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1 year ago

What type of stars will potentially one day

Physics

1 answer:

xz_007 [3.2K]1 year ago

4 0

Answer:

2, High mass stars.

Add-on:

i hope this helped at all. im sorry if its incorrect.

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In a laboratory, you determine that the density of a certain solid is 5.23× 10 −6 kg/m m 3 . convert this density into kilograms

tamaranim1 [39]

Density is given as

$\rho = 5.23 * 10^{-6} kg/mm^3$

now we have to convert this density into $kg/m^3$

now we have

$1 m = 1000 mm$

$\rho = 5.23 * 10^{-6} \frac{kg}{(1*10^-3 m)^3}$

$\rho = 5.23 * 10^{-6} \frac{1*10^9 kg}{m^3}$

$\rho = 5.23 * 10^3 kg/m^3$

$\rho = 5230 kg/m^3$

8 0

2 years ago

The 2779-m Brooklyn-Battery Tunnel, connecting Brooklyn and Manhattan, is one of the world's longest underwater vehicular tunnel

Marina CMI [18]

For a cylinder that has both ends open resonant frequency is given by the following formula:
$f= \frac{nv}{2L}$
Where n is the resonance node, v is the speed of sound in air and L is the length of a cylinder.
The fundamental frequency is simply the lowest resonant frequency.
We find it by plugging in n=1:
$f_0= \frac{v}{2L}=\frac{343}{2\cdot 2779}=0.062 Hz$
To find what harmonic has to be excited so that it resonates at f>20Hz we simply plug in f=20 Hz and find our n:
$20= \frac{n343}{2\cdot 2779} =n\cdot f_0$
We can see that any resonant frequency is simply a multiple of a base frequency.
Let us find which harmonic resonates with the frequency 20 Hz:
$20=n\cdot f_0\\ n=\frac{20}{0.062}=322.58$
Since n has to be an integer, final answer would be 323.

3 0

3 years ago

Consider a rigid body that rotates but whose center of mass is at rest. True or false: the rotational kinetic energy of the enti

Anit [1.1K]

Answer:

True

Explanation:

Let us consider a rigid body which contains tiny particles of mass dm each. and the angular velocity ω for each of the particle is same and teh radius of rotation is r.

the linear velocity, v = r ω

The total kinetic energy is given by

$K=\int \frac{1}{2}dm v^{2}$

$K=\int \frac{1}{2}dm r^{2}\omega^{2}$

$K=\frac{1}{2}\times \omega^{2}\int dm r^{2}$

K = 1/2 Iω^2

where I is the moment of inertia.

6 0

2 years ago

you can produce a sound by plucking a string or by blowing into a pipe. how are these two sounds different

Tamiku [17]

Explanation:

both are different types of energy. one is elastic p.e while the other one is made by change in sound waves

5 0

2 years ago

How does displacement, acceleration, time, and velocity affect motion?

Softa [21]

Answer:

The relation between velocity and time is a simple one during uniformly accelerated, straight-line motion. The longer the acceleration, the greater the change in velocity. Change in velocity is directly proportional to time when acceleration is constant.

~Hoped this helped~

~Brainiliest?~

6 0

2 years ago

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