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Iris Kalfa

Iris K.

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Viewed Questions

When a rocket is 2 kilometers high, it is moving vertically upward at a speed of 300 kilometers per hour. At that instant, how fast is the angle of elevation of the rocket increasing, as seen by an observer on the ground 5 kilometers from the launching pad?

Calculus with Concepts in Calculus

Derivatives

Related Rates

A Norman window is a window in the shape of a rectangle with a semicircle attached at the top (Figure 4.53). Assuming that the perimeter of the window is 12 feet, find the dimensions that allow the maximum amount of light to enter.

Calculus with Concepts in Calculus

Applications Of The Derivative

Extreme Values On An Arbitrary Interval

Find an equation of the ellipse in standard position that passes through $(0,2)$ and has slope $1 / \sqrt{2}$ at the point $(-2, y)$ with $y>0$.

Calculus with Concepts in Calculus

Curves In The Plane

Conic Sections

To make a balloon rise faster, the balloonist drops a sandbag from the bottom of the balloon. a. If the sandbag is ejected at an elevation of 528 feet and takes 6 seconds to hit the ground, what was the speed of the balloon at the time of ejection? b. If the balloon rises at 4 feet per second and is 992 feet above the ground when the sandbag is ejected, how long will it take the sandbag to hit the ground?

Calculus with Concepts in Calculus

The Integral

The Fundamental Theorem Of Calculus

Questions asked

ANSWERED

Anand Jangid verified

Numerade educator

6. Which molecule would you expect to have a lower boiling point and why: a. PH3 vs. NH3 b. Br2 vs. Cl2 c. CH4 vs. SiH4 d. HF vs. HCl

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ANSWERED

Celine Ibrahim verified

Numerade educator

3. When the flowering portion of marijuana (often called 'bud') is heated, the component THC-A undergoes decarboxylation to yield THC. With regard to IMFs, what is the advantage of burning bud for connoisseurs of marijuana? THC-A THC O=C=O

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ANSWERED

Ivan Kochetkov verified

Numerade educator

Rank water, hydronium, and ammonia from smallest to larger H-X-H bond angle and explain your answer.

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ANSWERED

Scott Stetson verified

Numerade educator

Find extreme values if any of ( g(x)=4 x+sin (4 x) ) in the interval ( [0, 2pi) ). Hint: there are 4 critical values of ( g ) in the interval.

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ANSWERED

Vincenzo Zaccaro verified

Numerade educator

6. A rectangle is to be drawn so its base is on the ( x ) axis, its left side is on the ( y ) axis, and the upper right vertex is on the parabola given by ( y=12-x^{2} ). (a) (10) Draw a sketch of this situation, and find a formula for the area ( A ) as a function of the length of the base. (Don't forget to include the domain of ( A ) !) (b) (15) Then determine the area ( A ) of the rectangle that is as large as possible, identify the upper right vertex of that rectangle, and justify your answer as the maximum possible area.

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ANSWERED

Supratim Pal verified

Numerade educator

(b) (10) The height ( h(t) ) of a falling object after ( t ) seconds is given by ( h(t)=-4.9 t^{2}+49 ) meters above the ground. Determine the time ( t_{0} ) it takes for the object to hit the ground, and the velocity ( v_{0} ) of the object at that moment.

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ANSWERED

Zhumagali Shomanov verified

Numerade educator

5. (10 points.) A particle moves on the curve defined by the equation ( x e^{y}+y e^{x}=5 sin y ). When the particle is at ( (0,0) ) its horizontal velocity ( left.frac{d x}{d t} ight|_{(x, y)=(0,0)} ) is ( 2 mathrm{~mm} / mathrm{sec} ). What is the vertical velocity ( left.frac{d y}{d t} ight|_{(x, y)=(0,0)} ) of the particle at that time?

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ANSWERED

Ma. Theresa Alin verified

Numerade educator

(ii) ( h(t)=frac{left(t^{2}-1 ight)^{2 / 3}}{t-sec ^{2}(t)} ).

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ANSWERED

Ma. Theresa Alin verified

Numerade educator

(i) ( F(x)=int_{sqrt{x^{2}-1}}^{ an ^{2}(x)} sin (sqrt{t+1}) d t )

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INSTANT ANSWER

2. (15 points.) Carefully justify why the equations \( e^{x}=4 x \) has a solution \( c \) in the interval \( [n, n+1] \) where \( n \) is an integer you must specify. With \( c_{1}=0 \), find the approximation \( c_{2} \) to the solution of the equation using the Newton-Raphson method.

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