Amir

This page lists questions and answers that were posted by visitors named Amir.

Questions

The following questions were asked by visitors named Amir.

Hi. I'm not sure if my strategy for this problem is correct: How many grams of CaCO3 will dissolve in 3.0x10^-2 mL of 0.050M Ca(NO3)2? I think I'm supposed to convert molarity of Ca(NO3)2 into moles, but then i don't know how to get from mols of that to m...

2 cyclists start at the same tiem from opposite ends of a course that is 45 miles long. One cyclist is riding at 14 mph and the second is riding at 16mph. How long after they begin will they meet?

At 11:00am a car (1) leaves city "A" at a constant rate of 60 mi/hr toward city "B". AT the same time a second car (2) leaves city "A" at the constant rate of 50 mi/hr. The distance between cities A and B is 220miles and a highway used by the two cars con...

James and tom are in 2 cities which are 186 miles apart and travel towards eachother. James' average rate was 32 mph, and Tom's average ratewas 36mph. If James started at 9:00am and Tom's startes at 9:30 what time did they meet? I need help settign up the...

John took a drive to town at an average rate of 40mph. In te evening he drove back at 30mph. If he spent a total of 7 hours traveling, what is the distance traveled by John? Please set up the boxes and help solve.

A bus and a car leave the same place and travel in opposite directions. If the bus is traveling at 50 mph and the car is traveling at 55 mph, in how many hpurs will they be 210 miles apart. Again please help me with the boxes, Im in advanced math and I'm...

What roles do these systems play in supporting cellular respiration? -digestive system -repiritory system -circulatory system

Solve the inequality: absolute value of x+is greater than or = to1. What form do you put it in? I missed class, and would appreciate someone telling me how to do this problem. Thanks!

Solve the inequality: Absolute Value of X+5 is greater than or equal to 1. I'd appreciate someone telling me how to solve it and get the answer. Thank you

My question is how does metal corrosion affect a reed switch? This question is from my textbook. We are following cambridge igcse science.

If you cut a magnet in half does each half become a magnet. Give a clear explanation to your answer.

What is the difference between magnetic field of a bar magnet anf the magnetic field around a current-carrying coil? Please answer with a good explanation.

Sulfur Trioxide can be dissolved to form sulphuric acid. But it is avoided since the reaction is violent. Explain why?

Please help me solve this equation -5t+2=-2t*2

x^2+y^2=86 and xy=(-16), Find the value of (x-y)^2 Please help i am a bit tense today so i can't figure it out.

Metal expands more than glass when both are heated. How can this fact be used to help open a metal screw top on a glass bottle which appears to be stuck?

Say what energy changes are taking place: a)clockwork toy b)boy kicking soccer ball c)boiling kettle on a gas ring d)person walking upstairs What are the wasted energy in a) b) c) and d)?

This is definitely not homework. I just want to know what would be the best book for preparing my self for the SAT.

I am currently outside USA. Now in Asia we follow the Cambridge igcse curriculum. If I move to USA can I still get into an Ivy League college?

8 csc theta - 2=10 + 2 csc theta I can't do it. :S

Please explain the process of diffusion.

Hydrocarbons A and B both contain 85.7 % carbon. Their molar masses are 42 and 84 respectively. a) Which elements does a hydrocarbon contain? b) Calculate the empirical formula of A and of B. c) Calculate the molecular formula of A and B. I solved a) and...

You need to prepare 2 M solutions, with 10 g of solute. What volume of solution will you prepare for ammonium nitrate, NH4NO3?

g(x) = 3x+5 / x-1 find the inverse function

solve 4 sin x = cos x for 0<X<360

3+siny = 3cos^2 y for 0<Y<360

prove that (cotx+tanx)(cotx-tanx) = 1/(sin^2 x) - 1/(cos^x)

THE LINE Y=X+4 INTERSECTS THE CURVE 2X^2 + 3XY - Y^2 + 1 = 0

prove that sinA/(1+cosA) + (1+cosA)/(sinA) = 2cosecA

2y^2 -8y -3 = 0 please solve

2y^2 -8y -3 = 0 please solve

2y^2 -8y -3 = 0 please solve

2y^2 -8y -3 = 0 please solve

2y^2 -8y -3 = 0 please solve

balance this equation NaOH + H2SO4 = NaSO4 + H2O

An ice cube at 0.00 degree celsius with a mass of 23.5 g is placed into 550.0 g of water, initially at 28.0 degree celsius, in an insulated container. Assuming that no heat is lost to the surroundings, what is the temperature of the entire water sample af...

The area of the base of a cubiod is 44cm.Find the height,If the volume is 378.4 cm

A hockey puck is given an initial speed of 6.7 m/s. If the coefficient of kinetic friction between the puck and the ice is 0.08, how far (in m) does the puck slide before coming to rest?

28g of NH3 is dissolved in 500mL of water. What is the concentration of the resulting solution? (I do not understand how to solve this. If you can explain, that'd be great!)

If gene frequency between genes a and c is 2%; b and c is 13%; b and d 4%; a and b 15%; c and d 17 and a and d 19%. What is the sequence of genes in a chromosome ? Explain your answer with the help of a diagram.

Solve the following system of linear equation by Gauss Jorden Method 3x1 + x2 + x3 + x4 = 0 5x1 − x2 + x3 − x4 = 0

Immigrants and Minorities in the West Quiz

Answers

The following answers were posted by visitors named Amir.

The answer is A)11. In my country we do this in grade 7. You just need to use unitary method.

thanks a lot. I really apreciate your help.

See how to solve from a pro who is undergoing IGCSE courses which are better than US High School courses mgh=1/2mv^2 1/2mv^2=mgh mv^2=2mgh V^2=2mgh/m V= square root of 2gh

A 2 kg box slides down a 25 degree ramp with an acceleration of 2 meters per second. Determine the coefficient of kinetic friction between the box and the ramp?

how do i know if the tangent is positive in the third quadrant?

thanks for the help. im still a bit confused.,, [23.5g x 6.02] + [? x 2.09 x (Tfinal- 0)] + [550.g x 4.184 x (Tfinal- 28.0)] = 0 is this right so far? How would you be able to get the mass of melted ice?

K2= +1 Cr=+6 o=-2

1<p<12 Therefore a=1 b=12

define X as the number of acres of planted corn. hence, the number of acres of planted wheat is 1200-X. from here you can figure out the simple equation: (275*X)+(125*(1200-X))=244500 and the only solution is X=630 acres which is the correct answer.

A small harbor where small boat can dock

I am trying to solve this as well

Use two equations to get di and do. First, 1/f=1/do+1/di (textbooks usually use p and q). Also, M = -di/do. Since the image is real, di is positive and M is negative (image is upside down). Using the second equation, -2.5 = -di/do. Solving for di, di=2.5*...

Solve the following system of linear equation by Gauss Jorden Method 3x1 + x2 + x3 + x4 = 0 5x1 − x2 + x3 − x4 = 0