Saturday

November 28, 2015
Number of results: 29,852

**physics**

a mountain climber jumps a 3.0 m wide crevasse by leaping horizontally with a speed of 8.0 m/s. (a) if the climber's direction of motion on landing is -45 degrees, what is the height the difference between the two sides of the crevasse? (b) where does the climber land?
*December 13, 2011 by taylor*

**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 17 m/s at an angle of 50° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. ...
*September 5, 2010 by demi *

**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 21 m/s at an angle of 58° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. ...
*September 20, 2010 by Emily *

**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 23 m/s at an angle of 69° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. ...
*October 11, 2010 by Sarah*

**Physics**

A mountain climber dangles his water bottle and feels the bottle makes an angle of 25 degrees with respect to the vertical line. If his acceleration takes 18 seconds, calculate the speed of the climber.
*March 14, 2014 by Bert*

**Algebra**

A mountain climber ascends a mountain to its peak. The peak is 12,740 ft above sea level. The climber then descends 200 ft to meet a fellow climber. Find the climber's elevation above sea level after meeting the other climber. 12,540 ft above sea level****** 12,540 ft below ...
*August 31, 2015 by Trish*

**Physics**

A 80 kg climber is standing horizontally on a perfectly vertical cliff face. The climber is 1.8 m tall and is attached by a 2 m long rope fastened around their middle to a point on the cliff above them. What is the normal force the cliff face exerts on the climber in Newtons? ...
*March 18, 2013 by Stranger*

**Could you please check my answers.**

1) - 1.8 - 3.9 a- -2.1 b- 5.7 c- 2.1 d- -5.7* 2) -7 = 5 a- -2* b)12 c) -12 d) 2 3) -6.1 + 1.7 a-7.8* b- -4.4 c- -7.8 d- 4.4 4) A mountain climber ascends a mountain to it peak. The peak is 12,740 ft above sea level. The climber then descends 200 ft. to meet a fellow climber. ...
*August 15, 2014 by Steve*

**math**

A mountain climber on Mt. Everest is at 29,035 feet above sea level. A stone at the bottom of the Dead Sea is at 1,349 ft below sea level. What pigsis the difference in elevation between the mountain climber and the stone?
*April 17, 2013 by karolina vida*

**math**

A mountain climber on Mt. Everest is at 29,035 ft above sea level. A stone at the bottom of the dead sea is at 1,349 ft below sea level. What is the difference in elevation between the mountain climber and the stone? please can someone help me?
*March 25, 2015 by #HOMEWORK*

**math**

A mountain climber on Mt. Everest is at 29,035 feet above sea level. A stone at the bottom of the Dead Sea is at 1,349 ft below sea level. What is the difference in elevation between the mountain climber and the stone
*April 17, 2013 by karolina vida*

**math**

A mountain climber on Mt. Everest is at 29,035 feet above sea level. A stone at the bottom of the Dead Sea is at 1,349 ft below sea level. What is the difference in elevation between the mountain climber and the stone?
*April 17, 2013 by karolina vida*

**NEED HELP ASAP !!**

A mountain climber on Mt. Everest is at 29,035 ft above sea level a stone at the bottom of the Dead Sea is at 1,349 ft below sea level what is the difference in elevation between the mountain climber and the stone
*March 4, 2014 by A=Awesome*

**Math Ms.Sue please**

1. 2/3 - 5/4 -3 -3/12 23/12 -17/12 2. -6.1 + 1.7 7.8 -4.4 -7.8 4.4 3. -1.8 - 3.9 -2.1 5.7 2.1 -5.7 4. A mountain climber ascends a mountain to its peak. The peak is 12,740 feet above sea level. The climber then descends 200 feet to meet a fellow climber. Find te climber's ...
*September 12, 2013 by Charlotte*

**pre-calculus**

h(t)=15t + 1200 is a function that models the motion of a mountain climber. h(t) is his height above sea level at time t in minutes. 1a) the coefficient on t is 15. what does it tell you about the motion of the mountain climber? 1b) what does it tell you about the graph of h(t...
*August 27, 2015 by d*

**physics**

7. Consider the 52.0-kg mountain climber in Figure 5.22. (a) Find the tension in the rope and the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume ...
*June 11, 2015 by pari*

**Physics**

Consider the 52.0-kg mountain climber in the figure to the right. Find (a) the tension in the rope and (b) the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, ...
*June 3, 2014 by Anonymous*

**Physics**

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 575 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the ...
*October 14, 2012 by Jiim*

**Physics**

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 554 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the ...
*December 12, 2012 by shine*

**Physics**

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 530 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the ...
*April 7, 2015 by Kristyn*

**physics**

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 575 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the ...
*October 6, 2015 by Anonymous*

**physics**

the shape of sugarloaf mt. in rio de janeiro, brazil is such that if you were to kick a soccer ball hard enough, it could land near the base of the mountain without hitting the mountain's side. Suppose the ball is kicked horizontally with an initial speed of 9.37 m/s. if the ...
*September 29, 2009 by Zoomba21*

**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 16 m/s at an angle of 55° above the horizontal. The kit is caught right at the peak of the its trajectory. What is the vertical height between the ...
*October 14, 2013 by Bonnie*

**physics**

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 620 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the ...
*February 28, 2012 by u/a*

**Physics HELP!**

A mountaineer estimates the depth of a crevasse by dropping a stone and listening for sound when the stone hits the bottom. The speed of sound in air is 340m/s. If the sound is heard 10s after the stone is dropped, what is the depth of the crevasse? Do you find velocity first...
*October 2, 2008 by Ella*

**Hs Math**

on the moon, the acceleration due to gravity is 1.6m/sec^2 a. if a rock is dropped into a crevasse, how fast will it be going just before it hits bottom 30sec later? b. how far below the point of release is the bottom of the crevasse? c. if instead of being released from rest...
*November 6, 2008 by ET*

**Physics**

A rock climber of mass 55 kg is hanging suspended from a rope tied to another climber of mass 65 kg on a horizontal cliff ledge. If the coefficient of kinetic friction between the climber on the ledge and the ledge is 0.45, what is the net acceleration of the climber on the ...
*July 15, 2012 by bob*

**sound and hearing**

An excited child in a campground lets out a yell. Her parent, 1.31 m away, hears it as a 89.3-dB sound. A climber sits 701 m away from the child, on top of a nearby mountain. How loud does the yell sound to the climber? (in dB) A: 34.731 dB this is my first question here :)I ...
*November 20, 2012 by bülent*

**physcial science**

How to solve for Jane (mass 40 kg),standing on slippery ice, catches her leaping dog (mass 15 kg) moving horizontally at 3 m/s. What is the speed of Jane and her dog after the catch?
*February 12, 2011 by Cindy*

**Physics**

Lillian (mass 46.0 Kg) standing on slippery ice catches her leaping dog (mass 15 kg) moving horizontally at 4.0 m/s. What is the speed of lillian and her dog after the catch. momentumdoginitial=momenumCombinationafter 15*4=(46 +15)v solve for v.
*September 27, 2006 by jennifer*

**Physics**

Harry jumps horizontally from the top of a building that is 20.0 m high. He hopes to reach a swimming pool that is at the bottom of the building, 14 m horizontally from the edge the building. If he is to reach the pool, what must his jumping speed be?
*November 2, 2010 by Mallory*

**physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...
*September 26, 2009 by DJ*

**Physics - HELP**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...
*September 27, 2009 by Anonymous*

**physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...
*September 27, 2009 by DJ*

**physics**

With the forces in equilibrium if a stationary climber is using a rope which is 60 degrees to the vertical, the rock face is at 30 degrees to the vertical, and the weight of the climber in cluding equipment is 850N. What is the tension on the rope? What is the force exerted on...
*April 18, 2011 by Declan*

**Physical Science**

Judy (mass 45.0 kg), standing on slippery ice, catches her leaping dog, Atti (mass 12kg), moving horizontally at 4.0 m/s. Use the conservation of momentum to find the speed of Judy and her dog after the catch.
*September 19, 2013 by Shannon*

**math **

on the moon, the acceleration due to gravity is 1.6m/ sec 1. If instead of being released from rest, the rock is thrown into the crevasse from the same point with a downward velocty of 4m/sec, when will it hit the bottom and how fast will it be going when it does 2. how far ...
*November 11, 2009 by sarah*

**Physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. Assume the plane is traveling horizontally with a speed of 195 km/h (54.2 m/s). Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of...
*September 17, 2011 by Bridge*

**Physics**

An 80- quarterback jumps straight up in the air right before throwing a 0.43- football horizontally at 15 . How fast will he be moving backward just after releasing the ball? Suppose that the quarterback takes 0.30 to return to the ground after throwing the ball. How far d ...
*April 12, 2009 by Lola PLEASE HELP!*

**math**

Driving down a mountain, torn finds that he has descended 1800 ft in elevation by the time he is 3.25mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. 2,175
*February 14, 2007 by stacy*

**Physics**

In principle, anytime someone jumps up, the earth moves in the opposite direction. To see why we are unaware of this motion, calculate the recoil speed of the earth when a 65.0 kg person jumps upward at a speed of 1.70 m/s. v=?
*March 8, 2011 by Mely*

**Physics **

An enemy ship is on the western side of a mountain island. The enemy ship can maneuver to within 2520 m of the 1850 m high mountain peak and can shoot projectiles with an initial speed of 260 m/s. If the eastern shoreline is horizontally 305 m from the peak, what is the ...
*February 7, 2012 by Jeremy *

**physics**

ok so I really don't get 2d collisions and I thought I knew how to do this one but I have no idea: A 104 kg baseball player jumps up verticlly to catch a baseball of mass .254 kg traveling horizontally with a speed of 28.6 m/s. If the vertical speed of the player is .258 m/s ...
*December 16, 2007 by Ty*

**physics**

ok so I really don't get 2d collisions and I thought I knew how to do this one but I have no idea: A 104 kg baseball player jumps up verticlly to catch a baseball of mass .254 kg traveling horizontally with a speed of 28.6 m/s. If the vertical speed of the player is .258 m/s ...
*December 16, 2007 by Ty*

**physics**

An enemy ship is on the east side of a mountain island, as shown in the figure. The enemy ship has maneuvered to within d1 = 2153 m of the h = 1690 m high mountain peak and can shoot projectiles with an initial speed of vi = 247 m/s. If the western shoreline is horizontally d2...
*February 16, 2011 by Anonymous*

**physics**

An enemy ship is on the east side of a mountain island, as shown in the figure. The enemy ship has maneuvered to within d1 = 2153 m of the h = 1690 m high mountain peak and can shoot projectiles with an initial speed of vi = 247 m/s. If the western shoreline is horizontally d2...
*February 18, 2011 by Anonymous*

**physics**

A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus Earth) when the climber is at the top. Find ...
*May 11, 2011 by Merlin*

**Physics **

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge H = 231 m below. If the plane is traveling horizontally with a speed of 227 km/h (63.1 m/s), how far in advance of the recipients (horizontal distance) must the goods be dropped? 433m Suppose...
*February 7, 2012 by Kim*

**physics**

A daredevil jumps a canyon 12 m wide . To do so , he drives a car up a 19 degree incline. a) What is the minimum speed must he achieve to clear the canyon ? b) If the daredevil jumps at this minimum speed, what will his speed be when he reaches the other side ?
*November 14, 2011 by lala mon *

**Physics**

A mountain climber is about to haul up a 50m length of hanging rope. How much work will it take if the rope weighs .624 N/m?
*May 2, 2014 by T.J.*

**physics**

Suppose the ball is kicked horizontally with an initial speed of 9.37m/s. If the ball travels a horizontal distance of distnace 85 meters, how tall is the mountain?
*November 14, 2011 by Brooke*

**Honors Pre-Calculus**

You are traveling in a car toward a certain mountain at a speed of 80km/hr. The apparent size of the mountain is .5degrees. Fifteen minutes later the same mountain has an apparent size of 1 degree. About how tall is the mountain? I believe you must convert the degrees to ...
*September 17, 2007 by Anonymous*

**Taxation law**

Hilary is a well-known mountain climber. The Daily Terror newspaper offers her $10,000 for her life story, if she will write it. Without the assistance of a ghost writer, she writes a story and assigns all her right, title and interest in the copyright for $10,000 to the Daily...
*August 11, 2015 by Holmes*

**physics**

A mountain climber friend with a mass of 80kg ponders the idea of attaching a helium-filled balloon to himself to effectively reduce his weight by 25% when he climbs. He wonders what the approximate size of such baloon would be.
*March 26, 2010 by Gail*

**physics**

Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 3.10 , while Milada jumps horizontally with an initial speed of 93.0 .
*November 6, 2011 by ale*

**physical**

Two mountain climbers are working their way up a glacier when one falls into a crevasse. The icy slope can be considered frictionless. Sue's weight is pulling Paul up the 45* slope. If Sue's mass is 66kg and if she falls 2m in 10s starting from rest, find the tension in the ...
*October 13, 2013 by Ywome*

**PreCal**

Angel of Elevation: You are skiing down a mountain with a vertical height of 1500 feet. The distance from the top of the mountain to the base is 3000 feet. What is the angle of elevation from the base to the top of the mountain? Traveling at 25 miles per hour, how long does it...
*January 18, 2012 by sammy*

**physics**

The highest mountain on Mars is Olympus Mons, rising 38569 meters above the Martian surface. If we were to throw an object horizontally off the mountain top, how long would it take to reach the surface? (Ignore atmospheric drag forces and use gMars = 3.72 m/s2.)
*June 10, 2010 by brandon*

**5th grade math**

Three frogs had a race on a 1000 chart. Freaky Frog took 30 jumps of 25, Frogurt Frog took 30 jumps of 20, and Frannie Frog took 120 jumps of 5. Who was ahead?_______________________ Help! Assuming the distance of the jump is the same for each frog. 30 jumps x 25/jump = ?? 30 ...
*September 25, 2006 by Aliah*

**I need help.,math**

Is this correct or wrong? Technology. Driving down a mountain, Tom finds that he has descended 1800ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. so i would change miles to feet ...
*January 15, 2007 by jasmine20*

**physics**

Two mountain climbers are working their way up a glacier when one falls into a crevasse. The icy slope can be considered frictionless. Sue's (the one who fell) weight is pulling Paul up the 45 degree slope. If Sue's mass is 66 kg and if she falls 2 min 10 s (starting from rest...
*October 9, 2012 by sam*

**Algebra I**

Driving down a mountain, Tom finds that he has descended 1800 ft. in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. slope is descent divided by distance from base. Change one of the ...
*August 21, 2007 by Sally*

**physics**

the length of nylon rope from which a mountain climber is suspended has a force constant of 1.40*10^4. how much would this rope stretch to break the climbers fall if he freefall 2.00 m before the rope run out of slack
*May 4, 2014 by sara*

**Physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge H = 231 m below. If the plane is traveling horizontally with a speed of 227 km/h (63.1 m/s), how far in advance of the recipients (horizontal distance) must the goods be dropped? Suppose, ...
*February 5, 2012 by Bella*

**Physics**

Mountain pull. A large mountain can slightly affect the direction of “down” as determined by a plumb line. Assume that we can model a mountain as a sphere of radius R = 3.00 km and density (mass per unit volume) 2.6 × 103 kg/m3. Assume also that we hang a 0.250 m plumb line at...
*May 2, 2014 by Sandra*

**Physics**

A small first aid kit is dropped by a rock climber who is descending steadily at 1.5 m/s. A.)After 3.1s, how far is the kit below the climber?
*February 14, 2011 by Shannon*

**algebra 2**

A skier has decided that on each trip down a slope, she will do 2 more jumps than before. On her first trip she did 6 jumps. Derive the sigma notation that shows how many total jumps she attempts from her fourth trip down the hill through her twelfth trip. Then solve for how ...
*October 20, 2014 by Please Help Me*

**Math**

A skier has decided that on each trip down a slope, she will do 2 more jumps than before. On her first trip she did 6 jumps. Derive the sigma notation that shows how many total jumps she attempts from her fourth trip down the hill through her twelfth trip. Then solve for how ...
*October 20, 2014 by Take a look Please*

**physics**

Q. A person wants to shoot a rocket off of a mountain 3.26 km high so that the rocket, when shot at 31.3¡Æ above the horizontal from the very top of the mountain, lands at the foot of the mountain 9.37 km (horizontal distance) away. a) What initial speed must the rocket have...
*October 17, 2010 by Lyn*

**Physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. Assume the plane is traveling horizontally with a speed of 195 km/h (54.2 m/s). How far in advance of the recipients (horizontal distance) must the goods be dropped
*September 17, 2011 by Bridge*

**Physics**

Can someone please help me sort out this problem? "A boy standing at the equator jumps vertically into the air. Does he land in the exact same spot after landing?" I'm thinking that when he jumps he is also moving horizontally with the earth and so he will land in the same ...
*March 11, 2009 by Brigid*

**Physics **

An enemy ship is on the western side of a mountain island. The enemy ship can maneuver to within 2520 m of the 1850 m high mountain peak and can shoot projectiles with an initial speed of 260 m/s. If the eastern shoreline is horizontally 305 m from the peak, what is the ...
*February 5, 2012 by Jenny*

**PHYSICS**

A DAREDEVIL JUMPS A CANYON 12 METERS WIDE. TO DO SO HE DRIVES A CAR UP A 15 DEGREE INCLINE. a. WHAT IS THE MINIMUM SPEED HE MUST ACHIEVE IN ORDER TO CLEAR THE CANYON? B. IF THE DAREDEVIL JUMPS AT THIS MINIMUM SPEED WHAT WILL HIS SPEED BE WHRN HE REACHES THE OTHER SIDE? Write ...
*November 1, 2006 by Jill Hefner*

**physics**

You foolishly attempt to jump across a crevasse whose far side is W = 2.93 m away horizontally, and H = 1.35 m lower vertically. What minimum horizontal velocity must you have to make it to the other side? Assuming you have the minimum velocity you just calculated in the ...
*September 25, 2012 by layla*

**Algebra 1**

Driving down a mountain, Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. slope= descent/horizontal change 1800 feet to miles, there are 5280 ...
*February 3, 2007 by Julie*

**Physics**

Hi, I've been stuck on this for days! I'd love if I can get some help. Two unfortunate climbers, roped together, are sliding freely down an icy mountainside. The upper climber (mass 80kg ) is on a slope at 16∘ to the horizontal, but the lower climber (mass 65kg ) has ...
*April 3, 2015 by Tommy*

**Physics**

A trapeze artist, starting from rest, swings downward on the bar, lets go at the bottom of the swing, and falls freely to the net. An assistant, standing on the same platform as the trapeze artist, jumps from rest straight downward. Friction and air resistance are negligible...
*May 8, 2007 by Papito*

**physics**

An inquisitive physics student and mountain climber climbs a 50.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.08 m/s downward. (a) ...
*October 10, 2009 by Jamie*

**physics**

A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
*October 24, 2011 by Anonymous*

**physics**

A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
*October 24, 2011 by Anonymous*

**Physics**

Hi guys, need help with this problem for physics and im having trouble visualizing it. Kathy and mountain climber climbs a 55.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. ...
*October 9, 2008 by Sam*

**physics**

A small first aid kit is dropped by a rock climber who is descending at a constant velocity of - 1.3m/s. a) Sketch the velocity vs. time graph for both the climber and her first aid kit and paste your sketch in the space below. b) After 1.5 seconds, what is the velocity of ...
*October 23, 2010 by grace*

**Math**

a surveyor is 3 miles from a mountain. The angle of elevation from the ground to the top of the mountain is 15 degrees. What is the height of the mountain?
*April 18, 2015 by Kenny*

**physics**

Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 3.50 s, while Milada jumps horizontally with an initial speed of 95.0 cm/s. How far from the base of the cliff will Milada hit the ground?
*July 28, 2011 by ichigo*

**physics**

. An inquisitive physics student and mountain climber climbs a 50.0-m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.00 m/s. (a) How long...
*February 24, 2012 by ai*

**PHYSICS!!!**

A climber with a mass of 75 kg is attached to a 6.5 m rope with a cross sectional area of 3.5×10−4 m2. When the climber hangs from the rope, it stretches 3.4×10−3 m. What is the Young's modulus of the rope? Please help me :)
*June 9, 2012 by Kaelyn*

**physics**

A mountain-climber friend with a mass of 82 kg ponders the idea of attaching a helium-filled balloon to himself to effectively reduce his weight by 25% when he climbs. He wonders what the approximate size of such a balloon would be. Hearing of your physics skills, he asks you...
*March 28, 2012 by Kristie*

**physics**

A mountain-climber friend with a mass of 82 kg ponders the idea of attaching a helium-filled balloon to himself to effectively reduce his weight by 25% when he climbs. He wonders what the approximate size of such a balloon would be. Hearing of your physics skills, he asks you...
*March 29, 2012 by Jim*

**physics**

A mountain-climber friend with a mass of 82 kg ponders the idea of attaching a helium-filled balloon to himself to effectively reduce his weight by 25% when he climbs. He wonders what the approximate size of such a balloon would be. Hearing of your physics skills, he asks you...
*April 1, 2012 by christy*

**physics**

In one day, a 75-kg mountain climber ascends from the 1500-m level on a vertical cli to the top at 2400 m. The next day, she descends from the top to the base of the cli, which is at an elevation of 1350 m. What is her change in gravitational potential energy (a) on the ...
*August 17, 2012 by zianna*

**Trigonometry**

Height of a mountain While traveling across flat land, you notice a mountain directly in front of you. The angle of elevation to the peak is 2.5°. After you drive 18 miles closer to the mountain, the angle of elevation is 10°. Approximate the height of the mountain.
*February 4, 2013 by AwesomeGuy*

**engineering**

Your friend, a 75 kg mountain climber is suspended from a cliff by a rope. Calculate the tension in the rope, in Newtons, when you lift your friend to safety. If the rope can withstand 1.25 kN of stress per square centimeter of cross-sectional area, what minimum diameter of ...
*January 17, 2013 by amanda*

**Physics URGENT!!!**

Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who is initially at rest, hops on her back, and ...
*October 15, 2012 by Anonymous*

**physics!**

In a scene in an action movie, a stuntman jumps from the top of one building to the top of another building 4.0m away. After a running start, he leaps at an angle of 15 degrees with respect to the flat foor while traveling at a speed of 5.0 m/s. will he make it to the other ...
*December 9, 2008 by emily*

**physics**

An 75 kg quarterback jumps straight up in the air right before throwing a 0.43 kg football horizontally at 11 m/s. How fast will he be moving backward just after releasing the ball?
*April 18, 2010 by Sandra*

**physics**

A 82.5-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, when stretched, behaves like a spring with a spring constant of 1.82 x 103 N/m. He accidentally slips and falls freely for 0.739 m before the rope runs out of slack. How ...
*November 13, 2012 by Michelle*

**Physics**

A 74.2-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, when stretched, behaves like a spring with a spring constant of 1.62 x 103 N/m. He accidentally slips and falls freely for 0.959 m before the rope runs out of slack. How ...
*May 2, 2014 by Elle*

**math**

if someone could please help that would be muchly appreciated. A group of mountain climbers are using trigonometry to find the height of a mountain located in the rockies. From point A, which is due west of the mountain, the angle of elevation to the top is 56 degrees. From ...
*April 3, 2010 by deborah*

**math**

angle of elevation of the top of a mountain to a man is 45degree.if we walk along a slope of 30 degree of the mountain 100 meters then the angle of elevation of the top of mountain becomes 60 degree.find the height of the mountain.
*August 8, 2010 by subhradeep*

**math**

A plane flying a straight course observes a mountain at a bearing of 32.6° to the right of its course. At that time the plane is 6 km from the mountain. A short time later, the bearing to the mountain becomes 42.6°. How far is the plane from the mountain when the second ...
*March 31, 2010 by pepe*