Answers created by Gió
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How do you find #(A-2I)^2X=0# given #A=((3, 1, -2), (-1, 0, 5), (-1, -1, 4))#?
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How to compare these equation to #y = mx+c# ?
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Use the de Broglie's Wave Equation to find the wavelength of a 200 g ball moving at 20 m/s. Please show your work. Note: h = Plank's constant (6.62607 x 10-34 J s) ?
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When light with a wavelength of 58.4nm was applied to a rubidium atom, electrons with a velocity of 2450 #kms^-1# were emitted. What is the ionization energy of a rubidium atom? (1J= #1kgm^2s^-2#)
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Ad or subtract friction when a force is applied ?
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Completely factorise the following polynomial equations and hence solve for 𝑥.?
i) #9x^3+10x^2−17x−2=0#
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Integrate 4sin 2t dt?
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When only the cold water valve is opened, a washtub will fill in 5 minutes. When only the hot water valve is opened, the washtub will fill in 17 minutes. When the drain of the washtub is open, it will drain completely in 6 minutes?
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A football player hit a brick instead of football he got hurt but brick did not move greatly.why he did get hurt and why brick do not move?
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How do you simplify #6[-1(2^2 * 4-6 * 1)]^2# using order of operations?
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The isosceles triangle has a perimeter of 7.5m.
Which equation can be used to find the value of X if the shortest side,y, measures 2.1m?
A. 2x-2.1=7.5
B. 4.2+y=7.5
C. y-4.2=7.5
D. 2.1+2x=7.5
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An escalator in a department store is to carry people a vertical distance of 20 feet between floors. How long is the escalator if it makes an angle of #60^circ# with the ground?
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An astronaut weighs 750 N on the earth. What is the astronaut's mass?
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Please solve q 55 ?
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What does "centripetal'' mean?
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A grinding wheel has a diameter of 200mm. If it rotates at 2100 rev/min. What is the circumferential speed?
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How does temperature affect volume?
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Why is resistance less in a parallel circuit?
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A Child drops a ball from a height of 10m its velocity increases at the rate of 10 M/s^2.find ?
A)The velocity with which the ball strikes the ground.
B)Time taken by the ball to reach the ground.
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A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 45 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 352 J?
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Need to find the equation of the line ?
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How do you find the slope and y intercept of #y = 3x + 9#?
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Obtain the total revenue function from the following marginal revenue function MR=100-0.5Q where Q denotes quantity of output ?
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If the radius of the earth’s orbit around the sun is 150 million kilometers, what is the speed of the earth in its orbit in kilometers per hour ?
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If a speeding train hits the brake and it takes the train 39 seconds to go from 54.8 m/s to 12 m/s, what is the train acceleration?
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The sum of three consecutive odd integers is 183. How do you find the middle of these numbers?
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When Russia pulled out of the war in early 1918, why did Germany almost end up winning WWI?
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Can someone please answer the question below?
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Solve for x?
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How do you graph the exponential function #f(x) = 4^x + 2#?
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Help with the following?
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Differentiate between mass and weight?
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Based on the equation, what could be the age of a person who has a target heart rate of 140 beats per minute?
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A 48 inch balsa wood stick is to be cut into 2 pieces so that the longer piece is 3 times the shorter. What is the length of each piece?
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How do you integrate #int x^4(lnx)^2# by integration by parts method?
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A monochromatic beam of light passes obliquely from flint glass into air. How do the characteristics of beam of light changes?
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Why can work output be less than work Input but never be more?
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How to solve this?
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How do you solve #(15x^4 -14x^3 - 7x^2 + x + 9) / (5x-3) #?
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Can somebody explain this definition?
**The radian is the plane between two radii of a circle which cut off on the circumference an arc, equal in length to the radius**
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The altitude of an equilateral triangle is sqrt(6)units. What is the area of the triangle, in square units? Express your answer in simplest radical form.
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What equation am I supposed to use?
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Why zero can't be divided by itself ?
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It is known that objects of different mass will fall at the same speed bit of you drop a feather and coconut the coconut will fall faster.Why?
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Precalculus help?
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Three times the sum of x and 4 is 32. What is the number?
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There is a cylindrical fish tank with a radius of 10 and a height of 3. Your fish need a tank with a volume of at least 900 cubic units; will this tank work for you fish?
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What is angular displacement?
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Check below? (geometry involved)
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Check below? (geometry involved)
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Check below? (geometry involved)
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Evaluate the definite integral.?
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What is the integral?
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A boat can travel from its dock to a town downriver with a 7 mph current in 10 hours. The return trip against the same takes 15 hours. What is the speed of the boat in still water?
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Please help?
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How do you find the probability of selecting a red face card from a standard deck of 52 playing cards?
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Hard algebra question! Please help?
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If the volume of gas is reduced to half the the pressure will be??
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Is it possible to accurately approximate the speed of a passing car while standing in the protected front hall of the school?
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The difference between 721 and half of a number is 487. What is the number?
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A 20 ft ladder is leaned against the side of a building so that the base of the ladder is 7ft from the building. How high up the wall does the ladder reach?
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Plz help quick?!
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Which group on the periodic table automatically has the perfect number of valence electrons?
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Tectonic motion caused tension between plates in earth's crust. A sudden release of this energy occured. Based on this information, whic event happened?
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To what temperature will a 45.0 g piece of glass rise if it absorbs 6875 joules of heat and its specific heat capacity is 0.50 J/g°C? The initial temperature of the glass is 18.0°C.
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Circle O has a radius of 10, how do you find the length of an arc subtended by a central angle measuring 1.5 radians?
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How much power is produced if a voltage of #12 V# is applied to a circuit with a resistance of #288 Omega#?
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The Moon has a radius of #1737 km# and the gravitational acceleration at its
surface is #1.62ms^-2#. Assuming that the Moon is a sphere of uniform
density, what is its density?
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How do I find the logarithm #log_(1/4) 1/64#?
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How do you evaluate the function #p(x)=x^2-2# for #p(-2)#?
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Calculus integration help needed..? See the attachment below. Thanks :)
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What is the distance between #(3,5)# and #(6,2)#?
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A hemispherical tank is filled with water and has a diameter of 10 feet. If water weighs 62.4 pounds per cubic foot what is the total weight of the water in a full tank to the nearest pound ?
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How do you integrate #int e^x sin sqrtx dx # using integration by parts?
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How do you simplify #log (x+6)=1-log(x-5)#?
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A basketball player stands 15m away from the basket to make a 3-point shot. The basket is 3m (10 ft) above the ground. Assume the ball leaves the player's hands at a height of 2m, and with velocity vector Vo=(Vox, Voy)?
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How do you evaluate #Log_(1050) (1+x)=137#?
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How do you convert 5π/4 radians to degrees?
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How do you solve #5(10^y)=1+2(10^y)#?
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What is the gravitational potential energy of a # 9 kg# object on a shelf # 8/9 m # high?
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The wagons wheel revolves at 45 revolution per minute. the radius of the wheel is 30cm. what its linear velocity?
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A certain bleach is 5% active ingredients. In 10 gallons of this bleach, how much is active ingredients?
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Can nuclear fission be controlled in the laboratory?
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How do you solve # log (x+7)=1#?
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I have a question on my science homework: "Identify a pattern in the location of earthquakes and explain the significance of that pattern. Explain what causes earthquakes to happen in those locations." Can anyone help me?
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In a shuffleboard game, the puck slides a total of 12m on a horizontal surface before coming to rest. If the coefficient of kinetic friction between the puck and board is 0.10, what was the initial speed of the puck?
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At $1.59 a dozen, the cost od eggs is $1.06 per pound. How much does an egg weigh?
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How do you write #0.00000002# in scientific notation?
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How can we measure the wavelength of light?
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How does a system of linear equations have no solution?
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How do you differentiate #g(x)=(3x-1)/(2x+1)#?
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A cylindrical industrial storage tank has a surface area-to-volume ratio of 3. If the height of the cylindrical tank is 2 meters, what is the radius?
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If six is added nineteen times to a number, the result is 126. What is the number?
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How do you rationalize the denominator and simplify #sqrt(3/2)#?
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What is #int ln4x^2dx#?
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The sum of three consecutive odd integers is 351, how do you find the three integers?
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Given that f (x)=2 x−4 and g ( x)=3 x+5
Find: gf (3)
With noob like steps please? i need a really clear working to fully understand. THANKS! <3
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A manufacturer wants to make a box with a square base that has a surface area of 300 square inches. The box is to have an open top. What dimensions should the
manufacturer use to maximize the volume of the box ?
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So I have a circle at 22m in diameter and 69.08 circumference what is the square meter of this circle?
thanks
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If the radius of a circle is double, how is the length of the arc intercepted by a fixed central angle changed?
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