# Math/Physics

211,502 results, page 74

### Math

What is "mental math" and give examples. 4th grade

### Math

for my math project I have to know how much mass is in a superball. . . . THANKS!

### Math

Can anyone help me with this equation in math. here it is..... 5x x 18.75=93.75 does anyone no how to convert this into the anwser?

### math

can someone unscramble these math words reaoprddrie enitmelgens

### Math 213 Elementary Math

List all the subsets of {2, o, t}.

### Math 213 Elementary Math

1. List all the subsets of {2, o, t}.

### math

Accoring to math teachers, what did the acorn say when it grew up?

### Math

Can anyone tell me where i can get IGCSE Extended math past papers?

### Math

unscramble the letters UEEMTTRARR to make a math word

### Math

Can someone tell me what allegro mean in math terms?

### math

explain how you can find the sum 25+59 using mental math

### math

looking for any mathematical characteristic of the number 13 for a math project

### Math

what is the total width of 21 math books that are .78 centimeters thick

### math

Is 2340 divisible by 90 how do you know? In Math please answer quick

### MATH

why do we use some math things that isn't going to help us in the future?

### math -discrete math

Calculate P({{x}})x P(P({{{x}}})) Find the power set.

### math

Is it reasonable for a 7th grader to use a calculator for math?

### Math/116

I need some help with my math lab week 7

### 8th grade math

I need to know how to work this math problem: 3n + (-7) -5n +1

### math math

How do you write the solution to represent the point if intersection?

### math

examples of role play in math with dialogues and characters

### math

I have a math question abdedbabde 1234321234 how do I do this problem

### Math

What does "standard form" mean in 3rd grade math?

### Math

According to math teachers what did the acorn say when it grew up

### Math math

Write the number for 3 hundred plus 5 teens

### Math

How do you get the big number on a runaway math puzzle worksheet

### Math

If I had a math problem of 3n^4/3n^3 would my answer be 1n^1 which equals to n^1?

### Math

the math problem is 8 3/5 divided by 1 2/3 =5 4/25 how do you answer with bar models

### math

explain how to use mental math to find 700 x 8

### Geometry

Quadrilateral MATH is a parallelogram. The perimeter of MATH is _____.

### Math

Can you explain this: For my math problem 23 4/7 divided 4 it says to estimate. What do I do?

### Math

file:///G:/STAAR-G7-2014Test-math.pdf please help

### math

I need 1 paragraph explaing where math came from for my uncle

### Math

What are equal intervals? I have a math question that deals with them but I don't what they are.

### Math

How do I use the distributive property to rewrite the math problem 5(4 - y?

### Math

What is mental math in times 3 digits like 8times25times23?

### MATH

I NEED HELP WITH MY LEAP MATH MIDTEST QUESTIONS STAT!

### Math

Did John Cena ever do math? It doesn't look like he did..

### Math

Has anyone taken the leap practice math pre-algebra (8/6/GT)??

### physical science

How much heat is required to raise the temperature of a 10.0 kg of aluminum by 80 degrees Celsius? Look up the specific heat of aluminum. The units will be Calories/kg*degC or Joules/kg*degC. Multiply that number by the temperature change (80 C) and the mass (10.0 kg). See ...

### physics

light travels from ethanol intro crown glass. what's the brewster angle in this situation? illustrate your answer with a light ray diagram. what's the signifcance of this angle of incidence? n1=1.36for ethanol nR=1.52 for crown glass tanangleB=nR/ni =1.52/1.36 =1.12 (48.2 ...

### math help

i need to use mental math and the distributive property to simplify: can you pls check if this correct? a) 19(-6) i got: -114 or do i do like this: 10*(-6)=-60 9*(-6) =-54 -60 + -54= -114 b) 102* $21 i got: $2142 or do i do mental math like this: 100*21 = 2100 2 * 21 = 42 2100...

### Physics

Ammeter 1 reads 0.20 A. a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22-OHM RB = 13-OHM A1 = 0.20 A Ammeter 2 reads 0.15A. a. Find the voltage across the 22-ohm resistor? b. Find the voltage across the 15-ohm resistor? c. What is the ...

### Math/Physics

Thanks in advance, these problems have been stumping me. Please include answers though, I have tried to work it out, but need answers to see where I am going wrong/where I need to go. 1. Determine all solutions for X^4+2-3i 2. Forces of 60 and 100 pounds have a resultant force...

### Math xc

I've tried and tried to answer this question..I just hate math and math hates me. So let's get to the point why you are all here 1:Find the unit price for each option below. Round to the nearest cent when necessary. Indicate which option is a better buy. Option 1: 10 candybars...

### Physics

On a mass of 100 kg, a force of 120 N acts right and at an angle of 30 degrees to the horizontal. If the coefficient of sliding friction is .1 what is the acceleration of the mass? 100N* cos30 -(100sin30+mg)(.1)= m*acceleration does "m*acceleration mean the acceleration of the...

### Physics please clarify

A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.135 m). The charges on the circle are -3.20 µC at the position due north and +5.00 µC at the position due east. What is the magnitude and ...

### physics

A firefighter at street-level, 55.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 35.0° above the horizontal. If the speed of the stream is 50.0 m/s, at what height will the stream of water strike the building? I started by finding ...

### Math

my daughter is working on a math problem called factor capture have any idea as to the rules for understanding it

### Math

My daughter has a math paper that asks to make a stem-and-leaf plot of data. I have no idea what this is!

### math

what would be the equation of a line that has a slope of -2 and passes through point (3,5)? Please help! Math test tomorrow:(

### math

Trying to help son w/math. Mom needs help please! translate the statement. (The product of a number increased by 10 and 4 is 22)

### Math

I need help with this math question: What percent of 400 is 12? Can you please write down the steps and the answer to this problem?

### math

unscramble these letter for a 5th grade math question dealing with fractions and decimals. the letters are IPDLISAF

### math!! help pleaseee

5: 2 = 8 : 10 please explain to me how to do thissss :( im so lost and i have to one to turn to or any math books or anything.

### Reiny+Damon

Can you reply to my last math+log post =) thanks. I'm going to be having alot of math questions today.

### Math

I need some help with my math.. It says is each equation a direct variation? If it is find the constant of variaton. 32. f(x)=-3x 34. y=2x+5 I don't get how to do these.. please help me.

### math

I am doing 4th grade number sense are there any cool math tricks or short cuts that would be good for me to know.

### math

2nd grade math question Show how you would explain "Make a 10" to someone who never heard of it.

### math

What are some suggestions teachers can give to parents so that they might assist their children with unfamiliar math concepts?

### Math

Show all work solve the Math: Polynomial inequality and express the solution in set notation. 2t^2 - 3 < or = to t

### Math

How do you find the surface area of Prisms and cylinders? The stuff in my math workbook does not help me like at all! Please Help!

### math

in my math book i got a question that said order these number from least to greatest 0.09,3/25,8,0.1. My answer is 0.1,8,0.09,3/25 am i correct. Thanks.

### Math

I'm doing a project and I have looked everywhere for this answer. It's if using 50 math tiles how can you make the smallest area?

### Math

Math Question: winning time of a marathon is 1 hour, 24 minutes and 11 seconds... How do I find the average speed?

### To Reiny, math helper

can you look at my post, its just 4 math terms I need to figure out, please help

### Math

If I had the math problem: 2^4 x 3^9 ---- ---- 3^5 2^7 And I used the method of sorting the bases and subtracting the exponents. Would my answer be 2^-3 x 3^4?

### math

use integer values of x from -3 to graph the equation. (the x has a 2 above it,like to the second power) y=-2x+3 I don't know how to do this kind of math.

### math/algebra

I am having a hard time with math I cant get it. Write each rational number as a terminating decimal. 19/20, 1/8, & 17/5 can you please help!!

### 4th grade Math

What is an expression that can be used to find 4 x 275 using mental math and properties of numbers?

### math

Describe a situation this week when you used math to solve a problem involving data, graphs and statistics.

### math

I'm very confuse my teacher talk bout her life in never teach us students the math lesson. y=3/2x-1 y=-x+4

### Math

Can you drop your email for my math question?Its on Google classroom and it has a picture that does not copy onto jiskha's homework help

### Math

I'm doing my math homework. 25*f=100 or twenty-five times something equals one hundred? Please help me.

### math

create a tree diagram to show all possible arrangements of the word "MATH" how many outcomes exist?

### English

1. Boys are better at math than girls. 2. He is the best at math of all the students in his class. (Are both grammatical?)

### Math

Find the mode of the set of data 59,61,54,51,38 46,56,52,63,40,44 1.B 2.D 3.C 4.A 5.D 6.C 7.B 8.C 9.C 10.C 11.B 12.D 13.B 14.A 15.A 16.A 17.D 18.A 19.C 20.D Math lesson:10 Unit:2 Practice test 100% answers

### Physics

Simple Harmonic Motion With the equation x=Acos(2 pi f) t why and how does f affect x This is really urgent! Thanx for any help! frequency determines how rapidly x oscillates.

### physics

If you cover your home thermostat with a blanket, will it make the house hotter or colder, or have some other effect?

### Physics

The sum of 2 vectors is the smallest when the angle between them is : a) 0 b) 45 c) 90 d) 180 d) i believe is the correct answer but i'm not sure exactly. Thanks in advance for your help.

### physics

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km?

### physics

The path of a projectile fired at a 30 degree angle to the horizontal is best described as 1.parabolic 2.linear 3.circular 4.hyperbolic

### physics

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i got the answer to be 13062.5 N. i don't think that's right...

### AP Physics<<help

A 1.7 kg bundle starts up a 30 degree inlcine with 105 J of Kinetic Eneergy, How far will it slide up in the plane if the coefficient of friction is .3 ?

### Physics

A,B,C,D are four charges placed at each corner of a square, with A= -6.00 mC , B=6.00 mC, C=-6.00 mC and D=6.00 mC.ALso AB=BC=CD=DA=0.100 m.Determine the magnitude and direction of force on each charge.

### physics

How close must two electrons be if the electric force between them is equal to the weight of either at the earth's surface?

### physics

a 1200-kg automobile travels at a speed of 90-km/h (a)what is the kinetic energy? (b) what is the net work that would be required to bring it to a stop?

### Physics

How long does it take a 19 kW steam engine to do 6.8x10^7 of work? I have no idea how to solve this... Would someone please help?

### physics

what is the formula for finding the magnitude of average acceleration simplified into length, velocity, time, and delta units?

### Physics

Find the orbital velocity of a satellite orbiting 1800km above sea level in meters per second?

### Physics

A ball falling from rest is located 45 m below its starting point 3.0 s later. Assuming that its acceleration is uniform, what is its value?

### Physics

heyy, we need help finding links on the internet that provide you with simple questions based on dimensions and dimensional analysis.

### Physics

How long would it take for a beam of light to travel around the earth in an ideal fiber-optic cable?

### Physics

By how much shoould a pair of light rays from a common source differ in length to produce destructive interference?

### Physics

What is the color of all the visible light frequencies mixed together equally? I would think white. Is that right?

### Physics

If U-238 splits into two even pieces, and each piece emits an alpha particle, what elements are produced?

### Physics

According to special relativity, the momentum (mv) of an object at relativistic speed is actually: more, less or no different than if it were at rest

### physics

What constant net force is required to bring a 1500 kg car to rest from a speed of 100 km/h within a distance of 55 m?

### Physics

What is the shortes possible time in which a bacterium could travel a distance of 8.4 cm across a Petri dish at a constant speed of 3.5mm/s?