04/04/23

A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.735 m from the axis of rotation, which passes...
A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.735 m from the axis of rotation, which passes... more
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04/03/23

what is the wavelength differences between visible light and ultraviolet?
Visible light has wavelengths from 400 to 700 nm, whereas the wavelength region for ultraviolet radiation is 1.0×10-8 to 1.0×10-7 m.We can say that:1. The frequency of visible light is (higher... more
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04/03/23

Find the critical point of the function f(x,y)=−(36x+6y^2+ln(|x+y|)) . Use the Second Derivative Test to determine whether it is a local min, max, saddle point or test fails
Find the critical point of the function f(x,y)=−(36x+6y^2+ln(|x+y|)) .Use the Second Derivative Test to determine whether it is a local min, max, saddle point or test fails
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04/01/23

Is it true that an object falls no faster after 36 feet from the ground?
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03/30/23

At what speed did the athlete need to shoot the pebble to hit the target
An athlete needs to hit a moving target that is launched vertically. The target launcher launches the target at 54km/h and is 27m away from the athlete. If the athlete is reacting after 280ms still... more
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03/29/23

Phy Review Question Motion
A mass M is suspended from a spring and oscillates with a period of 0.960 s. Each complete oscillation results in an amplitude reduction of a factor of 0.965 due to a small velocity dependent... more
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03/29/23

Capacitors And potential difference
Two capacitors, C1 = 24.0 𝜇F  and C2 = 33.0 𝜇F, are connected in series, and a 24.0-V battery is connected across them.(a) Find the equivalent capacitance, and the energy contained in this... more
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03/28/23

ƒ(x) = (1/4)x^4 - 2x^2
ƒ(x) = (1/4)x4 - 2x2(a) Find the intervals on which ƒ is increasing or decreasing. (b) Find the local maximum and minimum values of ƒ. (c) Find the intervals of concavity and the inflection points.
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03/28/23

Calculate the final velocity right after a 112 kg rugby player who is initially running at 7.95 m/s collides

Calculate the final velocity right after a 112 kg rugby player who is initially running at 7.95 m/s collides head‑on with a padded goalpost and experiences a backward force... more
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03/28/23

wheel wit low friction bearing takes 1.0 h to stop after the motor power is turned off. The flywheel was originally rotating at 5.5 rad/s. How many revolutions does the flywheel make before it stops?
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03/28/23

A pipe that is open at both ends has a fundamental frequency of 320 Hz when the speed of sound in air is 331 m/s.
(a) What is the length of this pipe?(b) What are the next two harmonics?(c) What is the fundamental frequency of this pipe when the speed of sound in air is increased to 370 m/s due to a rise in... more
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03/28/23

What are the first three harmonics of a note produced on a 32.0 cm long violin string if waves on this string have a speed of 280.0 m/s?
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03/28/23

A fire engine is moving at 40 m/s and sounding its horn. A car in front of the fire engine is moving at 30 m/s, and a van in front of the car is stationary
Which observer hears the fire engine's horn at a higher pitch, the driver of the car or the driver of the van? Both hear the same pitch. The driver of the car hears the higher pitch.      The... more
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03/19/23

Ideal gas law question
The pistons of two identical cylinders are rigidly connected to each other. The cylinders contain the same amount of the same heated gas. Suppose that one cylinder is heated and the other is... more
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03/16/23

Find a plane containing the point (-7,-6,1) and the line r(t)=(2,8,3)+t(7,3,-2)
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03/16/23

The distance between two successive crests of a certain transverse wave is 1.80 m. Eight crests pass a given point along the direction of travel every 13.0 s. Calculate the wave speed.
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03/16/23

A wave traveling in the positive x direction with a frequency of 27.0 Hz is shown in the figure below. A = 8.3 cm and B = 10 cm. Find the following values for this wave.
(a) period:(b) speed:
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03/14/23

This is a bit confusing:
469.It is given that the sides of an isosceles trapezoid have lengths 3 in, 15 in, 21 in, and 15 in. Make a diagram. Show that the diagonals intersect perpendicularly.
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03/07/23

The Thevenin impedance of a source is ZTh= 120+j60 ohms , while the peak Thevenin voltage is VTh=165+j0V. Determine the maximum available average power from the source
The Thevenin impedance of a source is ZTh= 120+j60 ohms , while the peak Thevenin voltage is VTh=165+j0V. Determine the maximum available average power from the source.
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03/06/23

find the size of the contact force between the two blocks.
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.45 kg, M2 = 3.38 kg, and F = 5.40 N, find the size of the contact force between the two... more
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03/05/23

Related Rated in Calc 1
A television camera is positioned 4,000 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight.... more
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03/05/23

Closing the gap between graphs

I want to raise the lower graph g(x) toward the upper graph f(x) to make the points of the lower graph as close as possible to those of the upper graph, in other words, to make the graphs "match"... more
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03/01/23

Word problems, flight.

A flight along the US takes longer east to west than it does west to east. Assume that winds are constant in an eastward direction. When flying westward, the tailwinds increase its speed. The time... more
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01/27/23

This question has 9 parts labeled A - I.

The position of a particle moving along an x axis is given by x = 16.0t2 - 6.00t3, where x is in meters and t is in seconds. Determine (a) the position, (b) the velocity, and (c) the acceleration... more
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01/26/23

the cost of 12 oranges and 7 apples is $5.36. 8 oranges and 5 apples cost $3.68. find the cost of each
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