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3 years ago

If 30 N of force is exerted over an area of 20 m2, how much pressure is being applied

1 answer:

4 0

The formula to find the Pressure is: P (Pressure) = F(Force) / A(Area)

Since F = 30 N, and A = 20 m2

So $P = \frac{F}{A} = \frac{30}{20} = 1.5$

So, the pressure being applied is 1.5 Pascals.

Hope this helps :)

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American eels (Anguilla rostrata) are freshwater fish with long, slender bodies that we can treat as a uniform cylinder 1.0 m lo

madam [21]

Answer:

option D

Explanation:

given,

uniform length of cylinder = 1 m

diameter of the cylinder = 10 cm = 0.1 m

Eels have been recorded to spin = 14 rev/s

camera records at = 120 frames per second

time = $\dfrac{1}{120}\ s/frame$

angle at which eel rotate = ?

ω = 14 rev/s

ω = 14 x 2 π rad/s

ω = 28 π rad/s

angle at which eel rotate

θ = ω t

θ = $28\pi\times \dfrac{1}{120}$

θ = 0.733 rad

θ = $0.733 \times \dfrac{180^0}{2\pi}$

θ = $42^0$

Hence, the correct answer is option D

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3 years ago

Us your understanding of asexual reproduction to explain why is it important that organisms reproduce in a variety of ways.

valentina_108 [34]

The genetic material is identical in asexual reproduction- in order for organisms to be strong they need variety so if a disease comes, some of the species may be able to fight it off because of their varied genetics

5 0

3 years ago

if the frequency of a sound wave in air remains constant, its energy can be varied by changing its what

Anastaziya [24]

Amplitude, is the answer to the question

6 0

3 years ago

Read 2 more answers

An 18-mm-wide diffraction grating has rulings of 710 lines per millimeter. monochromatic light of wavelength 506 nm wavelength i

aliina [53]

W= 18*10^-3m
N= 18*710 ( because you have 710 slits per mm ) = 12780
lambda = 506*10^-9

The first step is to workout d.
d = w/N
d =18*10^-3m/12780
d =1.41*10^-6m

The second step is to work out the maximum number of m.
Since sin (theta) = less than 1, then m*lambda/d = less then 1,
therefore m= less than d/lambda
( I know thats confusing but trust me )
so m is less than 1.41*10^-6m/506*10^-9
= 2.7
Therefore use m = 2

Lastly put it all into the formula
dsin (theta) = m*lambda so:
theta = sin^-1(m*lambda/d)
theta = sin^-1(2*506*10^-9/1.41*10^-6m)
theta = 45.95 degrees or 46 degrees

7 0

4 years ago

Relationships between tables can be illustrated through a(n) ____ relationship diagram.

Alex_Xolod [135]

I believe the correct term to fill in the blank is "entity". Relationships between tables can be illustrated through an entity relationship diagram. This diagram shows the relationships of entity sets stored in a database. Hope this answers the question. Have a nice day.

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3 years ago