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2 years ago

PLEASE HELP show the calculation of the number of neutrons of hydrogen

Physics

1 answer:

xz_007 [3.2K]2 years ago

7 0

The answer is 2.3 hope this helps texted me and tell me if it’s right

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A mass m is attached to a spring which is held stretched a distance x by a force f (fig. 7-28), and then released. the spring co

guapka [62]

Spring is stretched by force f to distance "x"

now here by force balance we can say

$f = kx$

$k = \frac{f}{x}$

now here we will we say that energy stored in the spring will convert into kinetic energy

$\frac{1}{2} kx^2 = \frac{1}{2}mv^2$

$\frac{f}{x} (x^2} = mv^2$

now solving above equation we will have

$v =\sqrt{ \frac{fx}{m}}$

PART 2)

now for half of the extension again we can use energy conservation

$\frac{1}{2}kx^2 - \frac{1}{2}k(x/2)^2 = \frac{1}{2} mv^2$

$\frac{3}{4}kx^2 = mv^2$

$\frac{3}{4}fx = mv^2$

now the speed is given as

$v = \sqrt{\frac{3fx}{4m}}$

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3 years ago

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Rest and motion are relatives terms justify the statement

Anna007 [38]

Answer:

rest and motion are the relative terms because they depend on the observer's frame of reference. So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body

Explanation:

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3 years ago

Different between : Metalloids and alloys

iVinArrow [24]

Answer:

Alloys are just mixtures of metal and metalloids are metallic substances with properties of metal.

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3 years ago

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A tube of water is open on one end to the environment while the other end is closed. The height of the water relative to the bas

Andreas93 [3]

Answer:

1.06 atm

Explanation:

On the open end of the tube, the pressure will be the sum of atmospheric pressure and the pressure due to the height of water

The pressure due to a height of water = ρgh

where ρ is the density of water = 1000 kg/m^3

g is the acceleration due to gravity = 9.81 m/s^2

h is the height of the water column

The height of water column on the open end = 100 cm = 1 m

pressure on this end = ρgh = 1000 x 9.81 x 1 = 9810 Pa

Atmospheric pressure = 101325 Pa

The total pressure on the open end = 101325 Pa + 9810 Pa = 111135 Pa

The pressure due to the water column on the closed end = ρgh

The height of the water in the closed end = 40 cm = 0.4 m

The pressure due to this column of water = 1000 x 9.81 x 0.4 = 3924 Pa

The resultant pressure on the water on the top of the closed end of the tube = 111135 Pa - 3924 Pa = 107211 Pa

In atm unit, this pressure = 107211/101325 = 1.06 atm

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3 years ago

A glass of root beer with a scoop of ice cream floating on top and a straw sticking out.

vampirchik [111]

Answer:

These forces are all equal and cancel each other out. Gravity pushes downward on the ice cream. This can also be called the weight of the ice cream. Buoyant force pushes the ice cream upward

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2 years ago

PLEASE HELP show the calculation of the number of neutrons of hydrogen​

PLEASE HELP show the calculation of the number of neutrons of hydrogen