# 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 49
1. ## math

a plane leaves Vancouver headed for Toronto of a speed of 700 km/hr. Half an hour later a planes leaves toronto headed to vancouver travelling at a spped of 750 km/hr. the distance between vancouver and toronto is 3420 kn. How long after the plane leaves

asked by rose on April 30, 2014

A physical pendulum consists of a body of mass contained in the xy-plane. The moment of inertia of the object about an axis perpendicular to the plane and passing through the object's center of mass is I_cm . The object oscillates in the xy-plane about the

asked by Ramana on November 13, 2013
3. ## Physics

A very narrow beam of white light is incident at 47.50° onto the top surface of a rectangular block of flint glass 13.6 cm thick. The indices of refraction of the glass for red and violet light are 1.649 and 1.678, respectively. 1. Calculate dispersion

asked by Sarah on January 22, 2010

A person whose eyes are H = 1.62 m above the floor stands L =2.24m in front of a vertical plane mirror whose bottom edge is 43 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the

asked by DJ on March 8, 2010
5. ## physics

An enemy plane is flying horizontally at an altitude of 2.0km with a speed of 340m/s.An army man with anti-craft gun on the ground sight the enemy with a muzzle speed at 60m/s .when the enemy plane is directly overhead.find a)at what angle from the

asked by henro on January 16, 2016
6. ## PHYSICS

A 75 kg window cleaner uses a 10 kg ladder that is 7.2 m long. He places one end on the ground 4.5 m from a wall, rests the upper end against a cracked window, and climbs the ladder. He is 5.2 m up along the ladder when the window breaks. Neglect friction

asked by Anonymous on November 14, 2014
7. ## Physics

A 75 kg window cleaner uses a 10 kg ladder that is 7.2 m long. He places one end on the ground 4.5 m from a wall, rests the upper end against a cracked window, and climbs the ladder. He is 5.2 m up along the ladder when the window breaks. Neglect friction

asked by Anonymous on November 14, 2014
8. ## Physics

A 77 kg window cleaner uses a 13 kg ladder that is 7.1 m long. He places one end on the ground 3.8 m from a wall, rests the upper end against a cracked window, and climbs the ladder. He is 3.9 m up along the ladder when the window breaks. Neglect friction

asked by Ali on April 16, 2014
9. ## physics

A missile of mass 1.20 102 kg is fired from a plane of mass 5.50 103 kg initially moving at a speed of 3.05 102 m/s. If the speed of the missile relative to the plane is 1.21 103 m/s, what is the final velocity of the plane?

asked by Anonymous on March 14, 2014
10. ## physics

A missile of mass 1.10 102 kg is fired from a plane of mass 5.50 103 kg initially moving at a speed of 3.15 102 m/s. If the speed of the missile relative to the plane is 1.06 103 m/s, what is the final velocity of the plane?

asked by Anthony on November 29, 2012
11. ## Physics

HW9_1: AXIAL AND TRANSVERSE STRAINS - THE POISSON'S RATIO When no loads are applied, the isotropic elastic block depicted below is a cube of side L0=200 mm. When the distributed load (surface traction) q=200 MPa is applied as shown below, the side length

asked by MAN on July 18, 2013
12. ## physics

A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A

asked by Katie on March 11, 2012
13. ## Physics

A small block of mass m = 1.3 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 54.0 m above the bottom of the loop of radius R = 19.0 m. What is the kinetic energy of the mass at the point A

asked by Daniel on December 24, 2013
14. ## physics

A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A

asked by Katie on March 11, 2012
15. ## Geometry

A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. what is the ground speed of the plane? I could not figure this one out. Please help?

asked by Amber on May 21, 2012
16. ## Physics

A plane with a velocity of 111. 9 meters per second at a maximum rate of 6.8 m/s^2 the plane touches the runaway what's the minimum time before it can come to rest? A=6.8m/s^2 V=111.9m/s t=?

asked by Danielle on September 28, 2014
17. ## math

Brandon is making a model plane at a 1:36 scale. If the length of the actual plane is 60 feet, how many inches long should he make his model?

asked by lid on May 3, 2016
18. ## physics

a plane flying due north at 100 m/s is blown by a. 50 m/s strong wind due east. b. what is the plane's resultant velocity?

asked by ana on July 1, 2017
19. ## trig

A plane is flying due south at a speed of 192 mph. a wind is blowing in at 53 degrees at 13 mph. what is the bearing of the plane?

asked by brittany on March 27, 2014
20. ## math

a plane flies northwards for 430km.if the plane flies eastward for 380km.how far is it from its starting point(ignore its height above the ground)

21. ## math hw

42. Twenty minutes after a plane leaves the airport, it is reported to be 160 miles away. What average speed of the plane in the miles per hour?

asked by David on August 5, 2014
22. ## Math

A jet plane traveled at a constant speed and flew 5460 miles in 12 hours. How many miles did the plane fly in one hour?

asked by Abdiel on August 30, 2017
23. ## physics

A missile is released from a fighter plane traveling horizontally at an altitude of 10000 ft. if the target was hit at 2.09 miles, in mi/h, was the plane traveling?

asked by nano on April 22, 2014

Name the intersection of planes ADE and BEA. A- plane BED B- plane ABC C- line BD D- line AE My choice is D. (Sorry that I could not post an image)

asked by Skye on October 8, 2014
25. ## Trigonometry

A plane at an altitude of 12,000 feet finds the angle of depression for a building ahead of the plane to be 10.4 degrees. With the building still straight ahead, two minutes later the angle of depression is 25.6 degrees. Find of the plane relative to the

asked by Manuel on January 29, 2017
26. ## Special topics in guidance

Josh looked at his block structure and said to the teacher, "I can't finish the tower because Sam took all the skinny blocks. He said he'd punch me if I tried to get them back." This reflects the _______ "building block" dimension of self-esteem. A. worth

asked by Diana on April 28, 2019
27. ## Special topics in guidance

Josh looked at his block structure and said to the teacher, "I can't finish the tower because Sam took all the skinny blocks. He said he'd punch me if I tried to get them back." This reflects the _______ "building block" dimension of self-esteem. A. worth

asked by Diana on April 29, 2019
28. ## Physics

A plane flies due north at 225 km/h. A wind carries it due east at 55 km/h. What are the magnitude and direction of the plane's resultant velocity?

asked by Kiley on November 2, 2008
29. ## Physics

An airplane touches down at a speed of 55.0 m/s on a runway that is 600 m long. The plane can decelerate at a uniform rate of 2.50 m/s^2. Will the plane be able to stop before the end of the runway?

asked by HELP on October 4, 2016
30. ## physics

A pilot wants to fly west (ie., the resultant is west). If the plane has an airspeed of 9.5 m/s, and there is a 25m/s wind blowing north, in what direction must she head the plane?

asked by jane on December 3, 2010
31. ## math

A plane flew due south from a point A, 60°north and 45°east to a point B.The distance covered by the plane was 8000km. Determine the position of B.

asked by john on August 24, 2016
32. ## geometry

A plane is flying at an altitude of 12,000 m. From the pilot, the angle of depression to the airport tower is 32°. How far is the tower from a point directly beneath the plane?

asked by niglet on May 23, 2014
33. ## math

there are two planes. they both leave the airport at 1pm. one plane travels north at 150mph and the other plane travels west at 200mph. how many miles will they be apart at 3pm?

asked by matthew on September 28, 2011
34. ## Math

Hundred.... A plane flew an estimated distance of 800 kilometers. The greatest distance the plane could have flown is..... Kilometres

asked by Anonymous on September 27, 2017
35. ## physics

A wooden block with a volume of 29.59 cm3 is held under water. What is the buoyant force on the block (see sheet 19)? Indicate with a positive (negative) sign whether the force you calculate depends (does not depend) on the density of the wood.

asked by cassie on November 15, 2011
36. ## physics

a bullet of mass 0.04kg moving with a speed of 90m/s enter a heavy wooden block is stopped after a distance of 60cm.What is the avg resistive force exertes by the block or the bullet

asked by ricong on November 12, 2013
37. ## physics

a bullet of mass 0.04kg moving with a speed of 90m/s enter a heavy wooden block is stopped after a distance of 60cm.What is the avg resistive force exertes by the block or the bullet

asked by ricong on November 12, 2013
38. ## Science

Caleb is holding a metal block in his hand. What could he do to decrease the thermal energy of the block? -Cool it (A) -Drop it (B) -Hit it (C) -Melt it (D) PS. I think it is Cool It, but I do not know for sure if it is correct or not. I do not think any

asked by Gabby on November 12, 2014
39. ## Geometry check my answer?

Wilbur Wrong is flying his remote control plane in a circle with a radius of 28 meters. His brother clocks the plane at 16 seconds per revolution. What is the speed of the plane? Express your answer in meters per second. The brothers may be wrong, but you

asked by Skye on January 23, 2011
40. ## physics

A T-bar tow is planned in a new ski area. At any one time, it will be required, to pull a maximum of 80 skiers up a 600-m slope inclined at 15 degrees above the horizontal at a speed of 2.5 m/s. The coefficient of kinetic friction between the skiers skis

asked by bill on March 4, 2010
41. ## Physics

A 10 kg mass is hung from 2 light, inextensible strings such that the vertical string is attached to the top of the block at an angle 60 degree and the other string is attached straight horizontally to the adjacent side of the mass. How do we solve the

asked by Nisha on March 25, 2017
42. ## Physics

On a hot summer day, you've got nothing better to do than play with ice cubes. You are currently sliding a 75 gram Ice Cube up and down a basically frictionless slope. At the bottom of the slope, which is inclined at 30 degrees relative to the horizontal,

asked by Anonymous on December 1, 2016
43. ## Physics

A ball of mass m = 0.2 kg is attached to a (massless) string of length L = 2 m and is undergoing circular motion in the horizontal plane (imagine a wave swinger ride at the amusement park). What should the speed of the mass be for θ to be 39°? What is

asked by James on June 16, 2012
44. ## Physics

A box is on a flat plane and has a force of 16 N applied downward to it at an angle of 55 degrees. The box has a mass of 28 kg. What is the minimum horizontal force F needed to make the box start moving in (Figure 1)? The coefficients of kinetic and static

asked by Alyssa on October 6, 2017
45. ## physics

A 3.90 kg block is in equilibrium on an incline of 27.5◦ . The acceleration of gravity is 9.81 m/s 2 . What is Fn of the incline on the block? Answer in units of N

asked by bf on January 29, 2014
46. ## physics

A 30 kg block slides down a 20° ramp with an acceleration of 1.2 m/s2. What is the coefficient of kinetic friction between the block and the ramp?

asked by HASANNY on October 30, 2010
47. ## brooks

A 3.90 kg block is in equilibrium on an incline of 24.1◦. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline on the block? Answer in units of N.

asked by brooks on November 30, 2010
48. ## Chemistry

A block of wood has a mass of 6.0 g and a volume of 12.0 cm3 whats the density of the block of wood?

asked by Anonymous on October 24, 2017
49. ## physics

A 3.20 kg block is in equilibrium on an incline of 29.6 The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline on the block? Answer in units of N

asked by jay on September 30, 2011
50. ## Physics

A small wooden block floats on water. Will a wooden block with a hole in it also float?

asked by Jay Caruso on August 6, 2017

Wind can affect the speed of an airplane. Suppose a plane is flying round-trip from New York City to San Francisco.The plane has a cruising speed of 300 miles per hour.The wind is blowing from west to east at 30 miles per hour. When the plane flies into

asked by carina on December 23, 2014
52. ## Math

1) A plane is located at C on the diagram. There are two towers located at A and B. The distance between the towers is 7,600 feet, and the angles of elevation are given. a) find BC, the distance from Tower 2 to the plane, to the nearest foot. b) find CD,

asked by Tim on April 11, 2016
53. ## physics

A 0.93 kg block is shot horizontally from a spring, as in the example above, and travels 0.539 m up a long a frictionless ramp before coming to rest and sliding back down. If the ramp makes an angle of 45.0° with respect to the horizontal, and the spring

asked by Sam on May 28, 2012
54. ## Physics

There is a block of mass 1 on a frictionless surface attached to a string. The string goes over a frictionless pulley. The pulley is a hoop with a rotational inertia of I=MR^2. The other end of the string is attached to a hanging block of mass 2. The

asked by Gill Walker on February 3, 2017
55. ## physics

Please can someone show me how to go about this problem? The X-Y plane is illuminated by an electric field of strenght given as E=(24î + 60j + 70k) N/C; the flux through a 1.5m² portion of the illuminated plane is

asked by jay on May 29, 2016
56. ## High School Geometry

I am have a hard time understanding how A and B can be No, but C can be Yes on this problem i.imgur (dot)com/rpJQDf3.png I thought that since AD is not perpendicular to the plane m then no lines shooting off of D onto the plane could be perpendicular.

asked by Ben on November 13, 2013
57. ## Trigonometry

A plane is headed due east with airspeed of 240 mph. if a wind at 40 mph is bloiwing from the north , find the ground speed of the plane.

asked by Roy on September 9, 2012
58. ## Math

A plane passes directly over you head at an altitude of 500 feet. Two seconds later you observe that is angle of elevation is 42 degrees. How far did the plane travel in 2 seconds?

asked by Baby D on March 2, 2009
59. ## physics

a plane flies due north at 225km/h. a wind blows it due east at 55km/h. what is the magnitude and direction of the plane's resultant velocity?

asked by Ashley on October 19, 2013
60. ## Physics

Due to a strong wind from the west of 65 km/h, a plane ends up traveling 330 km/h [W 15 S] relative to the ground. What was the magnitude of the velocity of the plane relative to the air in km/h?

asked by Anonymous on July 8, 2014
61. ## physics

a plane flies due north at 225km/h. a wind blows it due east at 55km/h. what is the magnitude and direction of the plane's resultant velocity?

asked by Ashley on October 19, 2013
62. ## trigo

A plane in calm weather flies east at 20 K.P.H. A 45 K.P.H wind blows from the north. Find the direction and speed required to keep the plane in it's original course and speed.

asked by carl on November 21, 2015
63. ## Physics 11 URGENT STEVE OR BOB OR ANY PHYSICS Guys

An 42 kmph wind blows towards 215 degrees while a plane heads towards 125 degrees at 152kmph. What is the resultant velocity of the plane? tenks vry much!!!!!!!!!!!!!!!!!!!

asked by Urgent Smith on October 16, 2016
64. ## physics pls help

Please can someone show me how to go about this problem? The X-Y plane is illuminated by an electric field of strenght given as E=(24î + 60j + 70k) N/C; the flux through a 1.5m² potion of the illuminated plane is

asked by jay on May 29, 2016
65. ## SCIENCE

____________ used to align wafers with the mask in mask aligner. I. Linear translation in horizontal plane II. Rotational motion III. Linear translation in vertical direction IV. Spiral translation

asked by MEMS on August 27, 2018
66. ## physics

A 400 g marble block has a specific heat of 860 J/kg C deg. If the block is placed in 700 ml of water, the marble changes it temperature by 17 Celsius degrees. Since the specific heat of water is known to be 4186 J/kg C deg, what is the temperature change

asked by Ann on February 19, 2014
67. ## trigonometry

R and S are in the same horizontal plane as the base of a cliff, but R is 132.6 meters nearer it than is S. They find the angles of elevation of the top of the cliff to be 32 degrees and 36 minutes and 63 degrees and 13 minutes. how high is the cliff?

asked by danica on November 2, 2011
68. ## Physics

An aeroplane moving horizontally at 150m/s releases a bomb at a hight of 150m.The bomb hits the intended target.What is the horizontal distance of the plane from the target when the bomb was released?

asked by Siwila on February 27, 2014
69. ## Physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 24.0° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 60.0 kg, and the coefficient of

asked by Lauren on February 3, 2011
70. ## physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 22.2° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 56.0 kg, and the coefficient of

asked by shyne on September 28, 2012
71. ## physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of

asked by Marlee on January 30, 2012
72. ## College Physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 28.2 ° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 46.7 kg, and the coefficient of

asked by Angela on March 15, 2012
73. ## physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of

asked by Amanda on January 30, 2012
74. ## physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of

asked by rachel on January 28, 2012
75. ## Physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 23.0° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of

asked by Tia on September 25, 2015
76. ## Physics HELP!!

two horizontal forces F1 and F2, acting on an object of mass 1.11kg. The magnitude of F1 is 27.56N. The object moves strictly along the horizontal x-axis, which we choose as positive to the right. Find the magnitude of F2 if the object has a horizontal

asked by Angie on October 31, 2012
77. ## Math- Multi-step word problems

A plane traveling from Phoenix to Washington, D.C with a tailwind of 20 miles per hour takes 3 hours. The return trip in the same wind, which is now a headwind, takes the same plane 3 hours and 12 minutes. What is the average speed of the plane in calm

asked by Kitty on October 1, 2014
78. ## Physics

An object slides down a inclined surface in the presence of kinetic friction forces. At the given inclination the kinetic friction force is found to be of magnitude 90 N. Now, the angle that the surface makes with respect to the horizontal is increased and

asked by Nikita on October 22, 2009
79. ## Physics

A stunt motorcyclist is attempting to jump over a river of width 60m using a ramp which is inclined at 30 degrees to the horizontal. Assume the height of the ramp is small enough to be ignored in the calculations. a) What is the minimum speed the stunt

asked by Bonnie on March 2, 2014
80. ## physics

An electron of charge -e and a long straight wire carrying a current I to the right are both in the plane of the page, as shown above. In the position shown, the electron is a distance R from the wire and is moving directly toward it with speed v. What is

asked by roga on May 26, 2014
81. ## Precalculus

1.A plane takes off at an angle of 6 degrees traveling at the rate of 200 feet/second. If it continues on this flight apth at the same speed, how many minutes will it take to reach a n altitude of 8000 feet? 2. A plane takes off at an angle of 5 degrees.

asked by Ms. Suzie on March 2, 2009
82. ## Physics

A motorist is trying to loosen a stubborn lugnut by standing on the end of a wrench. The wrench is inclined 33.8 degrees above the horizontal and the distance from the center of the nut to the end of the wrench is 0.60 m. Assuming the motorist does not

asked by Michelle on March 29, 2015
83. ## Physics - drwls can you help me with this?

A 2.00kg block hangs from a rubber cord, being supported so that the cord is not stretched. The unstretched length of the cord is 0.500m and it's mass is 5.00g.The "spring constant" for the cord is 100N/m. Block is released and stops at lowest point. a)

asked by ~christina~ on February 20, 2008
84. ## physics

How do i find the length of a projection of a vecor A=3x+y+2z on the xy plane? and how do i find the unit vecotr in the xy plane that is perpendiculer to vector A?

asked by larry on October 30, 2014
85. ## Physics - electric potential

an infinite plane of charge has a charge unit area of 2.6 uC/m^2. What is the change in the electric potential between points that are 2.5 and 4.5 from the plane

asked by J Velji on January 24, 2011
86. ## physics

a plane on a runway accelerates from rest for 6.8 seconds. If the runway is 450 meters long, what was the plane's acceleration?

asked by jeneva on October 19, 2011
87. ## physics

How do i find the length of a projection of a vecor A=3x+y+2z on the xy plane? and how do i find the unit vecotr in the xy plane that is perpendiculer to vector A?

asked by larry on October 28, 2014
88. ## Physics

The drawing shows a jet engine suspended beneath the wing of an airplane. The weight W of the engine is 12000 N and acts as shown in the drawing. In flight the engine produces a thrust T of 54200 N that is parallel to the ground. The rotational axis in the

asked by Annie on October 21, 2012
89. ## physics

A uniform string fixed at one end passes over a pulley and then is attached to a hanging object. The string is horizontal between the fixed end and the pulley. When you let the hanging object oscillate in the vertical plane, the fundamental frequency of

asked by Elisa on August 6, 2008
90. ## Calculus

A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5

asked by George on November 12, 2008
91. ## physics

A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal. The girl, boy and the sled have a mass of 160 kg. The coefficient of static friction is 0.28 and the coefficient of kinetic friction

asked by Anonymous on December 11, 2012
92. ## physics

A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal. The girl, boy and the sled have a mass of 160 kg. The coefficient of static friction is 0.28 and the coefficient of kinetic friction

asked by Anonymous on December 11, 2012
93. ## Physics

Two blocks of masses m1 = 4.4 kg and m2 = 4.8 kg are connected by a string as shown in the figure above. Block 1 moves at a constant velocity down the incline 30 degrees) block two is not at incline it is straight. they are attached with a string. a) Find

asked by Micheal on July 13, 2014
94. ## Physics

Two blocks of masses m1 = 4.4 kg and m2 = 4.8 kg are connected by a string as shown in the figure above. Block 1 moves at a constant velocity down the incline 30 degrees) block two is not at incline it is straight. they are attached with a string. a) Find

asked by Micheal on July 13, 2014
95. ## Physics

a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular

asked by Layla Smith on October 14, 2015
96. ## Physics

a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular

asked by parna deljo on October 14, 2015
97. ## Physics

Your younger brother who wishes to be a pilot reads a news article about a search and rescue plane. In this search and rescue operation, an ultra-light aircraft travelling north at 30 km/hr encounters a 40 km/hr crosswind. After explaining to him that a

asked by Annabeth on August 19, 2014
98. ## calculus

A plane flying horizontally at an altitude of 1 mi and a speed of 500 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 2 mi away from the station. I drew a diagram and

asked by Daniel on March 4, 2012
99. ## PHYSICS/MATH

A mass and spring are arranged on a horizontal, frictionless table. The spring constant is k = 450 N/m, and the mass is 5.4 kg. The block is pushed against the spring so that the spring is compressed an amount 0.35 m, and then it is released. Find the

asked by HP on April 12, 2013
100. ## Math

I have a few questions. 1) If a sphere is intersected by a plane that contains the center of the sphere, what would it look like? 2) Can the intersection of a plane and cylinder be a triangle? What is a hemisphere?

asked by Emily on April 18, 2007