is B
44. ### Physics

a truck travels up a hill with a 12% incline. the truck has a constnt speed of 22m/s. what is the horizontal componet of the reucks velocity
45. ### Chemistry

0.250 g KCN is dissolved in 50 mL of water, and added to 2 mL of NaOH then mixed with 48mL of water. What is the molar concentration of KCN? I am stuck on this question. So far I have: 0.250gKCN/0.050L= 5M(g/L) Moles of KCN: 5M = mol/0.05L = 0.25mol KCN I am not sure exactly ...
46. ### Chemistry

If 100.0 mL of 0.171 M Na2SO4 are added to 100.0 mL of 0.889 M Pb(NO3)2, how many grams of PbSO4 can be produced? Equation: Na2SO4 + Pb(NO3)2 = 2NaNO3 + PbSO4
47. ### Statistics

Free Throw Freddie is an 80% free throw shooter. At the end of practice he shoots until he makes 10 shots. a) What is the probability that Freddie makes 10 in a row? b) What is the probability that Freddie needs 15 or more attempts? I understand how to do part a), but I'm ...
48. ### Calculus

The following equation defines y as a function of x. −5xy−3x=−6y
49. ### Math

A function f is defined by the equation f(x)=4x−8. Suppose that the state variables T and Q are related by this function according to the mapping f:Q↦T. Suppose that T=3. Use the equation of the function to find the value of Q.
50. ### Math

Player B longest home run distance is 500 feet there are 5280 feet in one mile how many home runs will player B need to hit at his longest distance for the total to be greater than 1 mile
51. ### Math

Player B longest home run distance is 500 feet there are 5280 feet in one mile how many home runs will player B need to hit at his longest distance for the total to be greater than 1 mile
52. ### Probability :(

The first part you have right fundamental counting principal = 4*2*2 = 16 Next we need to find out what are the chances she picks the banana colored bike with a basket = 2/16 or 1/8 and the chance she picks the Atomic Tangerine bike without the horn = 2/16 or 1/8 The key word ...
53. ### Math

The 3 digit number in which the ones digit is three times the tens digit and the tens digit is three times the hundreds digit is?
54. ### math

A 97​-cm board is cut into two pieces. If one piece is 35 cm shorter than the​ other, how long are the two​ pieces?
55. ### Science

1.) when might preserved remains of an entire organism form? A.) when sediment buries the hard part of an organism B.) when an event such as a quick burial or freezing preserves an entire organism ******* C.) when minerals replace parts of an organism D.) when a thin layer ...
56. ### Science HELP PLS

how are earth and venus similar? how is venus different from earth? provide two similarities and two differences
57. ### AP Chemistry

If 400 mL of 3.5 molar HCl solution is added to 200 mL of 2.3 molar NaOH solution, what will be the molarity of NaCl in the resulting solution? Answer in units of M.
58. ### Social Studies

where is the moon when you are in a location experiencing a low tide

Correct.

61. ### Social Studies

how did the europeans feel about the founding of america
62. ### Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
63. ### Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
64. ### Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
65. ### Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
66. ### Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
67. ### physics

You are on a hike in the mountains. You have 3.03 km left to go before your next campsite. The sun will set in 5.2 h. What average speed must you walk to get to camp at sunset? Answer in units of km/h.
68. ### Science

Describe circular motion. Which of Newton's laws helped you describe circular motion Plz I need help fast, thx!!
69. ### Physics

In a perfectly insulating container, what is the equilibrium state (temperature and phases) if one mixes 475 g of water vapor at 140 degrees Celsius with 25 g of ice at 0 degrees Celsius?
70. ### physics

Two blocks are arranged at the ends of a massless string as shown in the figure. The system starts from rest. When the 4.01 kg mass has fallen through 0.412 m, its downward speed is 1.3 m/s. The acceleration of gravity is 9.8 m/s 2 .
71. ### physics

What is the frictional force between the 5.66 kg mass and the table? Answer in units of N.
72. ### physics

What is the magnitude of F? Assume the acceleration due to gravity is 9.8 m/s 2 and the surface is frictionless. Answer in units of N.
73. ### physics

A load of 66 N attached to a spring hanging vertically stretches the spring 8.3 cm. The spring is now placed horizontally on a table and stretched 11 cm. What force is required to stretch it by this amount? Answer in units of N.
74. ### physics

The acceleration of gravity is 10 m/s2. What is the acceleration of a 46 kg pail of cement that is pulled upward (not sideways) with a force of 478 N? Answer in units of m/s2.
75. ### physics

On planet X, an object weighs 18.1 N. On planet B where the magnitude of the free-fall acceleration is 1.28 g (where g = 9.8 m/s 2 is the gravitational acceleration on Earth), the object weighs 37.9 N. The acceleration of gravity is 9.8 m/s 2 . What is the mass of the object ...
76. ### AP Chemistry

The reaction of 5.1 grams of fluorine with excess chlorine produced 4.5 grams of ClF3. What percent yield of ClF3 was obtained? Answer in unites of %
77. ### math

The diagonal of a rectangular storage room is 4 yards long. If its length is 2 times its width, find the dimensions of the room.
78. ### physics

Your car is stuck in a mud hole. You are alone but you have a long strong rope. having studied physics you tie the rope tautly to a telephone pole and pull on it sideways at the midpoint as shown. Find the force exerted by the rope on the car when the anle is 3.2 and you are ...
79. ### physics

The distance between two telephone poles is 31 m. When a 1.54kg bird lands on the telephone wire midway between the poles, the wire sags 0.165 m. The acceleration of gravity is 9.8 m/s^2. How much tension in the wire does the bird produce? Ignore the weight of the wire.
80. ### Chem

Sapling wanted the two's
81. ### Science

Anon is 100% correct.
82. ### Math

I’m working on it half to do the test myself

84. ### Physics

The 1.1 kg physics book is connected by a string to a 250 g coffee cup. The book is given a push up the slope and released with a speed of 2.9 m/s . The coefficients of friction are μs =0.50 and μk =0.20. What Distance does it travel up the slope? I drew a free body ...
85. ### Shalee ^~^

Thanks bruh, I got 100%!
86. ### physics

A 57.5-kg runner has a speed of 5.80 m/s at one instant during a long-distance event. (a) What is the runner's kinetic energy at this instant? 967.15 J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? im having trouble ...
87. ### English

What are the differences between mood and tone?
88. ### Social Stuides

What is one way that the United Nations shapes world affairs
89. ### Social Stuides

Write at least one way that the United States has influenced another nation-state and at least one way that another nation-state has influenced the United States.
90. ### physics

A knight sits on a castle wall during a siege.To while away the time, he notes that boulders catapulted from below land on the top of his wall with a vertical velocity of 9.9 m/s. If he is 35 m above the catapult, what is the initial velocity of the boulders? Theacceleration ...
91. ### physics

A ball is thrown straight up and reaches a maximum height of 7.16 m. What was its initial speed? The acceleration of gravity is 9.8 m/s Answer in units of m/s.
92. ### 4th grade math word problem

tim is 27 years older than tom. the sum of their ages is 337. how old is ti,?
93. ### Biology

The answer is waters high specific heat. the specific heat is a measure of how well a substance resists increasing temperature. the higher the number, the better it is at resisting that heat. So on a hot day, the water wont just cook the fish
94. ### heith

Shirley has two containers of water for a camping trip. One container holds 2 times as much as the other. The total amount of water is 30 gallons. How much water is in each container?

96. ### science

A ball with a mass of 3.47 kg is rolling along at 17.4 m/s. If you apply a force of 52.2 N to it, how many seconds will it take to stop?
97. ### chemistry

How many grams of solid ammonium chloride should be added to 1.50 L of a 0.224 M ammonia solution to prepare a buffer with a pH of 8.720 ?
98. ### College Algebra

A rectangular garden next to a building is to be fenced on three sides. Fencing for the side parallel to the building costs \$60 per foot, and material for the other two sides costs \$20 per foot. If \$1,500 is to be spent on fencing, what are the dimensions of the garden with ...
99. ### Algebra 2

solve 3 square root 2x +1 =3 2x +1 under the sqaure
100. ### Algebra 2

solve square root 5-2x + 5 =12 5-2x under the sqaure
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