03/02/22

Find absolute maximum and minimum values
Find absolute maximum and minimum values of f(x, y) = x^2 + 14xy + y^2, defined on the disc D = {(x, y)|x^2 + y^2 ≤ 7}.maximum value : ?minimum value : ?
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03/01/22

AP Physics C E and M
An electron moves 0.10 m along the direction of an electric field of a magnitude of 3.0 N/C. What is the change in electric potential energy between the electron’s initial and final points?
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03/01/22

Given that r(t) = 3sin(t)i + 3cos(t)j + 4(t)k. Find the length of the curve...
Given that r(t) = 3sin(t)i + 3cos(t)j + 4(t)k. Find the length of the curve for 0 < t < pi/2. Note: < is less than or equal to symbol. Reparametrize the curve with respect the arc length... more
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03/01/22

Find the resulting electric field at 7 cm and 10 cm from the center of a sphere having two shells.
Two thin, spherical, concentric metal shells have a radius of 6 cm and 8 cm. The inner shell carries a charge of 7 nC and the outer shell carries a charge of 4 nC. Find the resulting electric field... more
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03/01/22

Reference BC CALC topic circuits parametric and vectors (make sure to show all work). Answer choices listed are
Question: Reference BC CALC topic circuits parametric and vectors (make sure to show all work). Answer choices listed are ( 0.331, -1.015,6.370,0.647, (300,183.6), 2.121, (5.113,-1.797),... more
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03/01/22

Physics on light

You observe light being refracted though a strange substance. Find the speed of the light in this substance if it has a wavelength of 4.0*10^-7 and a frequency of 3*10^14. Make sure your answer... more
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02/28/22

AP Physics C E and M
Three point charges are located along the x-axis: q1 = +5.0 μC is at 20 cm, q2 = +4.0 μC is at 0 cm, and q3 = +10.0 μC is at –30 cm. What is the net electrostatic force on q2?0.50 N to the left500... more
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02/28/22

What is Kc for this equilibrium?
Solid Ca₃(PO₄)₂ is placed into 10.0 L of water. When equilibrium is established, the concentration of Ca²⁺ is 2.3 × 10⁻⁴ M. What is Kc for this equilibrium? Note Kc is sometimes called K.... more
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02/27/22

A 24 kg block is suspended below a 30 kg block by a 10 kg chain. The 30 kg block is being pulled upward by a force of 320 N.
What is the acceleration of the system? What is the force of the 30 kg block on the top link of the chain.
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02/27/22

A 100 kg box of dimensions 50x50x50 cm is located on the center of a truck’s 2 m long flatbed. The coefficients of friction between the box and the bed of the truck: static=0.4 and kinetic=0.2.

A 100 kg box of dimensions 50cm x 50 cm x 50 cm is located on the center of a truck’s 2 m long flatbed. The coefficients of friction between the box and the bed of the truck are static = 0.4 and... more
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02/26/22

A board 90cm long just fits inside the bottom of a box 80cm long and 60cm wide. How wide is the board?
PLEASE NEED HELP TODAY!
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02/26/22

I need help with this
A trough is 12 feet long and 3 feet across the top (see figure). Its ends are isosceles triangles with altitudes of 3 feet. (a) If water is being pumped into the trough at 2 cubic feet per minute,... more
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02/26/22

Box Sliding down incline with friction
A 2.0 Kg box is sliding down a 20 degree, 5-m long ramp with coefficient of kinetic friction 0.2. if it started at 1.0 m/s, how fast will it be at the bottom of the ramp?
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02/25/22

What is the pH of a 0.500 M Solution of KOH?
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02/25/22

physics question !!!
a convex lens has a focal length of 10 cm. an object 2 cm tall is placed in front of the lens.(a) at what distance will the image appear inverted and 2 cm tall?(b) at what object distance will the... more
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02/24/22

Einstein's general theory of relativity question
I have a question about Einstein's General Theory of Relativity. I know little to nothing about quantum physics given I'm only in 7'th grade. But I was watching a lecture on this theory, and I had... more
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02/24/22

AP Physics C E and M
A point charge of +10 μC is at (+3 m, 0 m) on the x-axis and a point charge of +10 μC is at (-3 m, 0 m).Determine the work required to assemble this charge distribution
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02/23/22

Find the length s of the arc of a circle of radius 55 inches subtended by the central angle 78*
Radius is 55 inches, subtended by 78 degrees
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02/23/22

How do i solve this
A 500-gallon backyard swimming pool that contains 300 gallons of water is being drained through a hose. During the first 3 hours, the pool drains at a rate of 40 gallons per hour. During the next 9... more
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02/22/22

what is the molarity of a solution made by dissolving 188g of MgCl2 in 500g of water?
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02/22/22

Applications of Vectors
Two vessels are pulling a broken-down ship toward a boathouse with forces of 750 lb and 630 lb. The angle between the forces is 34.5° The magnitude of the equilibrant force would be _____ pounds.... more
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02/22/22

Find the integral

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02/22/22

The formula for the derivative of the inverse function, 𝑔(𝑥) g ( x ) , to a function 𝑓(𝑥) f ( x ) , is 𝑔′(𝑥)=1𝑓′(𝑔(𝑥)). g ′ ( x ) = 1 f ′ ( g ( x ) ).
The formula for the derivative of the inverse function g(x) to a function f(x) is : g’(x) = 1 / f’(g(x))Use this formula to calculate g’(x) where g(x) is the inverse of f(x): f(x) = 1 / x^2g’(x) = ?
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02/21/22

1. A particle's motion can be described by the equation s(t) = 3t3 - 6t2 + 2t.

a. When is the particle's velocity in the forward direction? b. When does the particle go from slowing down to speeding up?
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02/21/22

Integrating exponential function beside e^x
I am doing a math assignement where I find the area of a country using functions. I used an exponential equation that was not a base of e. I was able to integrate it using a calculator, but I... more
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