Sunday

January 22, 2017
Number of results: 21,567

**physics**

If the ball is in equilibrium when the string makes a 25.9 ◦ angle with the vertical as indicated, what is the net charge on the ball? Answer in units of µC. i know how to do this if i had the balls mass and the electric field or some other information, but im lost with...

*February 10, 2011 by Rachel*

**Physics**

Brandon launches a projectile at an angle of 75 degrees above the horizontal, which strikes the ground a certain distance down range. For what other angle of launch at the same speed would the projectile land just as far away?

*September 24, 2012 by Baylyn*

**physics**

Collision of charged particles}} A proton moves in vacuum and enters a region where there's another proton at rest. The protons interact and the angle between their velocities is measured when they are far away from each other. What is the most likely value for this angle in ...

*February 18, 2013 by can u please help me! please*

**Math**

From two tracking stations, A and B, 450km apart, a satellite is sighted at C directly above the line joining A to B. At the moment of sighting, angle A is 39 and angle B is 45. Find the height of the satellite. Please show all your steps clearly and asap, Thanks

*February 16, 2014 by Umar*

**Algebra 2**

The point of no return for an airplane, flying over water from point A on land to point B on land, is that distance into the trip for which it takes just as much time to go on to B as it does to return to A. The distance from San Francisco to Honolulu is 2387 miles. A plane ...

*November 1, 2011 by Anonymous*

**Physics**

For a given initial projectile speed, you observe that the projectile has a certain range R at a launch angle A = 30 degrees. For what other launch angle will the projectile have the same range (assuming the same initial projectile speed)? Without the use of mathematical ...

*February 17, 2014 by Tim*

**trig**

a tower that is a 200 meters is leaning to one side. from a certain point on that side, the angle of elevation to the top of the tower is 70 degree. From a point 55 meters closer to the tower, the angle of elevation is 85 degree. Determine the acute angle from the horizontal ...

*February 5, 2013 by Anonymous*

**physics**

A mass is hung from a beam of weight 2.0 N and length 81 cm. The tension and angle of the cable supporting the beam is 5.0 N at an angle of 40° from the horizontal. Using torques produced calculate the value of the unknown mass.

*November 24, 2009 by Allie*

**trigo**

Two points, A and B, are 526 meters apart on a level stretch of road leading to a hill. The angle of elevation of the hilltop from A is 26deg30mins, and the angle of elevation from B is 36deg40mins. How high is the hill?

*August 3, 2010 by trigofunctions*

**trigonometry**

two points, A and B, are 526 meters apart on a level strecth of road leading to a hill. The angle of elevation of the hilltop from A is 26deg30mins, and the angle of elevation from B is 36deg40mins. How high is the hill?

*August 11, 2010 by Winsel*

**Physics!!!**

A rod of length 1m lies in the lab frame making angle θ=30 with the x-axis. Find the length and the angle it makes with the x’-axis as seen by an observer moving at u=0.8c along the y-direction.

*March 13, 2011 by Jennifer*

**trigonometry**

Suppose (x, y) =(4, -5) and θ is an angle in standard position with (x, y) on its terminal side. What is the degree measure of angle θ? im not sure how to do this one problem plz show step by step

*November 13, 2012 by v*

**physics**

a projectile is fired at 50 meters per second at an angle of 30 degrees below the horizontal off a cliff that is 50 meters high. How far away and at what speed and angle will this projectile land?

*November 2, 2014 by Joanne*

**physics**

A woman measures the angle of elevation from her current location to a mountaintop to be 12.0°. After walking 1.10 km closer to the mountain on level ground, she measures the angle again and finds it to be 14.0°. What is the height of the mountain?

*January 12, 2015 by Brittani*

**math**

In a circle with a radius of 5cm and is centered at point O, angle AOB intercepts arc AB. Arc AB has a length of 10cm. What is the degree measure of angle AOB? Round to the nearest hundredth.

*April 29, 2015 by kathy*

**Calculus**

two sides of triangle are 10m and 19m and the angle between them is increasing at a rate of 2 degrees per minute. How fast is the third side changing when the angle between them is 60 degrees

*June 20, 2015 by Pat*

**Geometry**

Set up a system to solve. Two angles are supplementary. Three times one angle is equal to the other angle minus 16. Find the angles. The answer is x= 41 and y= 139. How did they get the answer?

*October 8, 2015 by ashley*

**chemistry**

Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water is 1.86°C·kg/mol and that the freezing point of water is 0.00°C

*April 19, 2012 by hereyago*

**TRIGNOMETRYY**

FROM A WINDOW 9M ABOVE GROUND OF HOUSE IN A STREET ANGLES OF ELEVATION AND DEPRESSION OF TOP AND FOOT OF ANOTHER HOUSE ON OPPOSITE SIDE OF STREET ARE 30DEGREE AND 60DEGREE FIND HEIGHT OF OPPOSITE HOUSE AND WIDTH OF STREET.

*November 29, 2014 by sarth*

**Physics**

A ballistic pendulum consists of an arm of mass M and length L = 0.52 m. One end of the arm is pivoted so that the arm rotates freely in a vertical plane. Initially, the arm is motionless and hangs vertically from the pivot point. A projectile of the same mass M hits the lower...

*October 24, 2011 by mymi*

**geometry**

Basic Geometry 1. Find the perimeter of a rectangle 19 cm long by 27.8 cm wide. 2. In triangle ABC, angle A = 47°, and angle B = 8°. Find angle C. 3. Find the perimeter of a triangle with sides of length 28 cm, 47 cm and 19 cm. 4. In triangle FGH, angle F = 32°, and angle G...

*March 1, 2011 by shirley*

**Physics**

The rigid object shown in Fig. 10-63 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°. Fig. 10-63 The balls may be treated as particles, and the connecting rods have negligible mass. Determine the rotational kinetic energy of ...

*July 28, 2010 by Tim*

**physics1**

Vector A has a magnitude of 6 and is at an angle of 32.4 degrees measured counter-clockwise from the x axis. Vector B has a magnitude of 12 and is at an angle of 113.8 degrees measured counter-clockwise from the x axis. Vector C has a magnitude of 17 and is at an angle of 180...

*September 24, 2015 by sally*

**Please check history**

Please check! What was the effect of the depression of the 1890s on South Carolina? a. Gold was discovered in Alaska. b. Many banks failed and railroads went bankrupt. c. Paper money was no longer backed by gold.*** d. Inflation caused farmers to run large debts.

*March 15, 2016 by Blair*

**HCA 220**

What are the coronal plane and body directions

*March 30, 2008 by AXIA*

**science**

Why is the mechanical advantage of an inclined plane less than 1

*April 13, 2008 by j*

**Calculus**

the length of the curve of intersection of the cylinder (4x^2) + y^2 = 4 and the plane x + y + z = 2

*April 23, 2009 by Anonymous*

**algebra**

How many dimensions do linear equations on the x-y plane have?

*November 28, 2009 by Conrad*

**Math**

How many dimensions do linear equations on the x-y plane have?

*November 28, 2009 by Conrad*

**Math**

How many dimensions do linear equations on the x-y plane have?

*November 29, 2009 by Conrad*

**Maths**

The line r=(2,3,4)+µ(-1,0,3) and the point (6,0,2) form which plane: (a) r.(-1,0,3)=10 (b) r.(9,10,3)=60 (c) r.(2,3,4)=29 (d) r=(2,3,4)+µ(-1,0,3)+ù(6,0,2) Please help!!! Thanks!

*March 11, 2010 by Anonymous*

**maths**

The line r=(2,3,4)+µ(-1,0,3) and the point (6,0,2) form which plane: (a) r.(-1,0,3)=10 (b) r.(9,10,3)=60 (c) r.(2,3,4)=29 (d) r=(2,3,4)+µ(-1,0,3)+ù(6,0,2) Please help!!! Thanks!

*March 12, 2010 by Anonymous*

**Math**

What must be true for a pentagon so that it will tessellate a plane?

*March 23, 2010 by Lyndse*

**Calculus**

Show that the vectors (-1,2,3), (4,1,-2) and (-14,-1,16) do not lie on the same plane

*April 28, 2010 by Blazon*

**algebra**

Graph he inequality on a plane 4y - 5x> 20 I am confused, can you please help?

*June 27, 2010 by Darla*

**Algebra**

graph inequality on a plane 4x+5y is less than or equal to 20

*October 3, 2010 by Layne*

**Math**

In how many ways can 7 people line up for plane tickets?

*March 26, 2011 by Valerie*

**Geometry**

Will an octagon and an isosceles triangle tessellate a plane?

*April 28, 2011 by Micah*

**Physic**

what is the focal length of a plane mirrior which is 4m tall?

*June 9, 2011 by Daniel*

**geometry**

What is the perimeter of PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3) in the coordinate plane?

*September 22, 2011 by mike*

**Calc**

Find the point in which the line x=1-t, y=3t, z=1+t; meet the plane 2x-y+3z=6

*September 26, 2011 by mando*

**math**

If line l in the x-y plane contains the point (-2,1),(4,5) and (5,t), what is the value of t?

*October 26, 2011 by reena*

**Calculus**

6. Find out if the line r = (1, 3, 8) + t (-2, 5, 7) is parallel to the plane 3x + 4y - 2z = 1

*May 25, 2012 by j*

**Calculus**

6. Find out if the line r = (1, 3, 8) + t (-2, 5, 7) is parallel to the plane 3x + 4y - 2z = 1

*May 26, 2012 by j*

**Calculus**

6. Find out if the line r = (1, 3, 8) + t (-2, 5, 7) is parallel to the plane 3x + 4y - 2z = 1

*May 26, 2012 by j*

**Math**

find the distance between M(1; 0; -3) point and 2x-2y+z+7=0 plane

*January 18, 2013 by yoshii*

**math**

Which point is located on the y-axis of a coordinate plane? 6,0 3,2 6,6 0,6

*July 19, 2013 by sam*

**math**

Find the equation of the plane equidistant from the points (1,8,3) and 94,10,7)

*December 16, 2013 by Tristan*

**Vectors**

Find the equation of the plane equidistant from the points (2,8,3) and (4,12,9)

*December 17, 2013 by Anonymous*

**Math**

How to make an equation out of 0,5 and -3,-4 on a coordinate plane

*October 9, 2014 by Coleson*

**Math**

How to make an equation out of 3,3 and 0,1 on a coordinate plane

*October 9, 2014 by Coleson*

**math**

Find the distance between the point and the plane. (2, 5, 3) 3x + 2y – 3z = –6

*October 17, 2014 by Morgan*

**math**

Find the point in the xy plane which is equidistant from (1,1), (7,1), and (1,9). Please and thanks.

*May 6, 2016 by k*

**math**

Find the point in the xy plane which is equidistant from (1,1), (7,1), and (1,9). Please and thanks.

*May 7, 2016 by bong*

**maths**

find the distance between the point and the plane (2, 5, 3) 3x + 2y - 3z = -6

*August 31, 2016 by lottie*

**Pre-Algebra [repost]**

I'm sorry I had to repost, but this is urgent and i need it done by today!! Can someone please show me how to do these problems? I've been trying but I'm having a hard time... 1.Simplify the expressions on each side of the equation to obtain an equivalent equation: 5x + 12 + ...

*May 2, 2009 by mysterychicken*

**Physics**

A Hollywood daredevil plans to jump the canyon shown in the figure on a motorcycle. There is a 15. m drop and the horizontal distance originally planned was 60. m but it turns out the canyon is really 65.7 m across. If he desires a 3.2-second flight time, (a) what is the ...

*December 8, 2013 by Emily*

**algebra!**

If the measure of angle A is doubled and then decreased by 10 while the complement of angle A is decreased by one-third of itself, then these two anlges formed are still complementary. Find the supplement of angle A. Please explain so i could understand. thank you ! Isn't this...

*August 31, 2006 by Kelly*

**Physics**

A plane leaves Seattle, flies 79.0 at 22.0 north of east, and then changes direction to 48.0 south of east. After flying at 123 in this new direction, the pilot must make an emergency landing on a field. The Seattle airport facility dispatches a rescue crew. In what direction ...

*September 19, 2006 by Morgan*

**Trigonometry**

Hi, this question concerns a right angled triangle. If I know the hypotenuse of the triangle is 16cm and I know the adjacent side to an unknown angle is 14cm which trigonometric ratio would I need to find the unknown angle? Many thanks

*July 4, 2010 by Sam*

**geometry**

anthony is building a picnic table for his patio. he cut one of the legs at an angle of 40 degrees. at what angle should he cut the other end to ensure that the top of the table is parallel to the ground?

*November 1, 2011 by sam*

**math, functions**

stefan has set up a right triangle EFG on the side of a river such that FG measures 20m and angle DEF measures 60 degrees. EG bisects angle DEF. determine the width of DG.

*November 20, 2011 by yess*

**biomechanics**

a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.

*February 16, 2012 by J*

**math**

a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.

*February 16, 2012 by J*

**Yorktwon**

Use a straightedge and a compass to construct a triangle with 2 sides having the same length. Describe the process you used. Now use a protractor to measure each angle of the triangle. What are the measures of each angle?

*February 17, 2012 by Anonymous*

**geometry**

I relly need help on this question. "Determine whether the conjecture is true or false.Give an example if its false". Given: angle ABC,angle DBE are congruent. Conjecture:They are vertical angles.

*September 18, 2012 by stef*

**Math**

let AB and CD be perpendicular diameters of a circle. two chords AE and AF, which lie in the two different semicircles determined by the diameter AB are cut by the diameter CD in the points X and Y respectively. prove that angle EXF = angle EYF

*September 19, 2012 by Jun*

**math**

Two squirrels are sitting on a rope as shown. The tension in segment BD is TBD = 6.3 lb at an angle of ϕ = 47 degrees. The tension in segment AB is TAB = 5.229 lb. Find the weight of the squirrel at B and the angle α.

*December 6, 2013 by nick*

**Algebra**

Two angles are complementary. The larger angle measures 6 more than three times the smaller angle. Write an equation that can be used to find out the measures of both angles then simplify

*October 8, 2014 by Sandal*

**trigo**

two points A and B are 562 meter apart on a level stretch of road leading to a hill . the angle of elevation from A is 26degree 30minutes, and angle of elevation from B is 36degee 40minutes. how high is the hill ?

*January 12, 2015 by jilline*

**physics**

This green box, which has a mass of 500 kg, is hanging from the ceiling by two ropes. However, it's not quite centered correctly. Angle θ1=20.8 degrees and angle θ2=30.8 degrees. What is the tension in Rope # 2?

*March 5, 2015 by Jannatul*

**Trigonometry damon plz help**

If the angle of a h meters long tower is in a straight line between two observers A and B angle of elevation of the top of the tower from A and B are alpha and beta respectively and AB=D meters find h/d

*September 18, 2015 by Edward*

**Geometry help**

m angle 2 =34 degrees find m angle 1 Would appreciate the help on this one This is for long x that has 1 and 3 labeled top and bottom left side is labeled 4 right side is 2 That's what it looks like best I know how to describe it

*October 5, 2015 by sammy*

**Geometry**

In an isosceles triangle, line segment AC is congruent to line segment AB. Find the value of y in terms of x if one of the remote interior angle is y and the exterior angle is 3x+20. I think the answer is y=6x-140 but I don't know how they got it.

*December 8, 2015 by Ashley*

**Geometry**

I need help with this paragraph proof I have no clue what I am doing. Given: QS bisects angle PQR. Angle PQS equals 45 degrees. Prove: PQR is a right triangle. I really need help, I don't want to fail.

*September 13, 2016 by Kat*

**physics**

a) A stepped optical fiber consists of a central cylindrical core of refractive index n1 and a cladding of refractive index n2. Show that the maximum acceptable angle at which light enters the plane end of the core of the fiber from air is èmax = (sin^-1) x [(n1^2)-(n2^2)]^-1...

*October 16, 2011 by Karaokyanus*

**Math**

The difference between the smallest and second smallest angles of a quadrilateral is equal to the difference between the biggest and second biggest angles. If the biggest angle is twice the smallest angle, what is the measure of the smallest angle? (Solution pls... Tnx)

*January 26, 2015 by MNHS_HELP*

**math**

There are four angles, a,b,c,d. The measure of angle a is (3x+10) degrees. The measure of angle d is (x+10).What is the value of x? I made an equation 3x+10=x+10. I think the value is 0.

*February 9, 2008 by bob*

**math**

In a quadrilateral ABCD, the diagonal AC bisects angle BAD and AB = BC = CD. Prove that the other diagonal, BD, bisects angle ADC.

*August 7, 2010 by mathsen*

**trig**

When the sun's angle of elevation is 30 degree the shadow of a post is 6 ft longer than when the angle is 45 degree. find the height of the post

*January 16, 2011 by Cas'*

**geometry**

If two angles are complementary and the measure of one angle is 35 degrees, then the measure of the other angle is______ degrees.

*May 17, 2011 by Raven*

**gr10 science**

What is the index of refraction of a refractive medium f the angle of incidence in air is 30 degrees and the angle of refraction is 15 degrees?

*June 7, 2011 by Rebecca*

**Math**

Points K,L, and M are on line l in that order. N is a point not on line l. The measure of angle KLN is (3x+3) and the measure of angle NLM is (5x-7). What is the value of x?

*September 2, 2011 by Luke*

**MATH**

Ok when your plotting a graph of Sin angle i against Sin angle r , which of those goes on the y axix and which goes on x axis??

*September 6, 2011 by Nelly*

**geometry**

In an isosceles triangle, if a base angle has a measure of 43 degrees, then the vertex angle must have a measure of 80 degrees as well.

*November 1, 2011 by Anonymous*

**trig**

Find the length of side b to the nearest whole number if side a=105,angle A=65 degrees and angle B=37 degrees?

*January 25, 2012 by hd*

**trig**

(-10√2, -10√2), find te magnitude and direction angle of the vector, measure the direction angle in [0, 360). Please help!

*April 30, 2012 by Savannah*

**math**

Given a right triangle ABC, if the measure of angle B=30 degrees, the measure of angle C=90 degrees, and AB=5cm, find AC

*June 6, 2012 by martha*

**Math**

In a right triangle, the middle angle is 12 more than twice the smallest angle. What are the measures of the smallest and middle angles?

*October 9, 2012 by Jaime*

**Geometry**

ray OB is the bisector of angle AOC and ray OC is the bisector of angle BOD. m<AOD =120 find m<AOB

*September 5, 2013 by Sheila*

**geometry**

ABCD is a rhombus with diagonals Imported Asset and Imported Asset . Is angle ABD congruent to angle CBD?

*July 7, 2014 by Katie*

**math**

If ray BD bisects right angle ABC, the measure of angle ABD is A. 180 degrees B. 90 degrees C. 50 degrees D. 45 degrees

*August 13, 2014 by Balawal*

**Geometry**

Make a valid conclusion in the situation. -If the measure of an angle is 90 degree, then it is a right angle. The measure of <A is 90 degree. Plzzzz help me!!!

*September 11, 2014 by Mandeep*

**math**

Heong cut a slice of birthday cake . The slice formed the angle shown. What is the measure of the angle shown?

*April 20, 2016 by eman*

**Math - Geometry**

Two right triangles are touching at the tips. The left triangle has the 90 degree angle to the bottom left, and 33 degrees on the bottom right. Based on this info, the other angle is 57 degrees. The right triangle has the right angle given, but it is on the top right, and the ...

*December 1, 2007 by Nikki*

**Physics - Equilibrium**

A uniform ladder of mass M and length L leans at an angle theta against a frictionless wall. If the coefficient of static friction between the ladder and the ground is U, determine a formula for the minimum angle at which the ladder will not slip.

*April 18, 2008 by Nik*

**physics**

a uniform ladder of mass m and length l leans against fricitonless wall angle theta. If the coefficient of static friction between the ladder and the ground is u, find the formula for the minimun angle such that the ladder won't slip

*November 30, 2012 by ashley*

**trigonometry**

I wont be receiving credit for these problems but i was just wondering how would i answer them... A) The area of a sector of a circle with a central angle of 25π rad is 21 mm². B) The angle between 0 and 2π in radians that is coterminal with the angle 487π in ...

*April 13, 2015 by Michael*

**Physics**

Consider the 665 N weight held by two cables The left-hand cable had tension T2 and makes an angle of 43◦ with the ceiling. The right-hand cable had tension T1 and makes an angle of 48◦ with the ceiling. What is the tension in the cable T1 slanted at an angle of 48...

*March 15, 2012 by Ashley*

**Chemistry(Urgent, please help,thank you)**

After performing a freezing point depression experiment I had to find the molecular weight of glycol. Now I have to answer the question what value did I assume "i" to equal and why did I make this assumption. My teacher told us the value of i to use for this was 1. I am not ...

*February 21, 2012 by Hannah*