12/12/22

What is the momentum
Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 120,000 kg and a velocity of 0.300 m/s, and... more
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11/27/22

A scale contains a spring with a spring constant of 275 N/m. Placing a mass on the scale causes the spring to be compressed by 3.25 cm. Calculate the elastic potential energy stored in the spring
I am just confused. I need step by step.
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11/27/22

Calculus. Show work please

Consider the curve x2y+y2x=6 Find dy/dx in terms of x and y. Write the equation for the tangent line where x = 2 and y = 1. Find the coordinates of the point (x, y) where the curve has a horizontal... more
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11/25/22

I need help with this math problem!
A boat travels upstream and reaches town A in 2 hours. The return trip is 1 hour 40 min. What is the speed of the boat in still water?
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11/23/22

By how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?
A machinist wishes to insert an iron rod with a diameter of 4 mm into a hole with a diameter of 3.994 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
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11/22/22

Math Question Max-Min problem
Determine how many apple trees should be planted per hectare to yield the greatest number of apples. If no more than 20 trees are planted per hectare, apple trees grown in Toronto produce 600... more
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11/21/22

Series Convergence
Find all the values of x such that the given series would converge.∑n=1 to ∞ [2^n(x−4)^n(n+1)]/(n+10)Give your answer in interval notation.
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11/21/22

Density of a rectangular block and it's maximum possible error
The dimensions of a rectangular glass block are length L=46.23±0.01cm, breath w=3.14±0.02cm and the thickness t=2.015±0.005.If the mass of the block is 40.200±0.006g calculate the density and it's... more
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11/15/22

molly 3-section solar panel total width 26in. to get proper inclination, needs right triangular support frame that one leg twice as long as other. nearest tenth of in. what dimensions should it have
need help solving this problem from a worksheet. the answer has to be in a complete sentence with the correct units
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11/08/22

Force Question 1
How much force is required to stop a 1000 kg car in 5.0 seconds if it is traveling at 30m/s?
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11/08/22

Physics forces 1
A 50kg suitcase is being pulled across a level floor by a force of 250 N at an angle of 65 above the horizontal. The coefficient of kinetic friction between the suitcase and the floor is .05. Can... more
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10/24/22

help in physics
As a gasoline engine is running, an amount of gasoline containing 12,000 J of chemical potential energy is burned in 1 s. During that second, the engine does 4,000 J of work.(a)What is the engine's... more
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10/22/22

Please help with my homework
write the solution as a compound inequality( + 8) (x +1) > 0
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10/21/22

Find length and width
The length of a rectangle is 3 m more than double the width, and the area of the rectangle is 54 m2 Find the dimensions of the rectangle.
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10/21/22

Find the domain and asymptotes of the function

Letf(x)=20x^3−88x^2−13x+18/5x^3+38x^2+59x−30The domain of the function f(x) is:  Use interval notation to enter your answer. The root(s) of f(x) is/are:  Enter the root(s) as a comma-separated... more
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10/21/22

How far from the starting point is the hiker after these four legs of the hike? All angles are measured in a counter-clockwise direction from the positive x-axis. Answer in units of km
A hiker makes four straight-line walks A 12 km at 86 ◦ B 23 km at 222 ◦ C 17 km at 172 ◦ D 31 km at 122 ◦ in random directions and lengths starting at position (41 km, 41 km),
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10/19/22

Find the maximum and minimum values of the function y = x − 1/ x^2 + 80x on the interval [1,81]
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10/19/22

What is the rate of change of its total surface area when its radius and height are 20 in and 50 in respectivley?

What is the rate of change of its total surface area when its radius and height are 20 in and 50 in respectivley?
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10/17/22

Write the equation of the parabola in vertex form. vertex (2,4) point (1,1)
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10/17/22

linear system and solve
The sum of two integers is 62. The larger is 17 more than four times the smaller. Find the two integers.
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10/16/22

Determine whether the sequence converges or diverges. It it converges, find the limit.
Determine whether the sequence converges or diverges. It it converges, find the limit.an= 4n^(2) -3n / 2n^(2) +1
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10/12/22

Formulate and solve systems of three linear equations in three variables using elimination

A farmer rotates wheat, corn, soybean crops on her farm. The farmer produces 293 bushels of produce and sells them for a total of $1557. Wheat costs $8 a bushel. Corn costs $4 a bushel. Soybeans... more
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10/11/22

Having trouble these problems
The height of a rocekt that is launched is modeled by the function h(t)=−4.9t2+1200t+320h(t)=-4.9t2+1200t+320 where the height is meters above sea level, tt seconds after launch.a) (2 pts) What is... more
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10/11/22

Find all the critical points and local maximums and minimums of the function. f(x)= x^3 -6x^2 + 5
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10/11/22

Need help with this question.
Two objects mass m1 = 5.00 kg and mass m2= 3.00 kg are connected by a light string that passes over a frictionless pulley, as in Figure.  Express your answer using 3 significant figures.(a) What is... more
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