# Math/Physics

206,302 results, page 72

### Physics

What is the pressure at a depth of 80 m in the ocean? The density of seawater is 1. 03 × 10 3kg/m3. Please express your answer in units of atm.

### Physics

What is the pressure at a depth of 80 m in the ocean? The density of seawater is 1. 03 × 10 3kg/m3. Please express your answer in units of atm.

### physics

A red racecar accelrates at a constant rate of 5 m/s2. How much time does it take to increase its speed from 50 m/s to 60 m/s? a. 17 s b. 0.058 s c. 0.25 s 2.0 s

### Physics

Two parallel forces of magnitude 4 and 6 newton are acting on a body placed at 4m apart. Resultant force will be

### physics

An object experiences an impulse, moves and attains a momentum of 100 kg·m/sec. If its mass is 50 kg, what would its velocity be?

### physics

A body moves with uniform acceleration with a distance x for 1st sec. What is relation b/w x & y? A) y=24x B) y=16x C) y=12x D) y=8x

### physics

a car travelling at 60km/h uniformly retards for 10s and reaches a velocity of 45km/h. find the retardation.

### PHYSICS

A mass of 2kg is dropped from a height of 3m.Neglecting air resistance,KE of the stone just b4 it hits the ground is ?

### Physics

ABC is an equilateral triangle of side 4.0 cm in a vacuum. There are point charges of 8.0C at A and B. Find (a) the potential, (b) the electric field at C.

### Physics.

An electron in a hydrogen atom is revolving around the proton in a orbit of radius r and velocity v .find the current.

### physics

A cars starts from rest and after 20 seconds its velocity becomes 108 km-1 find the acceleration of the car

### physics

In the figure below, the bar is 2.4 meters long and has a mass of 145 kg. To the nearest newton what is the tension in the wire?

### physics

A cylindrical glass is 15cm long its diameter is 7cm. what volume of milk can be poured in it without spilling

### Physics

A fired bullet sounds is heard after2sec .its speed in air is 340m\sec.what is the distance of sound.

### physics

a simple pendulum has a period of 2.0s and an amplitude of swing 5.0cm.calculate the maximum magnitude of the acceleration of the bob

### Physics

If two springs have their spring constants as k1 and k2 (k1>k2 . When they are stretched by same force what will be the relation between their elongations

### physics

Find the force of gravity (in newtons) on a spacecraft 15100 km above the earth's surface, if its mass is 400 kg

### physics

Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 8600 km above the earth's surface.

### PHYSICS

A swimmer is capable of swimming at 1.4m at still water.caculate how far downstream will it smim across 180m?

### physics

What is the minimum work in joules needed to push a 1210 kg car 54.0 m up a 12.5 degree incline? (Ignore friction.)

### physics

A particle is drop from a vertical height (h) and falls freely for a time (t) with the aid of a sketch explain how (h) varies with (i) t (ii) t*2

### physics

On a roller coaster, a student experiences an apparent weight of 1250 N while accelerating at 2.3 m/s^2 [U]. What is the students mass?

### Physics

How much energy must be removed from 30 L of liquid water at 0-degree celsius in order to convert it to ice?

### physics

A cube of ice, 28 cm on each side, is melted into a measuring cup. What is the volume of the liquid water? ------cm3

### physics

Probability of getting two heads among 4 coins Complete the columns r Pr rPr (r - r̄)2Pr 0 1 2 3 4 sum

### physics

Probability of getting two heads among 4 coins for r = 0, 1, 2, 3, 4 find values of Pr, rPr, (r - r̄)2Pr and sum of r

### Physics

if a molecules in a solid has a temp of T = hf/2k then what would be the average energy of vibration 1) 0.88kT 2) 0.47kT 3) 0.62kT 4) 0.31kT

### physics

Explain why helicopters need 2 rotors to fly in a straight line. Talking about centripetal force.

### physics hw

Determine the stopping distances for a car with an initial speed of 87 km/h and human reaction time of 2.0 s for the following accelerations. (a) a = -4.0 m/s2 (b) a = -8.0 m/s2

### physics (science)

A body travels from rest with acceleration 8m/s square . Find its velocity when it has covered a distance of 100m

### physics

A small tiny nail may Pierce an inflated Tyre and remain there without pressure reduction.explain

### physics

A passengers jet flies from one airport to another 1,200 miles away in 2.5h .Find its average speed.

### Physics

At what frequency would a capacitor of 2.5 microfarads used in a radio circuit have a reactance of 250 ohms

### Physics

A Man Of Mass 80kg Carry A Load Of Bricks Of 20kg Up A Vertical Of Length 6m Calculate The Workdone.

### Physics

A Man Of Mass 80kg Carry A Load Of Bricks Of 20kg Up A Vertical Of Length 6m Calculate The Workdone

### physics

Find the limiting velocity of a rain drop assuming diameter of 5.0×10^-4m.The density of air relative to water is 1.3×10^-3

### Physics

Name any Margins of error that would happen in the lab "Which path requires the most energy? (gas)

### physics

a car of mass 800kg attains a speed of 25m/s in a second.calculate the power developed in the engine

### physics

A ball is thrown upward with velocity 5m/s calculate total distance covered by it ?{ Using formulae (v)2 -(u)2. =2gs}

### physics

a uniform rod is 1m caring a weight of 100N calculate its tension of the string holding it an the reaction at the hinge

### Physics

A girl of mass 25kg runs up a stress of total height 3.0m.find the work done against gravity.

### Physics

A ball is thrown with a speed of 19m/s and at an angle of 46 degrees. How high does it go above the cliff to the nearest tenth?

### physics

a car acclerate uniformly from rest andattains a speed of 40m/sin 10second itcoversa distanceof

### physics

A stone of mass 5kg is thrown vertically upwards with velocity 10ms final calculate the height.

### physics

A car of mass 500kg and velocity=36km/h and suddenlybreak applied 150m calculate the force and work done?

### physics

How much heat is required to convert 3kg of ice at -5 degees C into steam at 125 degrees C?

### Physics (Waves)

Determine the intensity of light passing through a polarizer-analyzer combination with an angle of 45° between them.

### Physics

A rock is dropped from a height of 2 meters into a freshwater pond. How would I change the amplitude of this wave?

### Physics

Two pellets, each with a charge of 0.80 microcoulomb (8.0×10−7 C ), are located 2.8 cm (2.8×10−2 m ) apart. Part A Find the electric force between them.

### Maths, physics, chemistry,

The weight of H2C2O4.2H2O required to prepare 500 ml of 0.2N solution is a)126g b)12.6g c)63g d)6.3g

### Physics

An observer on Earth sees you travel 1000 m at half the speed of light. What distance do you think that you travelled?

### physics

if some of water in calorimeter splash out when tranfering the metal block, will it affect the experiment result?

### physics relativity

How fast would you need to be travelling relative to an observer in order for them to see a 15% increase in your mass?

### Physics

In relativistic regimes, the total energy of an object with rest mass, m, speed, v, is: a); (Gama)mc^2 B);squre root of (m^2c^4 + p^2c^2)

### Physics

How much time is needed to produce 840 joules of work if 100 watts of power is used?

### Physics

This is about em spectrum? What are the effects of differences in the velocities of electromagnetic waves in different substances... long !@#$%^& question

### physics

if the gravitational constant, increased to a billion times its actual value, what sorts of things would happen?

### physics

A bullet is fired in to s wall losses half of its velocity after penetrsting 3m.how much further will it penetrate.

### physics

Two point charges, Q1 = -2.3 μC and Q2 = +9.3 μC, are placed as shown in the figure. The y component of the electric field, at the origin O, is closest to

### physics

A man walked 5cm east and 10cm north calculate the distance covered and the magnitude of his displacement

### physics

Consider the motion of the tip of the minute hand of a clock. In one hour, the displacement and average velocity is .......

### Physics

What is the efficiency of a crane that used current of 8A at 150V to raise 450kg load at the rate of every minutes?

### Physics

An object weighs 100N on the earth's surface. Find its weight at a point P with orbital radius 2R. [g = 10NKg-1

### Physics

force 15i -16j N is added to another 23i N. In what direct measured from the positive x-axis does the resultant act?

### 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?)

### Physics

Note: I am in Algebra-based Physics Two 35.0 N weights are suspended at opposite ends of a rope that passes over a light, frictionless pulley. The pulley is attached to a chain that is fastened to the ceiling. Start solving this problem by making a free-body diagram of each ...

### Physics

During an action potential, Na^+ ions move into the cell at a rate of about 3x10^-7 mol/m^2*s. How much power must be produced by the "active Na^+ pumping" system to produce this flow against a +30-mV potential difference? Assume that the axon is 40cm long and 30um in diameter...

### Physics

0.75 mol of argon gas is admitted to an evacuated 40 cm^{3} container at 40 C. The gas then undergoes an isochoric heating to a temperature of 500 C. Before I forgot to write the question...so the question is What is the final pressure of the gas? * physics - drwls, Friday, ...

### Physics/Math

A certain string can withstand a maximum tension of 43 N without breaking. A child ties a 0.37 kg stone to one end and, holding the other end, whirls the stone in a vertical circle of radius 0.91 m, slowly increasing the speed until the string breaks. Where is the stone on its...

### Physics- Mastering Physics

Predict how the range of the projectile will change when you change the angle from 45∘, keeping the speed constant. A The range increases with increase in angle and decreases with decrease in angle. B It increases with either an increase or decrease in angle. C It ...

### life science , geography , history and math literecy

I am a grade 11 student and want to follow careers linked to geograpy . My problem is that most of the careers I am in interested in want pure math and im doing math literecy . My question is that , Is it possible for me to start mathematics in University so that I can follow ...

### Math( 7th grade advanced math so 8th grade math)

Bacterial populations can grow to enormous numbers in a matter of a few hours with the right conditions. If a bacterial colony doubles size every 15 minutes, how many bacteria will be present after 1 hour if the colony began with 4 bacteria?