# A block weighing 70.7 N rests on a plane inclined at 21.6° to the horizontal. The coefficient of the static and kinetic frictions are 0.23 and 0.12 respectively. What is the minimum magnitude of the force F, parallel to the

22,562 questions, page 143
1. ## Physics 11

I'm trying to draw a ray diagram (the image & mirror are already printed I just need to draw the rays) for a plane mirror. I understand the rules for the most part but I am confused about what angle I should be drawing the first ray from the tip of the

asked by Kayla on June 15, 2017
2. ## Physics

A 2.00 kg box slides down a rough incline plane from a height h of 1.99 m. The box had a speed of 2.77 m/s at the top and a speed of 2.34 m/s at the bottom. Calculate the mechanical energy lost due to friction (as heat, etc.) If I were to calculate the

asked by Ronnie on September 30, 2015
3. ## vectors

3 planes; \$: x+2y-2z-6=0 %: 2x-y+z+8=0 £: 2x-y+2z+3=0 (a)(i)Find the cartesian equation for the plane @ parallel to \$ and containing the point (1,1,2) (ii)Calculate the distance between \$ and @ (b)(i)Find the parametric equations for the line of

asked by Anonymous on April 25, 2010
4. ## Precalculus

I know I posted this before,but I did not learn it your way .....instead I drew a picture and use the law of cosines....is there a way you can show me the work using law of cosines?? A plane flies 30 mi on a bearing of 200 degrees and then turns and flies

asked by Anonymous on December 12, 2013
5. ## math

On each flight, an airplane is filled with 10 quarts of oil. The airline adds an additional (1/2) quart of oil for each planned hour of flying. Write an equation that can be used to determine the planned flying time, h , in hours, for an air plane filled

asked by Anonymous on March 5, 2012
6. ## Vectors

3 planes; \$: x+2y-2z-6=0 %: 2x-y+z+8=0 £: 2x-y+2z+3=0 (a)(i)Find the cartesian equation for the plane @ parallel to \$ and containing the point (1,1,2) (ii)Calculate the distance between \$ and @ (b)(i)Find the parametric equations for the line of

asked by Anonymous on April 25, 2010
7. ## Geometry

Martin wants to use coordinate geometry to prove that the opposite sides of a rectangle are congruent. He places parallelogram ABCD in the coordinate plane so that A is (0, 0), B is (a, 0), C is (a, b), and D is (0, b). What formula can he use to determine

asked by Jeremy on May 19, 2014
8. ## Engineering

Determine the minimimum depth of a water reservoir that will provide a flow rate of 1200 gpm in a 4 inch diameter horizontal pipe that opens to the atmosphere You ought to consider Bernoulli's equation for this, it is in your text. You can model it as

asked by matt on September 10, 2006
9. ## Physics help?

A circular loop in the plane of the paper lies in a 0.78 T magnetic field pointing into the paper. If the loop's diameter changes from 17.8 cm to 6.4 cm in 0.22 s, what is the direction of the induced current? What is the magnitude of the average induced

10. ## Physics

A circular loop in the plane of the paper lies in a 0.78 T magnetic field pointing into the paper. If the loop's diameter changes from 17.8 cm to 6.4 cm in 0.22 s, what is the direction of the induced current? What is the magnitude of the average induced

11. ## Algebra

Beth is a bush pilot in Alaska. On a recent trip, she flew 600 miles with a tail wind in four hours. On the return trip, it took five hours to fly the 600 miles against the wind. Find the speed of the plane with no wind. Could you please explain how to

asked by Delia on June 8, 2009
12. ## Algebra 2 help :)

Any number in the form of a+-bi , where a and b are real numbers and b not equal 0 is considered a pure imaginary number. TRUE OR FALSE The minimum value is the smallest y-value of a function. T RUE OR FALSE i2 = square root of -1. TRUE OR FALSE Complex

asked by Robert on November 20, 2012
13. ## physics

Suppose that 90 g of hot water at a temperature of 75 degrees C is poured into a cavity in a very large block of ice at 0 degrees C. (a) What will be the final temperature of the water in the cavity? (b) What mass of ice must melt in order for the water to

asked by sara on April 7, 2011

Suppose that 90 g of hot water at a temperature of 75 degrees C is poured into a cavity in a very large block of ice at 0 degrees C. (a) What will be the final temperature of the water in the cavity? (b) What mass of ice must melt in order for the water to

asked by Dan on April 8, 2011
15. ## calculus

A plane flies 810 miles from A to B with a bearing of 75 degrees. Then it flies 648 miles from B to C with a bearing of 32 degrees. Find the straightline distance from and bearing from C to A.

asked by ASH on May 15, 2012
16. ## trig/precalc

An airplane with a ground speed of 750 mph and a bearing of N 40 E encounters a wind of 50 mph with a bearing of S 30 E. Find the bearing and ground speed of the plane.

asked by Mia on December 16, 2012
17. ## physics

A object of height 50cm is placed 100cm in front of a plane mirror.find (.A)the image distance. B)the distance between the object and the image . C)the height of the image

asked by sherrif on July 7, 2013
18. ## Medical

Can some one please tell me all the: adjectives adverbs conjunctions nouns prepositions pronouns verbs - in this paragraph? please! Thank you. The patient was brought to the operating room and Bier block anesthesia was performed. The right upper extremity

asked by Rebecca on February 2, 2015
19. ## Physics

How would you use a pulley system with one rope to pull at a single item at two points simultaneously? The free ropes of two block and tackle pulley systems could be joined to pull an object in two places. Or you could just hang a rope over two pulleys on

asked by Jason on June 13, 2007
20. ## Physics

A ball is launched with a velocity of 10 m/s at an angle of 50.0 degrees to the horizontal. The launch point is at the base of a ramp of horizontal length 6.00 m and 3.60 m high. A plateau is located at the top of the ramp. a) Does the ball land on the

asked by Armando on December 18, 2006
21. ## Physics

A volleyball is sent over a net, having been launched at a speed 4.6 m/s at an angle 28.2 degrees above the horizontal, from the ground. What is the maximum height, in m, that the net can be placed such that they ball can make it over?

asked by Bira on April 11, 2016
22. ## Physics

a truck drives up a hill with a 15 degree incline. if the truck has a constant speed of 22 m/s, what are the horizontal and vertical components of the trucks velocity?

asked by Kayla on February 18, 2010
23. ## physics

A 1790-kg car is traveling with a speed of 15.6 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 78.4 m?

asked by brian on January 27, 2011
24. ## physics

A 200g mass attached to a horizontal spring oscillates at a frequency of 2.0 Hz. At one instant, the mass is at x= 5.0cm and has v= -30cm/s. find amplitude

asked by Jessica on February 3, 2012
25. ## physics

A projectile is launched with a speed of 41 m/s at an angle of 55° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight.

asked by Allie on March 11, 2011
26. ## trig

The angle relative to the horizontal from the top of a tree to a point 12 feet from its base(on flat ground) is 30*. Find the height of the tree.

asked by rita on September 30, 2015
27. ## physics

A boy throws a rock with an initial velocity of 2.47 m/s at 30.0 degrees above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory?

asked by Sasha on March 7, 2010
28. ## physics

A 1790-kg car is traveling with a speed of 15.6 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 78.4 m?

asked by Anonymous on January 28, 2011
29. ## Math

Question 11 of 20 5.0 Points The percentage analysis of changes of corresponding items in comparative financial statements is referred to as horizontal analysis. A. True B. Fals A

asked by Angela on December 19, 2013
30. ## physics

a ball is kicked with an initial speed of m/s at an angleof 32.5 above horizontal on the soccer field.determine the maximum height reached by the ball

asked by Anonymous on April 26, 2012
31. ## physics

A 1720-kg car is traveling with a speed of 15.0 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 47.0 m?

asked by Donald on October 9, 2012
32. ## Physics

A 0.020 rubber stopper is swung in a horizontal circle by 0.80 cm thread that makes 30.0 revolution every 20 seconds. a.) what is the stopper's speed? T=? v=(2pi(r))/T

asked by Roy on June 14, 2014
33. ## Calculus

How can I find the horizontal asymptote of: y=e^x/(2e^x+5) i know you have to do the limit as x approaches infinity... but that is about all i know... mulitply the numberator and denominator by e^-x y= e^0/(2e^0 + 5e^-x) y= 1/(2 + 5e^-x) now, take lim as x

asked by Gabriela on April 30, 2007
34. ## physics-important fast

A 1532.9 kg car traveling with a speed of 12.7 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 50.4 m?

asked by jack on December 13, 2013
35. ## pHYSICS`

dETERMINE THE HORIZONTAL FORCE needed to accelerate a 50kg grocery cart from rest to 0.90 m/s in 2.8s if the coefficient of friction between the cart and the floor is 0.20 ?

asked by Dulce on August 11, 2014
36. ## maths

Solution of question about ladder make an angle of 60 degree with the horizontal at foot of ladder is 2.5 metre away from the wall find the length

asked by maths NCERT exampler solution on March 5, 2017
37. ## trignometry

At 350 feet from the base of a cliff, a surveyor sights the top of it at an angle of 300 301. Find the cliff from horizontal.

asked by jessie on October 13, 2015
38. ## Algebra

HELP! I am not sure how I would even start this problem or solve it. A hyperbola with a horizontal transverse axis contains the point at (4, 3). The equations of the asymptotes are y-x=1 and y+x=5 Write an equation for the hyperbola.

asked by Tessa on July 26, 2014
39. ## physics

Rosie (mass 47 kg) pushes a box with a horizontal force of 140 N (31.472 lb) at a speed 15 m/min. What is Rosie's power output?

asked by Nabil on February 20, 2011
40. ## physics

Rosie (mass 47 kg) pushes a box with a horizontal force of 140 N (31.472 lb) at a speed 15 m/min. What is Rosie's power output?

asked by Nabil on February 20, 2011
41. ## science

Net force of 10 newton produces an acceleration of 2mts/sec2 in a body moving over a horizontal surface . What is the mass of the body

asked by Joseph on July 8, 2015
42. ## Physics

"A mass of 3.08kg oscillates on the end of a horizontal spring with a period of 0.323s. What acceleration does the mass experience when its displacement is 2.85m to the right?"

asked by Stuck on July 26, 2010
43. ## Physics

A projectile is launched with a speed of 35 m/s at an angle of 58° above the horizontal. Find the maximum height reached by the projectile during its flight by using conservation of energy. m

asked by smh on March 15, 2012
44. ## physics

three identical blocks are pulled on a horizontal frictionless surface. if the tension in the rope held by the habd is 30N what is the tension in the other ropes?

asked by joy on February 2, 2011
45. ## physics4

A baseball is thrown horizontally from a height of 11.20 m above the ground with a speed of 27.5 m/s. Where is the ball after 0.90 s have elapsed? The ball is 1 a horizontal distance of 2 m from the launch point.

asked by Anonymous on February 16, 2012
46. ## Physics

a box initially moving with a speed of 5m/s along a rough , horizontal floor , it stopped it after 5 m the conffenict friction is 0.3 find the work done by friction .

asked by Mariam on December 4, 2013
47. ## Calculus

Find all points on the graph of the function f(x) = 2 cos x + cos^2 x at which the tangent line is horizontal. (Use n as your arbitrary integer.) smaller y-value (x,y)= larger y-value (x,y)=

asked by Tim on March 9, 2014
48. ## physics

A 1370 kg car is traveling with a speed of 15.0 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 49.5 m?

asked by u/a on February 28, 2012
49. ## physics

What is the magnitude of the frictional force present if a 3kg mass being pulled by a horizontal force of 5 newtons towards the right experiences an acceleration of -0.33 m/sec^2?

asked by bob on October 25, 2018
50. ## physics

A pendulum suspended from the roof of a bus moving along a horizontal track makes an angle of 5° with the vertical,,,determine the acceleration of the bus?

asked by Lemmy on December 22, 2016
51. ## Physics

A projectile is shot from the edge of a cliff 145m above ground level with an initial speed of 65.0 m/s at an angle of 37.0° with the horizontal. How far did the shot go horizontally?

asked by Robert on February 5, 2017
52. ## physics

A golfer drives a ball with a velocity of 42 m/s at an angle of 45 degrees above the horizontal. What is the maximum height (in meters) of the ball above the level fairway?

asked by j on February 14, 2012
53. ## Physics

A horizontal overhead power line carries a current of 500A in west to east direction. What is the magnetic field 1.5m below? What is it's direction?

asked by Shifa on May 4, 2015
54. ## Phsics

A worker pushes a box with a horizontal force of 50.0 N at an angle of 24 degrees over a level distance of 5.0 meters. what net work is done on the box?

asked by JJW on February 5, 2017
55. ## Physics

A uniform solid cylinder of mass M = 6 kg is rolling without slipping along a horizontal surface. The velocity of its center of mass is 27.6 m/s. Calculate its energy

asked by Cyrus on June 9, 2012
56. ## Physics

A crate is initially at rest and then slides down a long inclin that is 30 degrees above the horizontal. If the coefficient of kinetic friction is 0.40, the speed of the crate after 5s is ?

asked by Danielle on March 30, 2016
57. ## physics

boy pulls a toy cart of mass 2 kg with a force of 3 N at an angle of 60° with respect to the horizontal road. What is the acceleration produced by the cart?

asked by kimberly on October 15, 2010
58. ## dynamics

a 200 g object is attached to a 1.5 m long string is whirled around a horizontal force at a speed of 6 m/s. determine the centripetal acceleration of the object.

asked by yel on September 14, 2014
59. ## physics

A baseball is thrown horizontally from a height of 12.00 m above the ground with a speed of 25.5 m/s. Where is the ball after 0.80 s have elapsed? The ball is a horizontal distance of m from the launch point.

asked by jen on February 17, 2012
60. ## Physic

A stone is thrown from the top of a building upward at an angle of 30.0 to the horizontal and with an initial speed of 25.0m/s ,if the heights of the building is 75.0m..How long is the flight?

61. ## physics

A constant force of 58.3 N, directed at 31.7 degrees form horizontal, pulls a mass of 11.9 kg horizontally a distance of 2.77 m. Calculate the work done by the force.

asked by Lara on October 20, 2013
62. ## physics

two ropes attached to I beam (mass 500 kg). ropes make angles of 60 degrees with horizontal. Determine tension in each rope

asked by Anonymous on November 7, 2010
63. ## Physics

A solid ball of mass m rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?

asked by Lacey on November 14, 2010
64. ## Algebra 2

Describe the transformation to the parent function in order to graph the following function, then write the equations of the Vertical and Horizontal Asymptote. Y = _-2___ + 4 x

asked by Nate on February 15, 2018
65. ## algebra 2

Write the inequality in the space provided and graph it on the grid. a.I am not in the second quadrant. b.One point on my border is (-2,-1) It is not one of my solutions c. My border is a horizontal line

asked by dess on October 7, 2010
66. ## Math - Calculus

A 13 foot ladder is sliding down a vertical wall at 1 ft/sec. How fast is the base of this ladder moving on a horizontal ground after 5 seconds?

asked by Wes on May 22, 2011
67. ## Physics

Mark launches a projectile 65 degrees from the horizontal and it strikes the ground a certain distance away. For what other angle of launch at the same speed would the projectile land just as far away?

asked by Kari on January 29, 2015
68. ## physics

A ball is thrown from a cliff upward with a speed of 21 m/s and at an angle of 56 degrees to the horizontal. How high does it go above the cliff to the nearest tenth of a meter?

asked by Jason on January 19, 2012
69. ## chemistry

Why do pure solvents show a level of horizontal curve as solidification occurs, but the curve for the solution sloped downward slightly? Thanks

asked by Tanimura on March 4, 2009
70. ## Physics

A tennis ball is projected with a velocity of 3 meter per second at an angle of 39 degree to the horizontal calculate the time of light in second ( take g to be 9.8 meter per second square)

asked by Omotolani on October 17, 2017
71. ## Algebra 2

Describe the transformation to the parent function in order to graph the following function, then write the equations of the Vertical and Horizontal Asymptote. Y = _1__ + 5 x- 3

asked by Nate on February 15, 2018
72. ## Physics

A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is the magnitude of the horizontal force that P experiences?

asked by Steve on December 7, 2010
73. ## Physics

A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is the magnitude of the horizontal force that P experiences?

asked by Steve on December 6, 2010
74. ## Physics

A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is the magnitude of the horizontal force that P experiences?

asked by Steve on December 6, 2010
75. ## math

crystal wants to build a ramp that will rise 4ft over a horizontal distance of 20ft. how long will the ramp be? round to the nearest tenth.

asked by carol on February 24, 2008
76. ## trig

I need help setting this problem up. A force of 36lb is required to hold a 70lb toolbox on an incline. What angle does the incline make with the horizontal?

asked by IHS on November 23, 2014
77. ## physics

6. A 1580 kg car is traveling with a speed of 15.0 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 50.0 m?

asked by rawaf on August 9, 2011
78. ## Physics

A 1560 kg car is traveling with a speed of 14.5 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 53.3 m?

asked by Kellie on September 21, 2012
79. ## math

in the sample mortgage table presented in your reading material, the horizontal scale that runs all the way from left to right across the top of the table shows the?

asked by pam on January 2, 2010
80. ## physics

A baseball is thrown such that it is in the air for 4 seconds and lands 100 m away. Find the initial vertical and horizontal components of the baseball's velocity.

asked by mia on November 27, 2012
81. ## physics

If M and m are particles connected by light inextensible string. M is held at center and rotated about horizontal axis as M is in equilibrium.What is torque ABOUT ITS CENTER

asked by Anil on October 5, 2012
82. ## physics

f M and m are particles connected by light inextensible string. M is held at center and rotated about horizontal axis as M is in equilibrium.What is torque ABOUT ITS CENTER

asked by anil jha on October 10, 2012
83. ## Physics

Consider a force F = 815 N pulling 3 blocks of masses m1 = 7.94 kg, m2 = 15.3 kg, and m3 = 32.4 kg along a frictionless horizontal surface. Find the acceleration a of the blocks. Answer in units of m/s2.

asked by Priscilla on October 9, 2012
84. ## physics

a lacrosse player slings the ball at an angle of 30 degrees above the horizontal with a speed of 20m/s. How far away should a teammate position herself to catch the ball?

asked by Anonymous on January 26, 2012
85. ## physics

A 1720-kg car is traveling with a speed of 15.0 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 47.0 m?

asked by Donald on October 8, 2012
86. ## precalc

For each: a) Identify the ellipse as horizontal or vertical b) Give the coordinates of 1) The center 2) The major vertices 3) The minor vertices 4) The foci 1) [(x+4)2/64] + (y2/100) = 1 2) [(x-1)2 / 36] + [(y+3)2 / 25] = 1

asked by jim on December 7, 2015
87. ## physics

a ball leaves the club of a golfer at a speed of 33m/s at an angle of 37 with respect to the horizontal. what is its speed when it reach its maximum height?

asked by anda on May 29, 2011
88. ## Physics

A stone is thrown 60 degrees below the horizontal at 22 ft/sec and 20 meters above the ground. Using the energy equations, determine its velocity when it hits the ground.

asked by Matt on February 21, 2016
89. ## Science

Why is is it important to place your arm in a horizontal position rather than letting it hang down at your side when you take your blood pressure? Does everyone's heart create the same pressure? Why or why not?

asked by Jake on January 12, 2008
90. ## physics

A race car travels 40 m/s around a banked (45° with the horizontal) circular (radius = 0.20 km) track. What is the magnitude of the resultant force on the 80-kg driver of this car?

asked by joy on February 26, 2018
91. ## physics

A projectile is launched with a speed of 41 m/s at an angle of 60° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight. m

asked by k on October 9, 2008
92. ## Physics

a projectile is fired with an initial speed of 53 m/s. Find the angle of projection such that the maximum height of the projectile is equal to its horizontal range

asked by Amanda and Travis on September 23, 2012
93. ## Physics

Consider the 56 N weight held by two cables shown below. The left hand cable is horizontal. What is the tension in the cable slanted at an angle of 38degrees

asked by Andy on November 6, 2012
94. ## science asap

Air pressure decreases as altitude increases ^ which one goes on the horizontal axis and which one goes vertical axis? how did you choose this scale? (This is for a line graph)

asked by Anon on April 7, 2013
95. ## physics!

how much work is done by each force acting on vacuum cleaner as it is pulled horizontally 3 m at a constant speed by a force of 50 N at an angle of 30degrees above the horizontal?

asked by kennedy on October 26, 2011
96. ## Physics

In a tug-of-war between two athletes, each pulls on the rope with a force of 365 N. What is the absolute value of the horizontal force that each athlete exert against the ground?

asked by Logan on September 1, 2011
97. ## physics!

how much work is done by each force acting on vacuum cleaner as it is pulled horizontally 3 m at a constant speed by a force of 50 N at an angle of 30degrees above the horizontal?

asked by kennedy on October 26, 2011
98. ## physics

A 0.2 kg mass hangs at the end of a wire. what is the tension in the wire if the ball is whirled around in a horizontal circle with tangential velocity of 5 m/sec

asked by kwaku on November 13, 2010
99. ## physics

The distance from an observer on the plain to the top of a nearby mountain is 5.3km, and the angle between this line and the horizontal is 8.4 degrees. How tall is the mountain?

asked by britt on November 1, 2009
100. ## pre cal

At a distance of 100 feet, the angle of elevation from the horizontal ground to the top of a building is 42 degrees. Find the height of the building

asked by krystal on November 7, 2012