# Posts by anon

Total # Posts: 2,767

**American Government**

When Alabama's governor refused to end the policy of segregation in public universities, he invoked which common argument for separation of powers under federalism? A.states' rights B.checks and balances C.direct initiative D.bicameral legislation I think the answer is...

**American Government**

A woman is asked to serve on a jury. Instead of hearing two sides of the case, she only hears from the prosecutors, who ask the jury to decide whether they think someone is probably guilty. The state will only arrest the person and hold a formal trial if the jury feels it ...

**Social Studies**

Describe the Texans’ actions—how Texas came to exist. (America - Mexico war)

**Calculus**

Find the biggest value of c that satisfy the Mean Value Theorem for integrals for f(x)= 1/(x+1)^6 on the interval [0,7]

**math-IS MY ANSWER RIGHT?**

I got 261 PI

**math-IS MY ANSWER RIGHT?**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

**Math**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

**Calc 3**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

**Calculus**

Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = yzi + 9xzj + exyk, C is the circle x2 + y2 = 1, z = 3.

**Calculus**

I'm very confused on this?

**Calculus**

A particle moves along line segments from the origin to the points (3, 0, 0), (3, 3, 1), (0, 3, 1), and back to the origin under the influence of the force field F(x, y, z) = z2i + 2xyj + 3y2k. Find the work done.

**Calc**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = xy i + yz j + zx k S is the part of the paraboloid z = ...

**Calc**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = y i ? x j + z2 k S is the helicoid (with upward ...

**Calc**

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = sqrt(x2...

**Calc**

Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = xyi + 5zj + 7yk, C is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 9.

**Calculus**

The radius of a conical tank is 2.7 meters and the height of the tank is 4.3 meters. Water is flowing into the tank at a constant rate of 59.5 m3/minute. At the instant the the depth of the water is 0.6 meters, answer the following: (A) At what rate is the depth of the water ...

**Math**

Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = xyi + 5zj + 7yk, C is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 9.

**Math**

Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = x2z2i + y2z2j + xyzk, S is the part of the paraboloid z = x2 + y2 that lies inside the cylinder x2 + y2 = 25, oriented upward.

**american goverment check answers**

thanks anonymous! 10/10 100% :)

**Calc III**

Find the absolute maximum of the function f(x,y) = x^2 + 4y on the set of points (x,y) that satisfy x^2 + y^2 < or = to 25. I understand that you have to check the endpoints and find critical points, but I cannot solve this. Thank you.

**history**

yup answers are correct according to -_-, 5 is just D btw

**Math**

I think they want me to take the square root of 25 (which is 5) and add -9 which becomes -4. So is -4 a whole number, integer, radical? I know it isn't irrational

**Math**

I said the answer as is. They want to know what type of number you get when you add the square root of 25 and -9. sorry I don't understand this stuff

**Math**

Answers: Whole Number Irrational Number Integer Radical

**Math**

I don't understand :(

**Math**

When added the square root of 25 and -9 which type of number is the sum?

**social studies**

Lmao^

**Art**

Use reference for starters. Watch drawing tutorials. Research. And most of all, practice.

**Math**

A rectangle is dilated using a scale factor of 6. The image is then dilated using a scale factor of 1/3. What scale factor could you use to dilate the original rectangle to get to the final rectangle. Explain.

**American Government**

those are right, 100%

**history**

i got 100%

**Math**

^ lol. anonymous answer is very smart. xD

**American Government**

yup, 100% correct. thanks anonymous

**Physics - Buoyant Force Question**

Find the buoyant force on a helium balloon in air (Standard Pressure and Temperature) if the balloon is spherical with diameter 12.0 cm.

**Physics - Angular Speed Question**

A merry-go-round can be modeled as a disk with radius 2.5 meters and mass of 150 kg. For this problem, assume the density is uniform. It is initially rotating at 2.0 rad/sec. Two children of mass 30 kg and 40 kg hop onto the merry-go-round and stay near the edge. What is the ...

**Physics Question**

Find the escape speed from (a) the Sun, (b) a white dwarf star with one solar mass (same as the Sun) and radius 10,000 km, (c) a neutron star of 2.0 solar masses and radius of 10.0 km, and finally (d) a star with 2 solar masses and radius 5930 m. Comment on the speed of part (d).

**Physics - Tension Question**

A uniform bar of mass 12 kg and length 1.4 m is held by a hinge on a vertical wall. A string is attached to the end so that the bar is in mechanical equilibrium. The angle between the bar and the string is 25o. Find the tension in the string.

**Math**

right^^^^

**MATH**

Consider F and C below. F(x, y, z) = 2xz + y2 i + 2xy j + x2 + 15z2 k C: x = t2, y = t + 2, z = 3t ? 1, 0 ? t ? 1 (a) Find a function f such that F = ?f. f(x, y, z) = x2z+xy2+5z3+C Correct: Your answer is correct. (b) Use part (a) to evaluate C ?f · dr along the given ...

**American Government**

B C B

**Physics - Gravitation**

Vesta, a minor planet in the Asteriod Belt between Mars and Jupiter, has a mean radius of 525 km and mass of 2.59 X 10^20 kg. The Dawn Spacecraft (m = 1240 kg) orbited Vesta in 2011 & 2012. How much energy did the spacecraft expend going from the 2750 km orbit to a 210 km ...

**Physics Gravitation Question**

Vesta, a minor planet in the Asteriod Belt between Mars and Jupiter, has a mean radius of 525 km and mass of 2.59 X 10^20 kg. The Dawn Spacecraft (m = 1240 kg) orbited Vesta in 2011 & 2012. A. Find the local acceleration due to gravity at the mean surface of Vesta. What is the...

**Physics Gravitation Question**

Vesta, a minor planet in the Asteriod Belt between Mars and Jupiter, has a mean radius of 525 km and mass of 2.59 X 10^20 kg. The Dawn Spacecraft (m = 1240 kg) orbited Vesta in 2011 & 2012. Find the local acceleration due to gravity at the mean surface of Vesta. What is the ...

**social studies**

it strengthened their resolve to fight

**social studies**

which statement correctly contrast the Lancaster turnpike with the national road 1. the Lancaster turnpike was a longer road 2. the national road required users to pay a toll to use it 3. the national road was a corduroy road 4. the Lancaster turnpike was limited to travel in ...

**Calc III**

Express the volume of the solid that the cylinder r = 4cos(theta) cuts out of the sphere of radius 4 centered at the origin with a triple integral in cylindrical coordinates. I have already found the intervals, but I cannot solve it. The bounds are -sqrt(16-r^2) < z < ...

**Calc**

Find the work done by the force field F(x, y, z) = y + z, x + z, x + y on a particle that moves along the line segment from (1, 0, 0) to (5, 2, 3).

**Calc**

Evaluate the line integral, where C is the given curve. C y^3 ds, C: x = t^3, y = t, 0 ? t ? 2

**Calc**

Evaluate the line integral, where C is the given curve. C z dx + x dy + y dz, C: x = t^4, y = t^5, z = t^4, 0 ? t ? 1

**la**

if you're for connexus academy , lun is correct

**chemistry**

Consider these reactions where M represents a generic metal 1. 2M(s) +6HCl(aq) --> 2MCl3(aq)+3H2(g) (deltaH)= -725.0 kj 2. HCl(g)-->HCl(aq) (deltaH)= -74.8kj 3. H2(g)+CL2(g) --> 2HCl(g) (deltaH)=-1845.0kj 4. MCL3(s) --> MCl3(aq) (deltaH)= -476.0kj Use the ...

**chemistry**

Given these reactions : X(s) + 1/2O2(g) --> XO(s) (Delta)H= -707.7 kj XCO3(s) --> XO(s)+CO2(g) (Delta)H= +381.9kj What is (delta)Hrxm for this reaction? X(s)+1/2 O2(g)+CO2(g) ---> XCO3(s) (Delta)H= ?

**chemistry**

Calculate the standard enthalpy change for the following reaction at 25 °C. H2O+C(graphite)(s) --> H2(g) +CO(g)

**chemistry**

The following equation is the balanced combustion reaction for C6H6: 2C6H6(L) + 15O2(g) --> 12CO2(g)+6H2O(L)+6543 kj If 7.700 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water?

**chemistry**

If the heat of combustion for a specific compound is -1180.0 kJ/mol and its molar mass is 40.91 g/mol, how many grams of this compound must you burn to release 114.50 kJ of heat?

**chemistry**

A 2.50-g sample of powdered zinc is added to 100.0 mL of a 2.00-M aqueous solution of hydrobromic acid in a calorimeter. The total heat capacity of the calorimeter and solution is 448 J/K. The observed increase in temperature is 21.1 K at a constant pressure of one bar. Using ...

**chemistry**

When a 8.00-g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 3.344 kJ·K–1, the temperature decreases by 0.400 K. Calculate the molar heat of solution of KBr.

**chemistry**

A researcher studying the nutritional value of a new candy places a 4.10-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.47 °C. If the heat capacity of the calorimeter is 33.90 kJ·K–1, ...

**chemistry**

At constant volume, the heat of combustion of a particular compound is –3947.0 kJ/mol. When 1.311 g of this compound (molar mass = 136.58 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.343 °C. What is the...

**chemistry**

Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 7.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP= 30.8 J/(K·mol) for Na(l) ...

**chemistry**

When 1367 J of heat energy is added to 44.1 g of hexane, C6H14, the temperature increases by 13.7 °C. Calculate the molar heat capacity of C6H14.

**chemistry**

An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 8305 J. What is the specific heat of the gas?

**chemistry**

If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

**Social Studies**

Mongoose is right

**Chemistry**

Draw the product(s) of the following reaction CH3-CH2-C(triple bond)C-CH2 ---------> ? (Na/NH3)

**Calc**

Use spherical coordinates. Evaluate Triple integral SSSE where E lies between the spheres x^2 + y^2 + z^2 = 25 and x^2 + y^2 + z^2 = 49 in the first octant.

**math**

Change from rectangular to cylindrical coordinates. (Let r ≥ 0 and 0 ≤ θ ≤ 2π.) (a) (3, −3, 2) (b) (−2, −2sqrt3, 5)

**calc**

Write the equations in cylindrical coordinates. (a) 3z = 2x^2 + 2y^2 (b) 7x^2 + 7y^2 = 4y

**Calc**

Find the rectangular coordinates of the point, whose cylindrical coordinates are given. (a) (4, π/4, 1) (x, y, z) = (b) (6, −π/3, 5) (x, y, z) =

**Calc**

Change from rectangular to cylindrical coordinates. (Let r ≥ 0 and 0 ≤ θ ≤ 2π.) (a) (3, −3, 2) (b) (−2, −2sqrt3, 5)

**Calc**

Write the equations in cylindrical coordinates. (a) 3z = 2x^2 + 2y^2 (b) 7x^2 + 7y^2 = 4y

**CALC**

Find the rectangular coordinates of the point, whose cylindrical coordinates are given. (a) (4, π/4, 1) (x, y, z) = (b) (6, −π/3, 5) (x, y, z) =

**Math**

Cheater! Do your own math. Cheating = Lazy. Work hard!

**Math**

Use a triple integral to find the volume of the given solid. The solid enclosed by the cylinder x^2 + y^2 = 9 and the planes y + z = 19 and z = 2.

**Math**

Use a triple integral to find the volume of the given solid. The tetrahedron enclosed by the coordinate planes and the plane 8x + y + z = 4

**Math**

Find center of mass of the lamina that occupies the region D and has the given density function ρ. D is the triangular region with vertices (0, 0), (2, 1), (0, 3); ρ(x, y) = 5(x + y) mass=30 Find center of mass

**math**

what is the solution to the following system? -2x-y=1 -4x-2y=-1

**CALC**

Use a triple integral to find the volume of the given solid. The solid enclosed by the cylinder x^2 + y^2 = 9 and the planes y + z = 19 and z = 2.

**CALC**

Use a triple integral to find the volume of the given solid. The tetrahedron enclosed by the coordinate planes and the plane 8x + y + z = 4

**SOCIAL STUDIES (CHECK answer)**

MS sue how does saying i agree help anyone

**Calc**

Find the mass and center of mass of the solid E with the given density function ρ. E is bounded by the parabolic cylinder z = 1 − y^2 and the planes x + 6z = 6, x = 0, and z = 0; ρ(x, y, z) = 4. m=? x, y, z=?

**Calc**

Use a triple integral to find the volume of the given solid. The solid enclosed by the cylinder x^2 + y^2 = 9 and the planes y + z = 19 and z = 2.

**math**

why do you need to tell everybody their location??? that makes no sense at all

**Calc**

Use a triple integral to find the volume of the given solid. The solid enclosed by the cylinder x^2 + y^2 = 9 and the planes y + z = 19 and z = 2.

**Calc**

Use a triple integral to find the volume of the given solid. The tetrahedron enclosed by the coordinate planes and the plane 8x + y + z = 4

**Calc**

Evaluate the triple integral. SSS(triple integral T 3x^2 dV where T is the solid tetrahedron with vertices (0, 0, 0), (1, 0, 0), (0, 1, 0), and (0, 0, 1)

**Calc**

Evaluate the following integral using three different orders of integration. *triple integral E (xz − y3) dV, where E = (x, y, z) | −1 ≤ x ≤ 3, 0 ≤ y ≤ 4, 0 ≤ z ≤ 3

**Calc**

Find the mass and center of mass of the lamina that occupies the region D and has the given density function ρ. D is the triangular region with vertices (0, 0), (2, 1), (0, 3); ρ(x, y) = 5(x + y) m=? (x,y)=?

**CALC**

Its wrong.

**Thermochemistry**

The given reaction was: 2C6H6(l)+15O2(g)=12CO2(g)+6H2O(g) dH rxn= -6278kJ

**Thermochemistry**

What volume of benzene (C6H6, d= 0.88g/ml, molar mass= 78.11g/mol) is required to produce 1.5x10^3 kJ of heat according to the following reaction? I just can't figure out what equation to use to solve this. Help, please?

**Physics Force and Friction question**

A crate of mass 100kg is at rest on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.3. A horizontal force, F, or magnitude 350N is applied to the crate. Which of the following is true? ...

**Physics**

You are in an elevator that is accelerating upwards at 2m/s^2. If your mass is 70kg, what is the normal force pushing on you by the floor of the elevator? A. 70N B. 690N C. 830N Please give the correct answer and an explanation as to why its correct.

**Physics**

A crate of mass 100kg is at rest on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.3. A horizontal force, F, or magnitude 350N is applied to the crate. Which of the following is true? ...

**Physics**

Multiple Choice. If all of the forces acting on an object an object are balanced (net force is zero), then: a. The object's speed will decrease b. The object's direction of motion can change, but its speed cannot C. The object is ecperiencing zero acceleration Please ...

**Physics**

Why is the joule-second (J*s) equivalent to kg*m^2/s ?

**physics**

A stone is thrown vertically upward at 23 m/s. How fast is it moving when it reaches 14 m?

**Social Studies**

Okay thank you so much!

**Social Studies**

Why did the Western Roman Empire fall? Thank you for helping me!

**Social Studies**

Okay thank you so much I really really appreciate it!