A 751 kg block is pushed on the slope of a 30◦ frictionless inclined plane to give it an initial speed of 50 cm/s along the slope when the block is 1.3 m from the bottom of the incline. The

18,605 results, page 78

bailey uses the results from an experiment to calculate the probability of each color of block being chosen from a bucket. he says P(red)=35%, P(blue)=45%, and P(yellow)=20%. jarod uses theoretical probability because he knows how many of each color block

asked by math help on February 1, 2014
2. Physics

A string passes over a frictionless, massless pulley attached to the ceiling. A mass m1=15.0 kg hangs from one end of this string, and a second massless, frictionless pulley hangs from the other end of the string. A second string passes over the second

asked by Sandra on February 21, 2009

A 230 kg steel crate is being pushed along a cement floor. The force of friction is 480 N to the left and the applied force is 1860 N to the right. What is the normal force? A. 480 N down B. 480 N up C. 2300 N down D. 2300 N up

asked by Beth on June 3, 2016
4. physics

If Frankie the kangaroo climbed out of the crate and pushed the crate with a mighty 12 newtons of force against the efforts of Fred and the man (each applying 10 newtons of force), what would be the net force on the crate from all the pushing?

asked by ... on October 13, 2010
5. Physics

A mop is pushed across the floor with a force F of 36.0 N at an angle of Θ = 50.0° (see figure below). The mass of the mop head is 3.75 kg. Calculate the acceleration of the mop head if the coefficient of kinetic friction between the head and the floor

asked by Aron on September 30, 2016
6. physics

You live at the top of a steep (a slope of ???? degrees above the horizontal) hill and must park your 2200 kg car on the street at night. a) You unwisely leave your car out of gear one night and your handbrake fails. Assuming no significant frictional

asked by sabrina on March 1, 2016
7. physics

The position vector r of a particle moving in the xy plane is r=2ti+2sin[(pi/4)t]j , with is in meters and t in seconds. (a) Calculate the x and y components of the particle's position at , and 4.0 s and sketch the particle's path in the plane for the

asked by Anonymous on March 10, 2013
8. college physics

In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a distance of 0.88 m by the horizontal 25 N force from the broom and then has

asked by Help! on February 19, 2010

a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he continued in his way for the rest of their journey. how

asked by jas on January 10, 2015
10. physics

In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a distance of 0.77 m by the horizontal 25 N force from the broom and then has

asked by Sam on July 14, 2010
11. Physics

In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a distance of 0.87 m by the horizontal 25 N force from the broom and then has

asked by D on February 20, 2011
12. trigonometry

a clock has a dial face of 12 inches radius the minute hand is 9 inches while the hour hand is 6 inches the plane of rotation of the hour hand is 2 inches above the plane of rotation of the minute hand. Find the distance between the tips of the minute and

asked by Rose on March 18, 2014
13. English

Here is the secomd part of my rephrase. I urgently need to rephrase point 5 (symplifying it). 1) He addresses one of the pupils, identifying her by her number in the class, not by her name. She introduces herself as Sissy Jupe. 2) He takes offence at this

asked by Henry on March 7, 2012
14. Physics Check

A ball is rolling across the top of a billiard table and slowly rolls to a stop. How would Galileo explain the motion of the ball as it stopped? a)The ball's natural state is at rest =b)The ball stopped because it ceased to be pushed c)The ball stopped due

asked by Ariel on July 12, 2010
15. Physics

Two hikers, Alisha and Caleb, are resting on a hillside; the hill has a slope of 30 degrees, and Caleb is sitting above Alisha, eight meters away. They’ve brought fruit to eat on the trail, but they want to trade. a) Caleb throws an orange down to

asked by 0000 on April 26, 2015
16. MATH

WHAT IS A COORDINATE PLANE?

17. Physical Science

What does a plane do when it pitches?

asked by Bridgett on October 24, 2010
18. physical sciences

An air plane with

19. Physical science

What does a plane do when it piches?

asked by Birdy on October 24, 2010
20. math

what is a plane graph ?????????????

asked by brianna on January 19, 2009
21. Geometry

What is the definition for Plane???

asked by Karen on November 20, 2009
22. Calculus

Which of the following is the x-intercept of the plane 2x-4z+1=0? a) P(2,0,-4) b) P(0,0,0) c) P(-1/2,0,0) d) P(0,0,1/4)

asked by Jenny on April 10, 2012
23. Physics

A round object with mass m and radius R rolls down a ramp that makes an angle θ with respect to the horizontal. You can assume there is static friction so that the object rolls without slipping. a) For now, take the moment of inertia of the object to be I

asked by Vivek on November 23, 2015
24. Physics

In a physics experiment with an inclined air track, what do you predict about the following: a) Position graph b) Velocity c) Acceleration My ans: For a i predicted there would be a curve and i didn't know why b) velocity will decrease with time but why?

asked by Nikita on October 28, 2009
25. Physics

A skier wants to build a rope tow to pull herself up a ski hill that is inclined at 15 with the horizontal. Calculate the tension needed in the rope to give the skier's 54kg body a 1.2 m/s^2 acceleration.

asked by Albert on January 4, 2018
26. physics

A 600-pound boat sits on a ramp inclined at 30 degrees as shown in the attached image. What force is required to keep the boat from rolling down the ramp? Completely lost, never done physics before....

asked by Eoin on October 8, 2014
27. Physics

A brick of mass 0.7 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. (a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 2.50 m away? Ignore friction

asked by Anonymous on October 16, 2009
28. Physics Help!

A skier wants to build a rope tow to pull herself up a ski hill that is inclined at 15 with the horizontal. Calculate the tension needed in the rope to give the skier's 54kg body a 1.2 m/s^2 acceleration.

asked by Albert on January 4, 2018
29. Physics

Consider a skateboarder who starts from rest at the top of a 14.6 m-long ramp that is inclined at an angle of 13.0° to the horizontal. Assuming that the skateboarder's acceleration is g sin 13.0°, find his speed when he reaches the bottom of the ramp in

asked by Fallon on September 2, 2010
30. Physics

A boy is pulling a load of 150N with a string inclined at an angle of 30 degrees to the horizontal.If the tension in the string is 105N, calculate the force tending to lift the load off the ground.

asked by Ande2 on September 24, 2018
31. Maths

The training of a football team involves running up and down a sandhill 25 times. If the hill is 30 m high and inclined at an angle of 35 degrees to the horizontal, how far does the team run during the training? Answer to the nearest 0.1 km.

asked by Rick on September 23, 2017
32. Physics

I have two I need help with! 1. An airplane is flying in a horizontal flight level at constant velocity, heading due east. If the weight of the plane is 2.6 x 10^4 N, what is the net force on the plane? a)-2.6x10^4 N b)2.6x10^4 N c)0.0 N d) that due to

asked by Johnny on September 5, 2010
33. Physics-check

can you check my answers? 2.is more work required to bring a fully loaded truck up to a given speed, than the same truck lightly loaded? defend your answer? -more work is required to bring a fully loaded truck up to a given speed because it is doing more

asked by Elisabeth on October 17, 2007
34. ap physics

can you check my answers? 2.is more work required to bring a fully loaded truck up to a given speed, than the same truck lightly loaded? defend your answer? -more work is required to bring a fully loaded truck up to a given speed because it is doing more

asked by Elisabeth on October 16, 2007
35. Physics

Consider a stainless steel annular disk with an outer radius 66 mm and inner radius 7.1 mm. The mass of the disk is 1351 grams. Keep your answers to at least 4 significant digits. The stainless steel annular disk is allowed to rotate on a frictionless

asked by Anonymous on October 26, 2011
36. physics

Gradually increase the angle of the incline, but keep the angle low enough that the block does not slide. Select all the phrases below that would make the following statement true: For this situation, as the angle is increased the maximum possible value of

asked by Sam on June 8, 2014
37. Physics

A box is being pushed to the left parallel to the x-axis by a force of 23.0 N. A rope provides a second force of 33.8 N on the box, directed to the right at an angle of 39.0 deg. from the x-axis. What is the magnitude of the net force acting on the box ?

asked by Zack on November 20, 2012
38. Physics - Static Forces

Blocks 1 & 2 are connected by a string. Block 1 is on an incline & has a mass of 5.4kg. Block 2 is hanging from the string & has a mass of 2.1kg. The coefficient of friction is 0.22 between all surfaces. 1: What is the minimum angle "theta" can be while

asked by Josh on March 19, 2012
39. Physics

A crate of mass 50.0 kg rests on a flat surface, and there is a coefficient of static friction of 0.200 between the crate and the surface. A person pushed on the crate with a force of 5.00 N at an angle of 25.0 degrees below the horizontal. Will the crate

asked by Tiffany on September 26, 2012
40. graphing

Q: How could the function y=3t^2 +4 be plotted on a cartesian graph to produce a straight line? What would be the numerical values of the slope and the intercept of the line? For this it's explained in the lab book for physics as if the function is y=mx+b

asked by ~christina~ on September 2, 2007
41. physics

Two masses of 8 kg and 12 kg are tied to each end f a string passing over a massless and frictionless pulley. find the resulting accelration of each mass.

asked by markcampo on March 20, 2013
42. physics

Two small metal spheres with masses 2.0 and 4.0 are tied together by a 5.4--long massless string and are at rest on a frictionless surface. Each is charged to +2.4 .

asked by carlyle on February 20, 2011
43. Physics

a horizontal force Pushes a 80 N box up a frictionless 37 degree incline at a constant velocity as shown.? What is the magnitude of P in newtons?

asked by Naveed Khan on May 6, 2013
44. Physics

A novice skier starts from rest and slides down a frictionless 35 degree incline whose height is 125 m. How fast will she be going at the bottom?

asked by Anonymous on February 16, 2017
45. physics

A dude is spinning a 1.0 kg mass on the end of a 1.5 meter string. He gets it spinning at a constant rate of 4.0 rev/sec. The string breaks such that the mass is thrown into projectile motion with an initial angle of 45° to the ground (assume that it is

asked by hicham on November 30, 2014
46. maths

plz solve according to sequence and series pattern a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he

asked by jas on January 10, 2015

plz solve according to sequence and series pattern a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he

asked by jas on January 10, 2015
48. science

which of these is an example of a force being applied? A car was stuck in the mud. Two people pushed the car, but it did not move.why did the car not move even though a force was exerted on it?

asked by tahani alkhatib on January 24, 2016

In a physics laboratory experiment, a coil with 170 turns enclosing an area of 10cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to the field. The rotation takes 5.0×10^2 s

asked by henry on November 3, 2012
50. PHYSICS

A 14 cm diameter circular loop of wire is placed in a 0.58 T magnetic field. (a) When the plane of the loop is perpendicular to the field lines, what is the magnetic flux through the loop? (b) The plane of the loop is rotated until it makes a 36° angle

asked by JOSE on April 4, 2010
51. science

What kind of materials block sound.

asked by Laura on February 6, 2009
52. physics 12- dynamics

A 5kg block slides down an incline of 25

asked by sk on March 24, 2010
53. science

how far will 350 j raise a block weighing 7 N

asked by Myriel on November 17, 2010
54. physics

how far will 490 J raise a block weighing 7 N?

asked by Melany on December 13, 2011
55. chem

what is the electron configuration for Au+ ? where does f block fit in?

asked by natash on November 2, 2008
56. science

WHICH BLOCK WILL HAVE THE GREATEST CHANGE IN MOTION

asked by MARRY on February 17, 2014
57. Physics

The volume of a block of lead that has a mass of 33.6g would have to be?

asked by M on February 10, 2015

what will happen if a metal block that is 60°c is placed in water that is 20°c?

asked by Antoinette-Hope on April 24, 2011
59. physics/measurements

how do you compute the uncertainty in the volume of a block?

asked by Anna on February 15, 2009
60. science/chem

Why do the d and f block elements have only 2 valence electrons?

asked by missy on February 22, 2011
61. physics

Find the acceleration of the block of mass M = 4.79 kg (m = 4.03) (KE = 0.1)

asked by John on February 24, 2012
62. physics

find the average of a block being propelled propelled by an elastic band. We know it is uniform acceleration. my attempt on this problem Measure the force applied of elastic band with a newton scale. The more you strecth the farther the distance the block

asked by james on June 13, 2007

A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m

asked by Elle on October 20, 2011

This may seem like an easy question, but I am torn between two answers and would like some help. I am inclined to go with D. as my answer, but also feel like A. might also be correct. The greatsest number of elected officials responsible for the machinery

asked by Keith on November 26, 2007
65. physics for scientists and engeneers I

During a workout, the football players ran up the stadium stairs in 59 s. The stairs are 140 m long and inclined at an angle of 40°. If a typical player has a mass of 103 kg, estimate the average power output on the way up. Ignore friction and air

asked by Johnathon on February 16, 2011
66. Physics

A 4kg mass is pushed with a constant force for 1m then off the edge of the table and lands 7m from the edge of the table. a) What was the force pushing on the mass? b) What is the resultant velocity?

asked by Emma on March 7, 2013
67. Physics

you are driving up a long, inclined road. After 1.2 miles you notice that signs along the roadside indicate that your elevation has increased by 530ft. a. What is the angle of the road above the horizontal? b . How far do you have to drive to gain an

asked by ASB on March 13, 2012
68. Physics

A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?

asked by JOSH on August 22, 2014
69. Physics

A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?

asked by YESHA on August 23, 2014
70. PHYSICS

A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity.

asked by Mae on August 23, 2014
71. Physics 20

dynamics A curling stone has a mass of 20kg. a curler pushed the stone across the ice to launch it down the rink. a)if the curler starts to move the stone by pushing it with 15N, what is the stones initial acceleration? b)once moving, how much force is

asked by peter on April 7, 2011
72. Physics 20

dynamics A curling stone has a mass of 20kg. a curler pushed the stone across the ice to launch it down the rink. a)if the curler starts to move the stone by pushing it with 15N, what is the stones initial acceleration? b)once moving, how much force is

asked by bob on April 7, 2011
73. Pre-Calculus

Help please What is the slope of the line x = 4? would it be undefined??

asked by Anonymous on September 24, 2014
74. College Math

I need help with finding the slope and th y-intercept: 3y-2x=5+9y-6x

asked by lena Hose on February 10, 2010
75. MATH

WHAT IS THE SLOPE AND Y-INTERCEPT OF THE LINE 7-1/5y-3x =

asked by DAVISHA on February 4, 2009
76. Math

what is the slope and y intercept of this equation? x+2=0

asked by Elizabeth on May 20, 2012
77. Algebra 1

Find the slope and the y-intercept. y=-3x+3

asked by lucy on September 25, 2007
78. Algebra 2

The line 4x + ky = -1 has a slope of 2/3. Find k. a. 3/2 b. 6 c. -3 d. -6

asked by David on September 17, 2014
79. calculus

what is the slope of the curve y=tan(6x^2) when x=ð

asked by britt on January 5, 2011
80. math

x = -4 find the slope if it exists

asked by janay1978 on June 8, 2009
81. GEOMETRY

What is the slope of line that passes through (-4, -2) and (5, 1)?

asked by Lauren on February 20, 2012
82. math

find the slope if it exists of (-7,-3) and (-11,-19)

asked by lynn on March 28, 2012
83. calculus

f (4 + h) - f (4) = 4h^2 + 4h (a) What is f '(4)? (b) What is the slope of the secant line through (4, f (4)) and (7, f (7))?

asked by Mark on September 14, 2010
84. Algebra

Can you please help me with this problem 2x-y=6 I need to find the slope thank you

asked by Susan on January 21, 2010
85. Maths

is y-y1=m(X-x1) the formula for perpendicular slope>

asked by Fari on February 6, 2018
86. Math 116

Find the slope, if it exists x+7y=14

asked by Sam on July 17, 2008
87. Algebra 2

how do you find the slope and y intercept of: x= -3

asked by Elizabeth on April 12, 2012
88. Math

Find the slope of the graph of the following: 9x - 3y =15 a. -3 b. 3 c. -1/3 d. 1/3 ****

asked by Anonymous on January 9, 2018
89. Math

What is the slope of the line containing the points (-9,2) and (3,14)?

asked by Anonymous on January 27, 2016
90. Algebra

What would x have to be to give you a slope of zero,given the points: (4,x) and (3,9)?

asked by Kimmy on January 3, 2016
91. Math

Find the slope, if it exists x=-7

asked by Anonymous on August 2, 2008
92. Maths

is y-y1=m(X-x1) the formula for perpendicular slope>

asked by Fari on February 6, 2018
93. Pre-algebra

How do you find the slope of a hypotenuse?

asked by Jillian on August 14, 2008
94. Math

If the equation is 2y-x=6 what would be the slope and what would point A and B?

asked by Anonymous on December 1, 2013
95. algebra

find slope if it exists (1,10) and (7,-5)

asked by sam on January 9, 2011
96. Algebra

What is the slope of the line given by 4x = 0 by 5y = 0? How do I solve this?

asked by Michelle on January 10, 2011
97. math

What is the slope of the line described by the equation below? y - 9 = -2(x - 8)

asked by Anonymous on April 30, 2012
98. Analytic Geometry

asked by Jean on December 11, 2010
99. math

what is the slope of the line that contains the points (2,5) & (7,15)? a.) 2 b.) 1/2 c.) -1/2 d.) -8

asked by Anonymous on April 25, 2012
100. math

20x=4y+9 find the slope

asked by Anonymous on September 18, 2010