11/30/21

A disk of moment of inertia 700. kg m2 is rotating in a horizontal plane

A disk of moment of inertia 700. kg m2 is rotating in a horizontal plane about an axis through its center with an angular speed of 11.0 rad/s. If a second, identical, but not rotating disk, is... more
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11/22/21

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=8−x2. What are the dimensions of such a rectangle with the greatest possible area?
I am looking for the width and the height.
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11/22/21

A cylinder is inscribed in a right circular cone of height 4.5 and radius (at the base) equal to 5.5. What are the dimensions of such a cylinder which has maximum volume?
I am looking for the radius and height.
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10/27/21

A thermometer is taken from a room where the temperature is 25oC to the outdoors, where the temperature is 3oC. After one minute the thermometer reads 14oC.
A thermometer is taken from a room where the temperature is 25oC to the outdoors, where the temperature is 3oC. After one minute the thermometer reads 14oC. (a) What will the reading on the... more
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10/18/21

How long will it take to drain the pool once it is filled and only the drain valve is opened?
Emmanuel was told that his pool will fill through an inlet valve in 12 hours. He knew something is wrong when the pool took 20 hours to fill. He found he had left the drain valve open. How long... more
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10/18/21

A vector representing 150 N is oriented at 43◦ with the horizontal. What is the magnitude of its horizontal component? Answer in units of N.
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10/18/21

A roller coaster travels 29.1 m at an angle of 36.0◦ above the horizontal. How far does it move horizontally? Answer in units of m.
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10/17/21

A Projectile. When a projectile is launched upward from the top of a building of height H, its vertical position (in feet) at time t (in seconds) is given by
 A Projectile. When a projectile is launched upward from the top of a building of height H, its vertical position (in feet) at time t (in seconds) is given by. Show Work s = -16t^2 + 96t +Ha) Find... more
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10/14/21

A balanced three-phase system, with line voltage of 220V/60Hz, feeds a star-connected balanced three-phase load with apparent power of 3kVA and leading 0.8 power factor.
Considering the information presented, analyze the following statements.I. The current per phase in the load is 5A.II. The active power of the load is 1800W.III. The reactive power of the load is... more
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10/07/21

Please help with this maths homework

Solve the following differential equation:(1-(2/y)+x)dy/dx + y=2/x - 1
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10/07/21

Find general solution for the system of linear equations
2x+4y+z=3x+2y+2z=3x+2y+z=2
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10/07/21

Calculus rates question
A road perpendicular to a highway leads to a farmhouse located 5 mile away. An automobile traveling on the highway passes through this intersection at a speed of 50mph.How fast is the distance... more
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10/07/21

A ball rolls off a 1.0 m high table and lands on the floor, 3.0 m away from the table. How far does it move horizonally in this time?
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10/07/21

what is motion.
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10/06/21

Please help. altitud and radio
The space station revolves around the Earth in a circular orbit, with a speed of 27,570 km / h and a normal acceleration of 8.64 m / s2. What is the radius of its orbit? What is its altitude above... more
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07/29/21

HELP please, Geometry
In the triangle below, suppose that m∠W=(7x-5)° , m∠X=(3x-2)°, and =m∠Y=x°Find the degree measure of each angle in the triangle.
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07/13/21

Slove the question step by step.
If two resistors R1 and R2 are connected in parallel, the equivalent resistance becomes 𝑅𝑒𝑞 = 𝑅1.𝑅2/𝑅1+𝑅2 . If 𝑅1 = 22.0 Ω ± 1.1 Ω 𝑎𝑛𝑑 𝑅2 = 47.0 ± 4.7 Ω, find the percentage error in the... more
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07/12/21

Find a linear equation to solve for the following unknown quantities: one number exceeds by 20 and their sum is 42. Find the two numbers
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06/19/21

Find the derivative of the function by using the rules of differentiation.
f(x)= 3x4/3-2/3x3/2+x2-6x+1f’(x) = ?
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06/14/21

If the point (2, 5) is the center of a circle and the point (6, 4) lies on that circle, what is the circle's radius?
If the point (2, 5) is the center of a circle and the point (6, 4) lies on that circle, what is the circle's radius?
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06/14/21

aluminum foil measurements
I have a foil with a mass of 1.235 g. the length is 6 7/8 and the width is 6 1/8. I need help in calculating the volume and thickness of the foil
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06/13/21

Projectile Motion
Maria throws a ball straight up with an initial velocity of 10 m/s. What is its velocity when it returned to the elevation from where it was thrown? Please explain your answer.
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06/07/21

How much work is required to pump all of the water to a spout even with the top of the tank?
A water tank is shaped like a pyramid with its point down. The top base of the pyramid is a square with 8 meter sides. The bottom point of the pyramid is 10 meters below the center of the top base.... more
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06/05/21

what is the ideal gas law

How many moles of N2 gas will occupy a volume of 0.347 L at 8.79 atm and 27 oC? What is the mass of N2? (R = 0.0821)
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06/05/21

Period and Frequency of The Pendulum
I. QUESTIONWhat does the period of a pendulum depend on? What does the period of a pendulum not depend on? Mass? Length? Amplitude?What is the relationship between the period and Mass? Length?... more
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