Nelly

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

Questions

The following questions were asked by visitors named Nelly.

if the concentration of NO3- in the water is uniformly 5 microMolar, how many moles of N are there per square meter?

how many grams of water at 0 degree C can be frozen into ice at 0 degree C if 55.0 kJ of heat is removed?

The capacitor that powers the flash in a camera is charged using ^.0V battery. after that capacitor is charged, it is discharged through the flashbulb in just 1.0 microsec. with avg power output of 20 w. whats is the capacitance?

Air will break down as a dielectric when subjected to applied fields in excess of 3 * 10^6 N/C. a parallel plate capacitor using air as a dielectric has a capacitance of 1.0nF and a separation b/t plates of 1.0micrometer. how much energy U was stored in t...

A mass spectrometer as shown in the attached figure is used to separate isotopes. If the bean emerges with a speed of 363 km/s and the magnetic field in the mass selector is 1.4 T, what is the distance between the collectors for 235U+1 and 238U+1? The mas...

A railway track travelling along a level at 9 m/s collides with, and becoms coupled to a stationary truck. Find the velocity of the coupled trucks immediately after the collision if the stationary truck has a mass which is : A ) equal to the mass of the m...

Two planes of the same mass collide head-on and becomes tangled so that they move on together. If the engines of both were stopped at the moment of impact and the speeds of the planes at impact were 120m/s and 200 m/s, find the joint velocity immediately...

How to write an algorithm to find the fibonacci series ??? Help:/

A cannon of mass 200kg, fires a cannonball with a mass of 10kg. The cannon ball leaves the barrel of the cannon with a velocity of 60 m/s. Using the law of conservation of momentum , explain what happens to the cannon when the cannon ball is fired. (Answe...

What provides the centripetal force : i)on the elctron orbiting the proton in a hydrogen atom ii)satellite orbiting the planet iii)on the child being whirled round in a chair on the end of a chain in the fairground ride ? Ayuada por favorr :)

How to integrate / combine two different programs together ??? :/

A science lab needs a right circular cylindrical container that holds 15 gallons of liquid & is 24in tall. A reference manual states that 231 cubic inches is equivalent to one gallon. What is the approximate radius, in inches, or the container?

How much energy would your body need to provide for the following : a)sweating and evaporation of 1kg of water from your skin. b)heat loss by radiation at the rate of 100 wats for 12 hours. (the specific latent heat of vaporisation of water is 2.3MJkg-1)

An Electricity account shows that a household has used 1400 units of electrical energy during a three month period. Calculate : a)the number of joules of energy used in this time. b)the average number of joulesof energy used perday . c)the average power c...

Wha advantage could the following traits be to the organism ? a) Larger leaves b)Green Leaves c) More seeds d) Brightly coloured flowers

Can someone plz answer my 2 previous question ???

Ok when your plotting a graph of Sin angle i against Sin angle r , which of those goes on the y axix ??

Ok when your plotting a graph of Sin angle i against Sin angle r , which of those goes on the y axix and which goes on x axis??

How to find refracticive index ?

The antireflecting coating works best if its refractive index is the square root of the refractive index of the lens inthe eye glasses. a) determine the refractive index of the lens that gives the best results

The function f and g are defined by : f:x --> 3x+1 g:x --> 9-x Determine the expression for the function gf(x) .

Two functions g and h are defined as : g:x--> 2x+3/x-4 h:x --> 1/x Write expressions for : a) hg(x) b) g inverse 1(x)

Given that f:x -->3-x g:x --> x+2/x-5 derive the expression for gf(x)

Two functions g and h are defined as : g:x--> 2x+3/x-4 h:x --> 1/x Write expressions for : a) hg(x)

A geologist discovered a new rock which he suspected contained an oxide of an element called mysterium. He gave thr ock to a chemist who ground it up and heated a sample with carbon at a high temperature. No metal was produced in this experiment. 1.Why di...

5 ways in which human problem impacts on community.and the relavent sources to support claims.

Find n if S(sub n) is approximately 15,408.15.

Which of the following sentences is the refusal implied rather than directly stated

g(x)=5x^2+3x+2 Compose g(g) and find domain

F(x) = (x^3 - x + 1)^4 f'(x)=

1, Identify five practice that are in contravention of the basic conditions of employment ACT. 2,What according to the basic conditions of employment ACT applies with regard to the contravention that you have identify

Calculate the lenght of a rectangle with area 350cm and breadth 50mm.

Calculate the breadth of a rectangle with lenght 120mm and area 960m

Calculate the side lenght of square with area 25m

Calculate the area of a triangle with base equal to 18cm and height equal to 9cn

Calculate the height of a triangle with base equal to 142cm and area equal to 62,48cm

Draw an equilateral triangle ABC with side length 4cm to scale and then draw dotted lines to show all axes of symmetry of this triangle

what are the dangers of radioactive isotopes?

if a die is tossed four times what is the probability of getting one six

if a die is tossed four times what is the probability of getting three odd numbers

if a die is tossed four times what is the probability of getting anything but a five on every toss

if a die is tossed four times what is the probability of getting at least one six

If p(A)=.50, p(B)=.60, and p(A and B)=.30, Are A and B mutually exclusive events? and independent events?

It is possible to become a paramedic while doing those subjects?

A sinusoidal function whose frequency is 3, maximum value is 12, minimum value is −6 , and y-intercept is (0, 3) . Which function could be the function described? f(x)=9sin(6πx)+3 f(x)=9sin(x3)−3 f(x)=9sin(3x)+3 f(x)=9sin(6πx)−6 <my answer

A cosine function has a period of 3, a maximum value of 20, and a minimum value of 0. The function is a reflection of its parent function over the x-axis. Which function could be the function described? f(x)=10cos(3x)−10 f(x)=10cos(2π3x)+10 <my choice f(x...

Can I qualify to be a clinical psychologist Maths literacy, geography, economics, Business St

The length of the ramp leading to the overpass is 300m and the overpass is 10m above the ground below. Determine the angle of elevation of the ramp (Pls also include the formula)

which numbers are equivalent to -11/4

A cost of a shop is partly constant and partly varies as the number of c and n

A courier service company has found that their delivery time of parcels to clients is normally distributed with a mean of 22 minutes and a standard Deviation of 4 minutes. What is the probability that a randomly selected parcel will take less than 13 minu...

The universal set, U, is the numbers from 12 to 40 ( including 12 and 40 ), set A is the multiples of 4 in U, and set D is the multiples of 8 in U

How to solve the statistics problem

What is the value of (2/3)-^3

A school employs teachers in the ratio 1:20 number of children. If the school has 600 children how much many teachers they need

240 decreased by 15%

1/3 is it a rational number

1/3 is it a rational number only

What is the HCF of 162 and 270

Square root of 1600/0,1×0,1

The overnight temperature in Polokwane drops from 11 degree Celsius to -2 degrees Celsius. By how many degrees has the temperature dropped?

Simplify square root of 625/10000+1/2

5,8×10^3×2,3×10^-7

3 square root of 27 +(-^3 square root of 64

Simplify 3^3-4^3-2^3-1^3

(-5)^2/square root of 37-12

If 4,5kg sugar costs R36 what will 2,5kg of sugar cost

Sussex buys a car on hire purchase. The car cost R130000. She pays a 10% deposit on the cash price and will have to pay monthly instalments of R4600 for three years. David buys the same car but chooses another option where he has to pay a 35% deposit on t...

SUZE bought a car on hire purchase the car costed R130 000 she paid deposit of 13000 and a monthly instalments R4600 per month for three years what was the interest of the cash price

R48 600 as a percentage

If you buy a car on credit the car costs R130 000 then u deposit it for R130 00 and pays monthly instalments of R4600 for two years How much interest was charged

Siphon has R5000 to invest for 10 years bank offers him 6,5 compound interest per year. His uncle offer him 7,5 on simple interest which investment is best for 10 years

How long will it take for an investment of R3000 at 8% per annum simple interest to earn R960 interest

5KG BAG OFAPPLECOST R65 WHAT IS THE 500 G OF apples

Approximately how many apple will have a mass of 1 kilogram

Answers

The following answers were posted by visitors named Nelly.

The big idea of energy transfer is the idea of a source of energy being changed into another form of energy such as light energy to heat energy. This effect happens in global warming were chemical energy is transfered into heat energy with a greenhouse ef...

do i need to square the 10 meters so that it is 100 meters?

how would it be worked if you have 1 square centimeter instead of the 1 square meter?

i worked it out to equal 1 Liter. is that correct?

its 6v battery.

I am guessing its Friction :)

Second one ! [I think] :)

:D Thank Yoouu !!

Why is it 200v ??Is the formula used : m1v2+m2v2=(m1+m2)v ??? Confusedd

lOl okk thenn :)

Okk ! SO I am not completly suree about this : The No. of overtime worked = the overtime wage / overtime rate :) Someone Plz Clarify

ThankYou Sra (:

drwls here it is : How much energy would your body need to provide for the following : a)sweating and evaporation of 1kg of water from your skin. b)heat loss by radiation at the rate of 100 wats for 12 hours. (the specific latent heat of vaporisation of w...

how do u get the 3 ?

how to combine ?? that's wat i have problem withh ??

MR. BOB PURSLEY HELP ?/

QUICKLY AND THOROUGHLY N DAILY ?

still don't understand how to combine this . can u show me ?

600,000=_______ten thousands

It is [15/(3x5)+4]x8

No, it wouldn’t. The whole recipe is 8 7/12

To what is this related

My community is rural settlement

GENEVIEVE IS CORRECT!! USE HER ANSWERS!!

Which statement about the senate is true

Define the concept of risk behavior

I will to help people with their futures

Discuss four ways in which one's acceptance of responsibility can influence effective communication

I don't know Because we don't have any community projects in our community

Work done= force × distance 100= 30 × x 100=30x 100\30=x X=3.3