03/09/21

A light ideal spring of spring constant (force constant) 2.5 N/cm is 15 cm long when nothing is attached to it. It is now used to pull horizontally on a 12.5-kg box on a smooth horizontal floor.
You observe that the box starts from rest and moves 96 cm during the first 1.6 s of its motion with constant acceleration. How long is the spring during this motion?
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03/09/21

What is the absolute maximum value and the absolute minimum value?
The function f(x,y,z)=(xyz)1/2 has an absolute maximum value and absolute minimum value subject to the constraint x+y+z=3 with x≥​0, y≥​0, and z≥0. Use Lagrange multipliers to find these... more
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03/01/21

calculus question
Which of the following integrals represents the length of the curve  from x = 0 to x = 4? None of these I'm leaning towards C but idk
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01/26/21

How high would a 53 kg person running 7 m/s swing if they were on Mars ( g= 3.7 m/s^2)
Please help. And in the explanation I would like to see the formula used to solve and what everything stands for thanks.
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01/26/21

What is the x-component of a vector A that has a magnitude of 12 units and direction of 30o?
What is the x-component of a vector A that has a magnitude of 12 units and direction of 30o?A.Ax =6.0 units B.Ax =-6.0 units C.Ax = 10.39 units D.Ax = 144 units
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01/26/21

Please show all your work and show step by step please
Earth = 9.8 meters per second squared [m/s^2] Earth's moon = 1.6 meters per second squared [m/s^2] Mars = 3.7 meters per second squared [m/s^2] A spaceship has a mass of 3,250,000 metric tons... more
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01/23/21

Evaluate the following limit if it exists or show that it does not exist.
Evaluate the following limit if it exists or show that it does not exist.lim (t2 − 4) / (t3 − 8) t→2
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01/23/21

Intermediate Value Theorem
1. Use the Intermediate Value Theorem to show that there exists at least one solution in the set of real numbers for the following equation. (Note that you are NOT provided with any interval). x5... more
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01/23/21

SOLID MENSURATION QUESTION I FAILED TO ANSWER BUT DIDN'T KNOW THE SOLUTION
For a given box, the height measures 3 m. If the length of the rectangular base is 2 m greater than the width of the base and the lateral area L is 96 m2, find the dimensions (in meters) of the box.
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01/23/21

Can someone explain me how to get this answer?
A dynamite blast at a quarry launches a chunk of rock straight upward, and 1.9 s later it is rising at a speed of 20 m/s. Assuming air resistance has no effect on the rock, calculate its speed at... more
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01/22/21

Write the equation of the parabola in the form y=a(x-h)^2 + k that has a vertex of (3,12) and contains the point (7,15)
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01/22/21

The rocket problem
The height (h) in feet of a model rocket is given by the function h(t) = -16t^2 + 230t + 5 where t (time) is measured in seconds. Calculate the average rate of change in the height of the rocket... more
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01/22/21

The end points of the diameter of a circle are (1, -2) and (5, 16). Write the equation of the circle in standard form.

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01/22/21

Which of the following functions has a vertex of (-7, 3)?
f(x)=(x-3)^2+7 f(x)=(x-7)^2-3 f(x)=-(x+3)^2+7 f(x)=(x+7)^2+3
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01/20/21

write y= csc x in terms of y= sec x
My answer is Y= sec (π/2-x) but I think is wrong because the options are y= sec (x-π/2) , y= sec (x+3π/2) , y= -sec (x+π/2) , y= -sec (x-3π/2) , or "all of these"so which one should i pick? Is y=... more
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01/20/21

Find the derivative of r(t).
r(t)= < 1+tan(t), -4sin(t), 1/(4-t) >What is the derivative of r(t)?
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01/18/21

Find the general solution (x+2y-1)dx-(2x+y-5)dy=0
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01/18/21

Find the general solution of (3x-y+1)dx-(9x-3y-3)dy=0
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01/17/21

coputer engineering
Find the volume of the solid generated by revolving the region bounded by y = x 2 , y = 0 and x = 2 about the y-axis.
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01/17/21

a merry-go-round has a I = 319 kg*m^2 on its own, and is now spinning at 1.82 rad/s with a 34.7 kg kid standing 0.500 m from the axis.

the kid then walks outward until he reaches 1.25 m from the axis. what is the new angular velocity of the system?[?] rad/s
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01/17/21

[x]+3>8; D=[Reals]
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01/17/21

the tub of a washing machine is initially at rest. when the spin cycle begins, it begins to rotate. In the first 2.80 s, it makes 3 complete revolutions. what is its final angular velocity?
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01/17/21

To turn a nut, a wrench must create 2.25 N*m of torque. if the person exerts a 48.3 N force perpendicular to the wrench, how dar from the nut should the force be applied?
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01/13/21

need help with this
A blue ball is thrown upward with a velocity of 9 m/s upward from the top of a high cliff. At the same time, a red ball is dropped from the same spot. The red ball is observed to hit the ground... more
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01/13/21

differential equation
Solve the differential equation (x2 + 3y2)dx 2xydy = 0 with initial condition y(2) = 6.
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