Ask a New Question

Questions and answers by

James

Questions (1,513)

Find the derivative of -8x²-5x+13 using first principles
1. 5 answers
2. 199 views
Find the derivative of -8x²-5x+13
1. 1 answer
2. 141 views
A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium
1. 9 answers
2. 284 views
He' ions with a charge +e move at 1.00 x 10 m/s in a straight line through a velocity selector. Suppose the He' ions are
1. 1 answer
2. 199 views
How many milliliters of each solution of 0.50 M KH2PO4 and 0.50 M K₂HPO4 are needed to make 100.0 mL solution of phosphate
1. 3 answers
2. 249 views
At 1280°C, the equilibrium constant for the reaction Br2>2Br is 1.1×10^-3. IF the initial concentration are Br2 = 6.3×10^-2
1. 13 answers
2. 254 views
The solubility of lead chromate is 4.5×10^-5. Calculate the solubility product of this compound
1. 1 answer
2. 144 views
Prove the identity cot x + tan x = sec x cosec x
1. 1 answer
2. 187 views
The atmospheric pressure above a swimming pool changes from 755 to 765mm of mercury. The bottom of the pool is a 12m x 24m
1. 1 answer
2. 233 views
Water is flowing at a rate of 3 m/sec in a horizontal pipe under a pressure of 200,000 N/m. If the pipe narrows to half its
1. 1 answer
2. 209 views
Integrate cos⁴ x ÷ sin^7
1. 5 answers
2. 163 views
A particle of mass 0.20 kg is attached to one end of a light inextensible string of length 50 cm. The particle moves in a
1. 1 answer
2. 288 views
A hydrometer floats in water of density 1.0g/cm³ with 6.0cm of its graduated stem above the water level, and in oil of density
1. 1 answer
2. 234 views
Integrate e^cos 3x dx
1. 1 answer
2. 134 views
A rescue plane drops a package of emergency rations to a stranded explorer. The plane is travelling horizontally at 40 m/s and
1. 1 answer
2. 243 views
A sample of helium gas has a mass of 11.28 g. At STP (T = 25 C, P=101.3 kPa), thesample has a volume of 63.2 L. What is the
1. 2 answers
2. 251 views
The overpressure (pressure above atmospheric) in a horizontal fire hose with diameter 64 mm is 350 kPa and the speed of the
1. 1 answer
2. 377 views
Integrate x²/e^x dx
1. 1 answer
2. 144 views
integrate (20y ^ 3 + 10y) dx from 0 to 2
1. 3 answers
2. 359 views
Balance the equation of the reaction between Ba(OH)2 and HOBr
1. 1 answer
2. 153 views
A solution of Ba(OH)2 is titrated into a solution of HOBг.(i) Calculate the volume of 0.115 M Ba(OH)2(aq) needed to reach the
1. 3 answers
2. 233 views
A rescue plane drops a package of emergency rations to a stranded explorer. The plane is travelling at 40m/s and at a height of
1. 1 answer
2. 250 views
A boat is being pulled by two horses, the first horse at an angle of 40° and the other one at 20°, considering that both the
1. 1 answer
2. 188 views
A boat of mass 350kg starts off from rest and travels a distance of 60m in 10s at constant acceleration, find the net force
1. 1 answer
2. 212 views
A cube with a side length of 15cm is made of wood. It floats at the interface between oil (p = 800kg/m^3) and water with its
1. 1 answer
2. 209 views
How to determine if a limit is continuous or not
1. 1 answer
2. 114 views
Evaluate limit of 1/(x⁴+6x+2) as x approaches 0
1. 3 answers
2. 146 views
Evaluate limit of 3√(x²+7) as x approaches 3
1. 1 answer
2. 127 views
Given that x²y²=cos(x²y²). Find dy/dx
1. 3 answers
2. 275 views
Doctors have to attend to a patient on top of a building using a 50 m ladder before s/he is evacuated to a hospital. The ladder
1. 1 answer
2. 209 views
find the equation of the tangent to the curve x²y+y³=x-7 at (1,2)
1. 5 answers
2. 145 views
derivative of h(y)=log (y²+4y)
1. 3 answers
2. 79 views
derivative of h(y)=log(y²+4y)
1. 1 answer
2. 72 views
Differentiate y=cos^5(4x)
1. 1 answer
2. 120 views
Find the definite integration of sin(4x+π/6) dx which has π/6 and 0 as limits
1. 1 answer
2. 107 views
Integrate sin(4x+π/6) dx
1. 1 answer
2. 100 views
integrate 4xcos4x dx
1. 1 answer
2. 107 views
For the equation, N2+3H2 = 2NH3 where the Kp is 4.3×10^-4 at 375°C. Calculate the Kc for the equation
1. 1 answer
2. 186 views
Integrate (x²+1)/[(x+1) (x+2)] dx
1. 3 answers
2. 124 views
What positive statement would fit a position were you want to tell someone about the death of his mother
1. 1 answer
2. 112 views
What statement would be great to tell a person that he has lost his mother but it should be positive
1. 1 answer
2. 127 views
A system has a mass of 600kg and a cross section area of 0.08m². Te piston on the right has a cross sectional area of 0.0025m²
1. 1 answer
2. 148 views
Suppose you have two charges, +4nC at point A and -6nC at point B that are separated by a distance of 100cm. What would be the
1. 1 answer
2. 171 views
What is the pH of a buffer made by mixing 1.00 L of 0.020 M benzoic acid, HC,H,O,, with 3.00 L of 0.060 M sodium benzoate,NaC
1. 1 answer
2. 167 views
Integrate 1/√x(1+x) dx
1. 1 answer
2. 115 views
Integrate (x-x³)/x³ dx
1. 1 answer
2. 94 views
Integrate (x-3) ²dx
1. 1 answer
2. 143 views
We want to construct a sample box for transporting medicine that should have a square base, and we only have 10m² of material
1. 1 answer
2. 146 views
Integrate x cos 5t dx
1. 3 answers
2. 101 views
Integrate ln 2
1. 3 answers
2. 107 views
Hypobromous acid, HOBr, is a weak acid that dissociates in water, as represented by the equationbelow: HOBrag) Haq) + OBrag
1. 1 answer
2. 175 views
(a) A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium
1. 3 answers
2. 224 views
Find the equation of each normal of the function f(x) = 1/3 * x ^ 3 + x ^ 2 + x - 1/8 which is parallel to the liney=- 1 4 x+ 1
1. 3 answers
2. 129 views
What are war reparations?
1. 1 answer
2. 108 views
The “proof” of an alcoholic beverage is twice the volume percent of ethyl alcohol, C2H5OH, in solution. For an 80-proof rum,
1. 1 answer
2. 214 views
A soccer ball is booted from the ground at an angle of θ = 44 degrees with respect to the horizontal. The ball is in the air
1. 2 answers
2. 167 views
87 392 to the nearest 5
1. 2 answers
2. 185 views
is each term a cause or an effect of water pollution? Drag each term to the category it matches
1. 1 answer
2. 321 views
Which of the following is an example of industrial water use
1. 1 answer
2. 110 views
A large toy car has a mass of 15 Kg and is pushed horizontally with a force of 3 N. Assume friction is so small it can be
1. 1 answer
2. 107 views
A cell phone company charges a monthly fee plus $0.25 for each text message. The monthly fee is $30.00 and you owe $59.50. Write
1. 2 answers
2. 176 views
A stone is thrown vertically upward at a speed of 30.30 m/s at time t=0. A second stone is thrown upward with the same speed
1. 0 answers
2. 158 views
Raise 6 to the 5th power, then find the sum of the result and d
1. 0 answers
2. 213 views
university in the region has a population of 10,000 students distributed into 12 courses and four year levels. if you would like
1. 0 answers
2. 140 views
What would be observed when a solution of silver nitrate is added to potassium chloride Solution
1. 0 answers
2. 84 views
As entertainment prefect write a speech to be delivered to the parents teachers Association about the need for raise money for
1. 0 answers
2. 268 views
each computer in a company has a unique serial number. all these serial numbers consist of five *different* odd numbers. what is
1. 1 answer
2. 207 views
A card is chosen at random from a standard pack.what is the probability that the card is not a black three?
1. 1 answer
2. 108 views
A Ferris wheel is 25 meters in diameter and boarded from a platform that is 3 meters above the ground. The six o'clock position
1. 3 answers
2. 153 views
Identify the statement below that is true about a type or stress
1. 0 answers
2. 216 views
A stone is thrown upward to just reach the top of a palm tree that is 3.0 meters tall, calculate the initial speed that is
1. 1 answer
2. 156 views
Is very high in protein
1. 1 answer
2. 110 views
Y is partly constant =2and when x=3 y =-1
1. 1 answer
2. 198 views
Calculate the area of a sector of a cycle which subtend an angle 45 degree at the centre of the cycle radius14cm
1. 1 answer
2. 154 views
A boy and a girl on aplay ground see saw .The see saw has a mass of 30kg and is pivoted at it's center.Their mother has to hold
1. 2 answers
2. 229 views
A drummer needs a new cymbal. Cymbals vary in size.How much does each cymbal increase by?
1. 2 answers
2. 214 views
If a varies bc when b=4, c=6,a=30,find the relationship between a,b and c. a, when b=4 and c=6.
1. 2 answers
2. 251 views
which best describes your understanding of theoretical and experimental probability?
1. 0 answers
2. 426 views
1. Helen's electronic book reader shows that she has already read 80% of a book. How many pages does she have left to read if
1. 5 answers
2. 387 views
Solve the following problems:1. A turtle and a snail are 360 meters apart, and they start to move towards each other at 3 p.m.
1. 1 answer
2. 955 views
We need to mix water and juice concentrate in the ratio of 7 : 2 to make orange juice. How much water do we need for 1 oz of the
1. 1 answer
2. 434 views
There are 52 animals on a farm, sheep and cows. How many sheep are there if the ratio of sheep to cows is 6 : 7?
1. 1 answer
2. 330 views
There are 91 horses in a herd. The ratio of foals to all the horses is 2 to 7. How many foals are in the herd?
1. 1 answer
2. 304 views
Two hikers set off from the same point at 12:00 pm. The first walks N20°E at a speed of 67 m/min and after three hours reaches
1. 0 answers
2. 263 views
If angle θ, in standard position, has terminal arm with point 𝑃(5, −3). Determine exact values for all 3 primary
1. 1 answer
2. 289 views
cells, each of Emf 2v and internal resistance 0.5ohms are connected in series .they are made to supply current to a combination
1. 0 answers
2. 318 views
How was the Marshall plan designed to restore European countries in the ways that discouraged the advance of communism in
1. 0 answers
2. 251 views
If a coordinate system is set up such that the positive x axis points in a direction 15° above the horizontal, what should be
1. 1 answer
2. 303 views
If 7.06 g of CuNO, is dissolved in water to make a 0.820 M solution, what is the volume of the solution in milliliters?73
1. 2 answers
2. 186 views
Am object that weighs 500N is sliding down at a ramp at a constant speed. The ramp is inclined at 25 degrees from the ground.
1. 2 answers
2. 263 views
An object is sliding down a ramp at a constant speed. The incline of the ramp is 25 degrees from the ground. What is the
1. 1 answer
2. 354 views
Can you say nickel but replace the L with an N? Thank you.
1. 0 answers
2. 229 views
A sample of gas have a volume of 500c3 of 45c what volume with the gas occupy at 0c when the pressure is constant.
1. 6 answers
2. 1,306 views
calculate the sum of squares of given input of numbers flowchart
1. 3 answers
2. 14,681 views
calculate the sum of squares of given input of numbers
1. 2 answers
2. 8,098 views
Choose any two specific functions (not already chosen by a classmate) that have inverses. Use your chosen functions to answer
1. 1 answer
2. 499 views
Choose any two specific functions (not already chosen by a classmate) that have inverses. Use your chosen functions to answer
1. 1 answer
2. 478 views
I'm searching for a way to auto-select a button(Link) without having to click on it myself. I downloaded auto refresh plus
1. 0 answers
2. 254 views
calculate the heat required to change 5 lbs of 32°f ice to 212f° steam
1. 1 answer
2. 784 views
A 9-pack of key chains costs $7.65. What is the unit price?
1. 1 answer
2. 269 views

Pages

1
2
3
4
5
6
7
8
9
10

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025