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soldi70 [24.7K]
4 years ago
5

Why do mass numbers have a trailing decimal? use the following words describe for credit isotopes protons neutrons electrons in

carbon 13
HELP ME
Physics
1 answer:
Dmitry_Shevchenko [17]4 years ago
3 0

Answer:a number without a decimal are generally not significant. Isotopes are atoms of same element which have the same atomic number but different number of neutrons. Isotopes of elements are represented in the following way: In an atom, the number of protons is equal to its atomic number.. An atom of an element is neutral in nature so atom contains the same number of protons and electrons.

Explanation:

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A balloon is filled with 73 L of air at 1.3 atm pressure. What pressure is needed to change the volume to 43L?​
Licemer1 [7]

Answer:

roughly 2.2 atm

Explanation:

using Boyle's law (P1V1=P2V2),

73×1.3=43×x

x= 2.21 or 2.2 atm

8 0
3 years ago
How many neutrons does element X have if its atomic number is 48 and its mass number is 167?
Black_prince [1.1K]
You would have to subtract the mass number with atomic number which will give you 119 number of neutrons.
7 0
4 years ago
Using hooke's law, f s p r i n g = k x , find the distance a spring with an elastic constant of 4 n/cm will stretch if a 2 newto
Assoli18 [71]

Answer: The correct answer is Option d.

Explanation:

Formula for Hooke's Law states that:

F_{spring}=kx

where, F = Force applied = 2N

k = spring constant = 4 N/cm

x = displacement of the spring from equilibrium position = ? cm

Putting values in above equation, we calculate the displacement or distance of the spring, we get:

2N=4N/cm\times x\\\\x=\frac{1}{2}cm

Hence, the correct option is Option d.

6 0
4 years ago
Read 2 more answers
A sinusoidal wave is traveling along a rope. The oscillator that generates the wave completes 43.0 vibrations in 29.0 s. A given
Aliun [14]

Answer:

wavelength is 20.71 cm

Explanation:

given data

wave = 43.0 vibrations

time = 29 s

wave travels = 430 cm

time t2 = 14 s

to find out

wavelength

solution

we know here wavelength formula that is

wavelength = velocity / frequency  .........................1

here frequency = 43 / 29 = 1.4827 Hz

and velocity = 430 / 14 = 30.71 cm/s

so here from equation 1 put all value

wavelength = velocity / frequency

wavelength = 30.71 / 1.4827

wavelength = 20.71 cm

so wavelength is 20.71 cm

8 0
3 years ago
Which of the following is not part of the Big Bang theory? A. Gravity pulled stars into galaxies. B. In the beginning the univer
Klio2033 [76]

d is dah answer my dude

7 0
4 years ago
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