05/08/23

You are standing 18 m in front of a flat mirror. How far behind is your image?
What is the magnification of your image?
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11/28/22

Find a non-constant function f(x) such that its average value over the interval [1,6] is 1
Is there a formula or method to solve this that is fast and easy? The only way I can think to solve this is to guess and check but that is going to take awhile.
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11/11/22

Calculating the de Broglie wavelength?
Calculate the de Broglie wavelength for a Br2 molecule moving at 206 m/s and the textbook weighing 7.27 kg dropping at 8.94 m/s. How do the wavelengths compare to the size of the object?
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11/11/22

Frequency and Energy
What is the frequency of a photon if the energy is 5.16 × 10⁻¹⁹ J? (h = 6.626 × 10⁻³⁴ J • s)
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11/08/22

Let f(x) be the perimeter of a rectangle with an area 16units2 and one side with length x. f(x) = What is the minimum perimeter of all rectangles with this area? Perimeter =

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10/29/22

Write the equation of a line that is perpendicular to x=3 and that passes through the point (0, -4)
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10/28/22

Physics: Gravity

Diwata-1 (aka PHL-Microstat-1) was launched to the International Space Station on March 23, 2016. It was the first Philippine microsatellite and the first satellite built and designed by Filipinos.... more
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10/28/22

: Rotational Equilibrium and Rotational Dynamics
You turned on your classroom ceiling fan at its lowest setting. You measured that the rotation is 250 rev/min. When adjusted to its maximum setting, the speed increases to 450 rev/min in 15 s. (a)... more
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10/14/22

How to generalize the 𝑘𝑡ℎ derivative of 𝑓(𝑥) = sin 𝑥 and 𝑔(𝑥) = cos 𝑥 for every positive integer 𝑘?
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10/13/22

Find the amount of salt in the tank after 4.5 hours.
A tank contains 70 kg of salt and 2000 L of water. A solution of a concentration of 0.0175 kg of salt per liter enters a tank at the rate of 7 L/min. The solution is mixed and drains from the tank... more
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07/22/21

ARC LENGTH AND SURFACE AREA
Find the area of the surface obtained by rotating the curve y=1+6x^2 from 𝑥=0 to x=4 about the y-axis. 
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07/13/21

absorbance and fluorescence
In which of the following cases does absorbance and fluorescence occur:a) a molecule returns to the ground state electron from a triplet excited state losing its extra energy with the photon... more
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