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Nicholas A.

Physics 101 Mechanics

52 minutes ago

Find the index of refraction of a medium for which the angle of incidence of a light beam is 31.5 and angle of refraction is 25.6

SA

Shazailah A.

Precalculus

an hour ago

Determine the partial fraction decomposition of the expression below. Show all work in an easy-to-read solution.That might mean working the problem out on a separate page and transferring your organized work below.Double checkyour calculations. 16x+16/x(x-2)^2(x^2+4)

AS

Ahmad S.

Chemistry 101

an hour ago

4. The ice fish lives under the polar ice cap where the water temperature is -4┬░C. This fish doesn't freeze at that temperature due to the solutes in its blood. The solute concentration of the fish's blood can be related to a sodium chloride solution that would have the same freezing point. What is the minimum concentration of sodium chloride solution that would not freeze at -4┬░C Assume idela behavior and complete dissociation of NaCl.

DT

Derrick T.

Calculus 2 / BC

2 hours ago

A boy starts from walking North at a speed of 1.5m/s and a girl starts walking West at the same point P at the same time at a speed of 2.0m/s. At what rate is the distance between the boy and the girl increasing 6s later?

DT

Derrick T.

Calculus 2 / BC

4 hours ago

Sketch the graph of the function f(x) = xe^x

AA

Adrianna A.

Intro Stats / AP Statistics

5 hours ago

The table below lists body temperatures obtained from randomly selected subjects (based on Data Set 3 ÔÇťBody TemperaturesÔÇŁ in Appendix B). Using a 0.05 significance level, test for an interaction between gender and smoking, test for an effect from gender, and test for an effect from smoking. What do you conclude?

SA

Shazailah A.

Precalculus

6 hours ago

Determine the partial fraction decomposition of the expression below. Show all work in an easy-to-read solution.That might mean working the problem out on a separate page and transferring your organized work below.Double checkyour calculations. 16x+16/x(x-2)^2(x^2+4)

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Hawkydragon H.

Geometry

9 hours ago

What is the locus of the midpoints of all chords that can be drawn from a given point on a circle with a radius of 6.

SA

Shazailah A.

Precalculus

11 hours ago

factor f(x)=2x^4-15x^3+44x^2-79x+60 completely into a product of linear factors in standard form.

SA

Shazailah A.

Precalculus

11 hours ago

how do you solve this

SA

Shazailah A.

Precalculus

11 hours ago

Determine the partial fraction decomposition of the expression below. Show all work in an easy-to-read solution.That might mean working the problem out on a separate page and transferring your organized work below.Double checkyour calculations. 16x+16/x(x-2)^2(x^2+4)

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Richard L.

Physics 101 Mechanics

12 hours ago

If the effects of atmospheric resistance are accounted for, a freely falling body has an acceleration defined by the equation $a=9.81\left[1-v^{2}\left(10^{-4}\right)\right] \mathrm{m} / \mathrm{s}^{2}$ where $v$ is in $\mathrm{m} / \mathrm{s}$ and the positive direction is downward. If the body is released from rest at a very high altitude, determine (a) the velocity when $t=5 \mathrm{s}$, and (b) the body's terminal or maximum attainable velocity $(\text { as } t \rightarrow \infty)$

TJ

Tina J.

Physics 101 Mechanics

12 hours ago

When a cold alcohol thermometer is placed in a hot liquid, the column of alcohol goes down slightly before going up. Explain why.

JH

James H.

Physics 101 Mechanics

12 hours ago

A fireman has mass $m$; he hears the fire alarm and slides down the pole with acceleration $a$ (which is less than $g$ in magnitude). (a) Write an equation giving the vertical force he must apply to the pole. (b) If his mass is $90.0 \mathrm{kg}$ and he accelerates at $5.00 \mathrm{m} / \mathrm{s}^{2},$ what is the magnitude of his applied force?

MF

Michael F.

Physics 101 Mechanics

12 hours ago

A diver bounces straight up from a diving board, avoiding the diving board on the way down, and falls feet first into a pool. She starts with a velocity of $4.00 \mathrm{m} / \mathrm{s}$ and her takeoff point is $1.80 \mathrm{m}$ above the pool. (a) What is her highest point above the board? (b) How long a time are her feet in the air? (c) What is her velocity when her feet hit the water?

RC

Randall C.

Physics 101 Mechanics

12 hours ago

While sliding a couch across a floor, Andrea and Jennifer exert forces $\overrightarrow{\mathbf{F}}_{\mathrm{A}}$ and $\overrightarrow{\mathbf{F}}_{\mathbf{J}}$ on the couch. Andrea's force is due north with a magnitude of $130.0 \mathrm{N}$ and Jennifer's force is $32^{\circ}$ east of north with a magnitude of $180.0 \mathrm{N}$. (a) Find the net force in component form. (b) Find the magnitude and direction of the net force. (c) If Andrea and Jennifer's housemates, David and Stephanie, disagree with the move and want to prevent its relocation, with what combined force $\overrightarrow{\mathbf{F}}$ DS should they push so that the couch does not move?

EH

Evan H.

Physics 101 Mechanics

12 hours ago

When you learn to drive, you discover that you need to let up slightly on the brake pedal as you come to a stop or the car will stop with a jerk. Explain this in terms of the relationship between static and kinetic friction.

AM

April M.

Algebra

12 hours ago

Use this scenario: A wireless carrier offers the following plans that a person is considering. The Family Plan: $\$ 90 dollars monthly fee, unlimited talk and text on up to 8 lines, and data charges of $\$ 40 dollars for each device for up to $2 \mathrm{GB}$ of data per device. The Mobile Share Plan: \$ 120 dollars monthly fee for up to 10 devices, unlimited talk and text for all the lines, and data charges of \$ 35 dollars for each device up to a shared total of $10 \mathrm{GB}$ of data. Use $P$ for the number of devices that need data plans as part of their cost.Find the model of the total cost of the Mobile Share Plan.Assuming they stay under their data limit, find the number of devices that would make the two plans equal in cost.

JH

Jennifer H.

Organic Chemistry

12 hours ago

General Problems Why do you suppose no one has ever been able to make cyclopentyne as a stable molecule? (FIURE CANNOT COPY)

at

Alex T.

Physics 102 Electricity and Magnetism

12 hours ago

Shows a thin rod of length $L$ with total charge $Q$ Find an expression for the electric field $\vec{E}$ at distance $x$ from the end of the rod. Give your answer in component form.

PB

Peter B.

Physics 101 Mechanics

12 hours ago

A bicyclist has the position-versus-time graph shown. What is the bicyclist's velocity at $t=10 \mathrm{s},$ at $t=25 \mathrm{s},$ and at $t=35 \mathrm{s} 7$ (GRAPH CAN'T COPY)

TY

Thomas Y.

Physics 101 Mechanics

12 hours ago

Estimate the height of a telephone pole. Give your answer in both fect and meters. Briefly describe how you arrived at this estimate.

TG

Tamara G.

Physics 102 Electricity and Magnetism

12 hours ago

Find the speed of light in a material for which the critical angle at an interface with air is $61^{\circ}.$

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Sabrina N.

Physics 102 Electricity and Magnetism

12 hours ago

Blue and red laser beams strike an air-glass interface with incidence angle $50^{\circ} .$ If the glass has refractive indices of 1.680 for the blue light and 1.621 for the red, what will be the angle between the two beams in the glass?

JW

Justin W.

Physics 102 Electricity and Magnetism

12 hours ago

An object is five focal lengths from a concave mirror. (a) How do the object and image heights compare? (b) Is the image upright or inverted?

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