02/24/25

2. Use sympy to compute the exact volumes of the following solids S:
(a) S rests on the xy-plane, and its base is the region bounded between f(x) = sin(π/4 · x)and g(x) = cos(π/2 ·x)−1 on 0 ≤ x ≤ 4. Cross-sections of S perpendicular to the x-axisare isosceles... more
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11/07/24

Arc Length and Area of Sector│Please Help!
If you rotate the red gear 130 degrees, how many degrees will the blue gear rotate? If you rotate the green gear 38 degrees, how many degrees will the red gear rotate? Round your answer to the... more
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10/20/24

The loudness of a sound can be measured in terms of watts of sonic energy P. Usually, however, it is measured with decibels.
The loudness of a sound can be measured in terms of watts of sonic energy P. Usually, however, it is measured with decibels. The relationship between the decibel level L and the watts of sonic... more
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10/20/24

Problem Solving for solenoid with given inductance and resistance
A solenoid has an inductance of 100mH and resistance R of 5.5ΩHow can I find the:a) The time constant for this circuitb) How long would it take for the current to go from 0 to 63% of its final... more
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08/09/21

Give three points that are equivalent to the polar point ( 4 , 235 ∘ ) . Write the three points in polar form, with the angles in degrees.
Give three points that are equivalent to the polar point (4,235∘). Write the three points in polar form, with the angles in degrees.
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08/09/21

Vectors and the Geometry of Space
Find the distance of the point (4,6,−4) from the line r(t)=⟨−1+3t,1+3t,5−3t⟩.Answer:
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08/07/21

probability density function, find SD(X), find cumulative distribution function (CDF)
Let X be the amount of time (years) before a new battery stops working. X has the probability density functionf(t) = { C e^(-0.4t) , t ≥ 0 0 , otherwise,where C is a... more
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08/07/21

Differential equation
Find all solutions of the equationy' + 2y = b(x) , (−∞ < x < +∞)where 1 − |x|, if |x| ≤ 1 b(x) = 0, if |x| > 1
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08/05/21

find the force in newtons
The Deligne Dam on the Cayley River is built so that the wall facing the water is shaped like the region above the curve y = 0.6x^2 and below the line y = 100. (Here, distances are measured in... more
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07/27/21

Half-life of silicon if 50 grams are present how many in 500 years
the half-life of silicon-32 is 710 years. if 50 grams are present now how much will be present in 500 years?
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07/27/21

finding grams in chemistry

How many grams of water are in a puddle that contains 9.1 x1025 molecules of water (H2O)?
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07/27/21

Atoms in chemistry

A coin contains 0.0800 moles of silver. How many silver atoms are in the coin?
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07/27/21

To end up due north, the pilot will need to fly the plane how many degrees west of North
an airplane needs to head due north but there is a wind blowing from the southwest at 80 km/hR the plane flies at an air speed of 650 km / h r
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07/27/21

Physics question

q1 = -4.60 x 10-5 C, q2 +3.10 x 10-6 C, and 93 = -8.30 x 10-5 C. Find the X-component of the net force on q2. Include the correct + or - sign to indicate direction.Q1 is connected to Q2 (left to... more
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07/27/21

A 14.570 g sample of CaCl2 was added to 12.081 g of K2CO3 and mixed in water. A 3.566 g yield of CaCO3 was obtained.
A  14.570 g sample of  was added to 12.081 of  and mixed in water. A 3.566 g yield of  was obtained. Calculate the percent yield of 
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07/27/21

How do I solve y''+5y'+6y=e^(-t) 𝛿(t-4); y(0) =2, y'(0) =-5 given this symbolic initial value problem?
How do I solve y''+5y'+6y=e^(-t) 𝛿(t-4); y(0) =2, y'(0) =-5 given this symbolic initial value problem? I am trying to solve for y(t).
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07/27/21

Suppose 𝑓(𝑥) is a function whose graph is a TANGENT curve with the following features 1. Vertical Stretching = 15/16 2. Period = 𝜋 3. Phase shift = 0. 4. Midline 𝑦=0
Using the trig function tan(x) , find an equation for the graph of f(x)
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07/25/21

Physics question
In the diagram, q1 = -4.60 x 10^-6 C, 92 +3.75 x 10^-5 C, and q3 = -5.30 x 10^-6 C. Find the Y-component of the net force on q2.The diagram is a right triangle. Q1 is connected to Q3 (up-down) with... more
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04/27/21

Average Value Theorem
If the average value of the function f on the interval 1≤x≤4 is 8, what is the value of ∫41 (3f(x)+2x)dx ?Note: that is, the integral from 1 to 4 of 3f(x)+2x)dx
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04/27/21

A car rental agency has 18 vehicles available, of which 6 are sedans. What is the probability that a randomly selected vehicle will be a sedan?
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04/27/21

f is a function that is differentiable for all reals. The value of f '(x) is given for several values of x in the table below.
f is a function that is differentiable for all reals. The value of f '(x) is given for several values of x in the table below.x -8 -3 0 3 ... more
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04/27/21

What is the particular solution to the differential equation dy/dx = 6(1+3y)/(1+2x)^2 with the initial condition y(−1)= 0?
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04/27/21

Amount of wire needed
Another friend of the Lee family, the Bloch family, has a cottage that is situated 8km down the road from them (it’s a straight road). The road runs parallel to the main highway that is 16km away.... more
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04/27/21

The concentration C(t) of a certain drug in the bloodstream," t" hours after injection is C(t)=sin⁡t+cos⁡t-1 on the interval [0, π/2]. When does the drug concentration reach its maximum value?"
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04/27/21

Newton's laws and forces
A 90 kg rocket man with a 50 kg jet pack is burning up his fuse up there alone. If the jet pack's thruster puts out 2 kilo-Newtons of force and is pointed 40 degrees below horizontal, what is the... more
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