09/13/22

True or False---Parametrization
True or False: The parametric curve x=(3t+4)^2 , y = 5(3t+4)^2 -9 , for 0 <= t <= 3 is a line segment. True or False: A parametrization of the graph of y=ln(x) for x>0 is given by x =... more
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09/13/22

3D Coordinates and Angles
A million years ago, an alien species built a vertical tower on a horizontal plane. When they returned they discovered that the ground had tilted so that measurements of 3 points on the ground gave... more
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09/11/22

Equation of Planes
Find an equation of a plane through the point (5,4,1) which is orthogonal (perpendicular) to the line:x=t-1 , y=3-4t, z= 1-4tCan you explain how you were able to solve this? Thanks!
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09/10/22

Applied Probability & Information Theory - Joint Entropies
A child’s toy contains two windows in each of which a clown’s face appears when a button is pressed. The clown may be either smiling or crying. The design is such that the probability of each... more
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09/09/22

What is the equivalent form of square root of -8
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09/08/22

Calculus Word Problem
A manufacturer produces bolts of a fabric with a fixed width. A quantity q of this fabric (measured in yards) that is sold is a function of the selling price p (in dollars per yard), so we can... more
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09/07/22

Use the method of cylindrical shells to find the volume generated by rotating the region bounded by the given curves about the y-axis. y = 10x − x2, y = x
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09/07/22

Need help with coding
We need to create a java program with the name “TheDotProduct2D.java”. This program will transpose a two-dimensional vector (array) using nested loops. Once transpose has occurred, the original... more
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09/06/22

Help me solve this!!!
Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s2 lasting for any length of time will not cause... more
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09/04/22

Let Q = {(x,y) ∣ x ∈ Z, y ∈ R}. Q is closed under addition. Give a vector v ∈ Q and a scalar c for which cv ∉ Q
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09/03/22

High school physics momentum
If a 22 g bullet, shot straight up into the air, reaches an altitude of 4.59 km, what is the recoil velocity of the 3 kg rifle.answer: -2.2 m/s
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09/03/22

Sequences for real numbers
Consider the sequence {r^n / n} for r a real number. a. Explain why the sequence is not monotonic for r < 0. b. Show that the sequence is increasing for r ≥ e. c. Show that the sequence is... more
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09/03/22

Increasing, decreasing or monotonic sequences
Is the sequence increasing, decreasing, or monotonic? a. {(1⋅3⋅5...(2n-1)) / n!}b. {((-1)^n n^3) / (2n^3 + 1n^2 +1)}c. {n^(e) e^(-n)}(How do I show my work for this question)
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08/28/22

In which case was more work done on the box by the 4.0 N force?
A box is supported by a 4.0 N vertical force and carried 2.1 m horizontally across a room at constant speed. Then, the same box is pushed 2.1 m horizontally across a smooth table (smooth enough to... more
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08/28/22

i need help with physics
Two point charges q and 4q are at x=0 and x=L, respectively, and free to move. A third charge is placed so that the entire three-charge system is in static equilibrium.What is the x-coordinate of... more
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08/24/22

Help with Unix Lab - AWK
Write a script called labscript3.awk that will print out all orders shipped in 2014. Print out region, item type and total profit. At the end, it should print out the average total profit (for... more
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08/23/22

Evaluate the Integral, ∫tanh^-1(x)dx A.) by using the identity tan^-1 x = 1/2 ln((1+x/)(1-x)). B.) evaluate using parts. C.) Show that both answers are equal up to a constant.

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07/31/22

Your program must define and call the following function. The function should return true if the input year is a leap year and false otherwise. (Java)
A common year in the modern Gregorian Calendar consists of 365 days. In reality, Earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes... more
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07/12/22

Interesting tricky physics problem
A spacecraft (with velocity v) moves towards a cloud of cosmic dust of density p2. The dust that hit the spacecraft, sticks to it. Then the engine is turned on, so that the velocity of the... more
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07/10/22

A train has one locomotive and 25 cars. Each of the cars has a mass of 55,000 kg.

The train needs to go up a hill that is angled 1.1 degrees up from the horizontal. What does the mass of the locomotive have to be for it to climb the hill at constant speed? You can assume all the... more
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07/09/22

Physics problem: rope sliding off the fence
A rope of length l<h is thrown over a fence of height h. Initially, the rope is in equilibrium position. At some moment, the equilibrium is lost and the rope slides off the fence. Find how much... more
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07/09/22

Two balls undergoing an elastic collision
Two balls of masses m1=0.3 kg and m2=0.2 kg are hanging on the same kind of thin threads that are attached to the same point. Keeping the thread tense, the first ball is raised to the height of H=7... more
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07/09/22

Interesting physics problem about a rope attached to an inclined plane
After many attempts, I don't really understand how to solve this physics problem:A rope of lenght l=20 cm is attached to an inclined plane (plane's angle of displacement is α = 30°). The other end... more
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07/08/22

Hard physics problem about object attached to a thread
A thread of lenght l<AB is tied to the top (point A) of the stem AB. The other end of the thread is attached to an object. The thread is stretched out horizontally and then the object is... more
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07/07/22

quadratic equations
Why are there usually two solutions in quadratic equations? 5. can you please Give me an example from real life where quadratics are utilized. Why did you pick this example
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