2 years ago

What is Bernoulli's principle???

1 answer:

maks197457 [2]2 years ago

7 0

The Bernoulli's principle is the principle in hydrodynamics that an increase in the velocity of a stream of fluid results in a decrease in pressure.

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What is the role of neutrons in an atom?

mihalych1998 [28]

Hihi!

The correct answer is B) neutron keep protons apart so they don’t repel
each other! The neutron also adds mass to the atom!

I hope I helped!
-Jailbaitasmr

5 0

2 years ago

Read 2 more answers

Two identical loudspeakers are some distance apart. A person stands 5.80 m from one speaker and 3.90 m from the other. What is t

NikAS [45]

Answer:

f = 632 Hz

Explanation:

As we know that for destructive interference the path difference from two loud speakers must be equal to the odd multiple of half of the wavelength

here we know that

$\Delta x = (2n + 1)\frac{\lambda}{2}$

given that path difference from two loud speakers is given as

$\Delta x = 5.80 m - 3.90 m$

$\Delta x = 1.90 m$

now we know that it will have fourth lowest frequency at which destructive interference will occurs

so here we have

$\Delta x = 1.90 = \frac{7\lambda}{2}$

$\lambda = \frac{2 \times 1.90}{7}$

$\lambda = 0.54 m$

now for frequency we know that

$f = \frac{v}{\lambda}$

$f = \frac{343}{0.54} = 632 Hz$

7 0

2 years ago

E. weight = mass x gravitational field strength

allsm [11]

Answer:

e. weight = mass x gravitational field strength

7 0

1 year ago

Two football players are pushing a 60 kg blocking sled across the field at a constant speed of 2.0 m/s. The coefficient of kinet

MArishka [77]

Answer:

The sled slides d=0.155 meters before rest.

Explanation:

m= 60 kg

V= 2 m/s

μ= 0.3

g= 9.8 m/s²

W= m * g

W= 588 N

Fr= μ* W

Fr= 176.4 N

∑F = m * a

a= (W+Fr)/m

a= 12.74m/s²

t= V/a

t= 0.156 s

d= V*t - a*t²/2

d= 0.155 m

7 0

2 years ago

Sound waves in air travel at approximately 330m/s. Calculate the frequency of a 2.5m-long sound wave.

dusya [7]

Frequency = speed ÷ wavelength
= 330m/s ÷ 2.5m
= 132 Hz

8 0

3 years ago