03/20/21

Why does (x+ 1)/(1 +x^2) for x ∈ [0,4] have both an absolute min and max on [0,2] and determine the absolute extrema on [0,2].

Consider the function f (x) := (x+ 1)/(1 +x^2) for x ∈ [0,4].(a)Why does f possess both an absolute maximum and an absolute minimum on the interval[0,2]?(b)Please determine the absolute extrema of... more
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03/20/21

SOLVE THE FOLLOWING DE:
y''+7y'+10y=4xe^{-3x} HERE y(0)=0, y'(0)=-1
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03/19/21

Precalc Question

f 𝜃 = 3/2 is the angle larger or smaller than a right angle?
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03/19/21

suppose the function f is defined so that f(0)=1 and its derivative is given by f'(x)=e^sinx. which of the following are true? options in description
1. f''(0)=1 2. the line y=x+1 is tangent to the graph of f at x=0 3. if h(x)=f(x^3 -1), then h is increasing for all real numbers x.
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03/19/21

What is the force of gravity in m/s for the the planet Jupiter with a mass of 1.898 x 10^27kg with a separation distance of 5.88 x 10^12m)
Please explain how you found the answer and show work
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03/19/21

What is the force of gravity in Newtons for the a dog with a mass of 20kg on Earth's (5.98x10^24kg) surface (6.37x10^6m from the center of Earth)?
Please explain how you found the answer and show work
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03/18/21

physics question (answer is given but idk how to get to these answers)
A sled with two riders have a combined mass of 150.0 kg. They slide down a 12.0 m high hill and then across a frozen lake that is 60.0 m in diameter. The frictional force is a constant 200.0 N for... more
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03/15/21

Calculate the horizontal component of the net force, in newtons, on the charge which lies at the lower left corner of the rectangle.

Four point charges of equal magnitude Q = 55 nC are placed on the corners of a rectangle of sides D1 = 21 cm and D2 = 11 cm. The charges on the left side of the rectangle are positive while the... more
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03/15/21

Solve Application with system of Equations

Chance has some quarters and dimes. He has 19 coins worth a total of $2.65. How many of each type of coin does he have?
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03/14/21

physics question on faradays and lenz laws

A 10-turn square coil of area 0.036 m2 and a 20-turn circular coil are both placed perpendicular to the same changing magnetic field. The voltage induced in each of the coils is the same. What... more
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03/14/21

What is the terminal speed?
A rain drop of mass 0.034 gram with a radius of 0.2 cm attains a terminal speed when the drag force is equal to its weight (W=mg). Give air density 1.21 kg/m^3, effective surface area of the drop... more
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03/14/21

Let f(t) be the weight (in grams) of a solid sitting in a beaker of water. Suppose that the solid dissolves in such a way that the rate of change
Let f(t) be the weight (in grams) of a solid sitting in a beaker of water. Suppose that the solid dissolves in such a way that the rate of change (in grams/minute) of the weight of the solid at any... more
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03/12/21

Find the values of 𝑥 where the tangent line to the graph of 𝑓(𝑥) = √𝑥 is parallel to the line 𝑦 = 1/4 𝑥 + 5
Having trouble with this question.
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03/12/21

ln(m+3)-ln(2m-1)=ln4
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03/12/21

Sum and difference with 2 terms given
Find the exact value of sin (u+v) given that sin u = 8/17 and cos v = -60/61. Both u and v are in quadrant 2. no clue how to start this need some help
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03/12/21

Give a double integral to find the volume of the solid bounded by the equation graphs
Give a double integral to find the volume of the solid bounded by the equation graphs z=0, z=x2,x=0, x=2, y=0, y=4
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03/12/21

starting from rest
Starting from rest, a child zooms down a frictionless slide from an initial height of 5.00 m. What is her speed at the bottom of the slide? Assume she has a mass of 20.0 kg.
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03/12/21

How to find the integral of sqrt(x)/(sqrt(x+1)) using u=sqrt(x)?
Must solve using u substitution where u=sqrt(x).
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03/12/21

While on vacation, you visit a cave. you shout at a far wall and the sound returns after 6 seconds. The speed of sound that day was 345m/s.

How far was it to the far side of the cave? (The frequency of the sound you made had a frequency of 600 Hz. )What was its wavelength?What was its period?
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03/11/21

2. Find the area of the region bounded by the curve y=x^3-2x^2-5x+6, the x-axis and the lines x=-1 and x=2
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03/11/21

A 60.0-kg boy rides in an elevator that accelerates upward at 1.80 m/s2. What is the magnitude of the net force exerted on the boy?
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03/10/21

How many revolutions
A fan rotating with an initial angular velocity of 1500rpm is switched off. In 2.00s, the angular velocity decreases to 450rpm. Assuming the angular acceleration is constant, how many revolutions... more
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03/10/21

Mass Velocity and direction of First Block
A 2.50-kg cart slides across a frictionless horizontal surface with an initial speed of 3.00 m/s. After an elastic head-on collision with an initially stationary cart, that second cart of unknown... more
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03/10/21

PLEASE HELP????????????????????????????????????
Two identical positive charges exert a repulsive force of 6.4 * 108 when separated by a distance of 2.8 * 10-2 m. Calculate the charge of each. Round to the thousandths place.  
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03/09/21

solve (x^3*y^3+x^2*y^2+xy+1)ydx + (x^3*y^3-x^2*y^2-xy+1)xdy=0
solve (x^3*y^3+x^2*y^2+xy+1)ydx + (x^3*y^3-x^2*y^2-xy+1)xdy=0
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