# Posts by Anonymous

Total # Posts: 109,614

chemistry
Under the same condition temperature and pressure hydrogen diffuses 8 times as fast as gas y calculate the rmm of gas y the rmm of h=2

Chemistry
O = 16 g/mol Mg = 24 g/mol so mass MgO/mass Mg = (24+16)/24 mass MgO = 24 (24+16)/24 = 40 grams

physics
(1/2) k x^2 = (1/2)(144)(.01) Joules

Algebra
Difference of two ninbers is 5 and difference of thier reciprocal is 1/10 find the numbers. Answer: X-Y=5 X=Y+5 1/X - 1/Y = 10 1/Y+5 - 1/Y =10 LCM ....

Math
7m long flagstaff is fixed on tower standing on horizontal plain . Frm a point on the ground angle of elevation of top and bottom of flag staff are 60 and 40 find height of tower

chemistry
Calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10 M Na2CO3. (Ka = 4.3 x10-7)

Math - Trigonometry
When calculating the lengths for a square based pyramid, is there a way to calculate the length from a point to the point opposite of it, given the side length and height? Thanks in advanced.

Physics
A wire runs left to right and carries a current in the direction shown. What is the direction of the magnetic field at point Z?

Physics
A positive charge moving up enters a magnetic field pointing out of the screen. What is the direction of the magnetic force on the charge? up down right left

Physics
direction of the magnetic field?

Physics
What must be known to determine the direction of the magnetic force on a charge? the type of the charge the amount of the charge the direction of the magnetic field the velocity of the charge the strength of the magnetic field

Physics
Here are the choices: 0.01 T 0.05 T 0.1 T 0.2 T

Physics
that's not one of the choices

Physics
The magnetic field 0.02 m from a wire is 0.1 T. What is the magnitude of the magnetic field 0.01 m from the same wire?

Language Arts
Thank you!!

Language Arts
If I had to change my answer I would think 1 is C.

Language Arts
The Tide Rises, the Tide Falls by Henry Wadsworth Longfellow The tide rises, the tide falls, The twilight darkens, the curlew calls; Along the sea-sands damp and brown The traveller hastens toward the town, And the tide rises, the tide falls. Darkness settles on roofs and ...

Language Arts
Thank you!

Language Arts
1. Which of the following sentences has correct subject-verb agreement? A. A scarf or a hat keep you warm in the winter. B. Either Grandma or your brother pick your birthday gifts each year. C. Stacey and her sisters go to the beach every summer.** D. A dog or a cat are a good...

Language Arts
Thank you!!

Language Arts
1. what is the best way to correct the error in this sentence? Neither Tim nor Kristina go to the movies often A.delete the conjunction B.Change go to attend C.Change the verb to goes** D.Change neither to either 2. Which sentence below contains a dependant clause ? A. I know ...

Math - Trigonometry
A, B and C are three towns, the bearing of B and C from A being 295° and 205°, and their distances from A are 280km and 800km respectively. Find the bearing of C from B to the nearest minute.

Math - Trigonometry
Standing on top of a building 42 m high, an observer sights two objects at P and Q on opposite sides of the building. The angles of depression from the observer to P and Q are 23° 18' and 35° 33' respectively. What is the distance between P and Q to the nearest...

Math - Trigonometry
Ok, I know how to do this question, but I just don't get the apostrophe after 15. Supposedly, it means seconds but I don't know what that has to do with this.

Math - Trigonometry
The diagonal of a rectangle of width 3.8, makes an angle of 32° 15' with each of the longer sides. Find the length of the diagonal, and the length of the rectangle. Im not sure how to picture/draw the shape, which in term will tell me if it is cos, sin or tan. Also ...

Math
Same.

Math
area of a rectangle is length times width and 3/4 mile is width

physical science
2.0x10^19-protons is net electric charge since electrons are negative and protons are positive.Is the protons given also?

math
2/3=4/6 and 1/6=1 drop

math
in cooking 1 drop equal 1/6 of a dash. if a recipe calls for 2/3 of a dash, how many drops would that be.

Math
half of 4 is 2 and 4 1/2 is 2 1/4

Math
What is half of 4 and 4 1/2

English
dancing is an action verb not an adjective. Dance could be a noun or adjective depending what is used, so the first one is correct since its describing classes.

world history
how was the roman empire latinized? how did roman culture and politics spread?

Math
I have a rectangle with a semicircle on each end.the area of the rectangle is 5500 sqare meters. What is the perimeter of the track

economics
explain the role of moral considerations in policy selections

Math
I need some help on this function rule question please. 8.) Find the function rule. x: -2 -1 0 1 2 y: 9 4 -1 -6 -11 I'm having a really hard time figuring this out. Thanks to anyone that helps:)

LA
which line in the river poem contains a simile

I'm here

Social studies
Did you ever get the answers?

Social studies
Did you ever get the answers?

Social studies

Chemistry
You dissolve 2.35 g of sodium carbonate (Na2CO3) in sufficient water to produce a final solution volume of 100.0 mL. Assuming all of the solid dissolves, calculate the solution pH.

Calculus
How do you use u-substitution with 20sin(x^2/35)?

Maths
A car travels 240 km in 2 hours. How long will it take to travel 600 km at the same speed?

Social studies
Lol twig is right THANK YOU SO MUCH

Physics
Given that charge of the electron is 1.6 x10^-19 C,What is the energy gained by the cathode ray particle when a voltage of 800 volts is applied between the electrodes of a cathode ray tube

physics
The answer is 22.3m for the maximum height.

maths
show that the radius of right circular cylinder of maximum volume that can be inacribed in a sphere of radius 18cm is 8?6

World History
OK..all this talkin and no one put what to write...bruhh..

probability
Paul is vacationing in Monte Carlo. On any given night, he takes X dollars to the casino and returns with Y dollars. The random variable X has the PDF shown in the figure. Conditional on X=x, the continuous random variable Y is uniformly distributed between zero and 2x. ...

algebra
George goes to the supermarket to buy some canned tomatoes to make salsa for a party. The cans are on sale for \$0.95 each. He has \$4.75. Let x represent the number of cans that he can buy. Write the equation that models this situation.

basic math
how to write forty five thousand three hundred twelve

math
Thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:))):):):)))))))):):):):):):):):):):):D:D:D:D:D:D:D:D:D:D:D:D:D I seriously just guessed!

math
not sure. All I got was a line with 42 ft with a dot in the middle

math
find the circumference of the circle round to the nearest foot. it is 42 ft I got a but I'm not sure. A.132ft B.264ft C.1,320FT D.2,640FT

Science
How are the primary pigments related to the primary colors? The primary pigments are: A. Complementary to the primary colors B. Associated with the primary colors C. Unrelated to the primary colors Is the answer A?

Math
If the scale had been 2/3 inch: 4 feet , how many inches longer would the scale drawing of Quinta's bedroom have been?

AP Physics
A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the right. The string pulling the spool is wrapped around it many times, and the other string is fastened to the center of the block. Both hands pull with ...

Language Arts
In what marking period was Melinda suicidal. In the book Speak And please do not give me links to other sites.

Physics
A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the right. The string pulling the spool is wrapped around it many times, and the other string is fastened to the center of the block. Both hands pull with ...

Physics
A potter’s wheel with rotational inertia 24 kg m2 is spinning freely with no friction at 50 rpm. A piece of clay is dropped from above the wheel and sticks 0.5 m from the center of the wheel. Afterward, the rotational speed of the wheel and clay has dropped to 48 rpm. The...

Physics
The game of Jacks is played with pieces like those shown to the right, consisting of four small spheres at the ends of two perpendicular rods of length L and mass M. The piece is spun as shown about an axis through the third perpendicular rod of length L and mass M. Assume ...

Physics
A wheel with rotational inertia I initially rotates with a angular speed ?i . A torque is applied, speeding the wheel up to three times the angular speed in time ?t . A) Find the magnitude of the applied torque. B) Find the work done on the wheel during this time.

Physics
A hamster sits 0.10 m from the center of a lazy Susan of negligible mass. The wheel has an angular velocity of 1.0 rev/s. How will the angular velocity of the lazy Susan change if the hamster walks to 0.30 m from the center of rotation? Assume zero friction and no external ...

Science
post.

Science
V1 = -45 m/s. V2 = 30 m/s. a = (V2-V1)/t = (30-(-45))/1.2 =

English
In the poem silk weed which line from the exact rhyme with each other

1. To plan your time for a research project, it is best to (1 point) divide the time spent on each step evenly. keep your deadlines flexible. start at the beginning and plan from there.***** work backward. 2. Which of the following is not a guideline for choosing a research ...

Science
The image above shows the movement of a wave over three seconds. What is the frequency of the wave? A. 2 hz B. 5 hz C. 1 hz D. 3 hz

World History
Did you finish the test? What were the answers?

World History
Did you finish the test? What were the answers?

English
The students elected him secretary.

physics help
A 1.2-kg block slides on a horizontal surface with a speed of v=0.80m/s and an acceleration of magnitude a=3.2m/s2, as shown in (Figure 1) . a<__________ box _________>v What is the coefficient of kinetic friction between the block and the surface? Express your answer to...

Science
Which of the following boxes below represent a stable system? Describe how a disturbance to this box would affect it. Use the terms center of mass and equilibrium in your response. Box A: Shaped like a diamond on a flat surface with an arrow pointing downwards. Box B: A square...

physics
A 9.8-kg monkey hangs from a rope, as shown in (Figure 1) . The tension on the left side of the rope is T1 and the tension on the right side is T2. In the figure, ?=15? and ?=23?. Determine the tension T1. Express your answer to two significant figures and include appropriate ...

physics
please help The pulley system shown in the figure is used to lift a m= 67-kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume the masses of the chains, pulleys, and ropes are negligible. ...

Math
C is correct Solution: 19/25*25000=19000

algebra
-1/5x+5/2=11/5

math
Given: ?ABC is isosceles m?ACB = 120° m?BMC = 60° CM = 12 Find: AB is it 15?

Java
Which of the following classes best represents rare and serious internal system errors? Error Throwable RuntimeException Exception I think it may be Error or Throwable. Been having alot of trouble with this class lately, help would be appreciated. ~Thank you.

math
A frame is 4in. tall and 3in. wide. It it is enlarged to a height of 16in., then how wide will it be?

math
3 in. wide

math
A frame is 4in. tall in wide. If it is enlarged to a height of 16in., then how wide will it be?

math
thank you ms sue

math
Conversions in the Metric System

math
the scale of a map is given as 1:20,000 two cities are 5cm apart on the map. find the actual distance between them

Science
It can't be water.Let's say it's 70% by human and 30% by wind.

Science

Science
They are right 10/10

Maths
12.5

Maths
There are 2 towers that are each 10m high.Â  A rope that is 15m long is strung between the tops of the towers.Â  At its lowest point the rope sags 2.5m above the ground (see schematic diagram).Â  How far apart are the towers?

Maths
Water is flowing at a rate of 15 km/hr through a cylindrical pipe of radius 7cm into a rectangular tank which is 50m long and44m wide. In how many hours will the water level in the tank raise by 21 cm?

physics
a point mass of 12.5 kg is hung from an 18.3 m long rope and swings back and forth with an amplitude of 2.34m. what is the oscillation period for the pendulum system?

math
* What is the average of the first n positive even numbers?

Math help! Check my answers ASAP!
B!tch no they don't

Math
The telephone prefix for a university is 243. THe prefix is followed by four digits. How many telephones are possible before a new prefix is needed?

math
Mieko practice shooting a basketball for 7/10 of her total practice time. During the other time she practiced dribbling, if she practiced dribbling for 18 minutes, how many minutes did she practice shooting?

Divide 4 acres in to 5 lots how much is that
Divide 4 acres in to 5 lots