1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ede4ka [16]
3 years ago
7

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of _____ amu. (Enter a whole number.)

Physics
2 answers:
Varvara68 [4.7K]3 years ago
5 0
It would be 13, the number of protons is equal to the atomic number. Which makes this nitrogen. You then add the protons and neutrons to make the mass
7+6=13
Ganezh [65]3 years ago
3 0

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of 13 amu.

You might be interested in
.<br>1. How does the arrangement of a pulley system affect its ideal mechanical advantage​
lukranit [14]

Answer: In a pulley, the ideal mechanical advantage is equal to the number of rope segments pulling up on the object. The more rope segments that are supporting to do the lifting work, the less pressure that is needed for the job.

Explanation:

7 0
3 years ago
1. Which has more kinetic energy, a 40 kg cheetah running at 25 m/s or a 4,000 kg elephant moving at 2 m/s? How much more energy
s2008m [1.1K]

Answer:

1. The elephant has more kinetic energy at this speed and mass. It has 4,500 J more KE.

2. The elephant would have to go at a speed of 2.5 m/s to reach the same KE as the cheetah.

Explanation:

You would use the formula KE=1/2mv^2.

This formula would be filled in and completed twice, once for the elephant and once for the cheetah.

Cheetah:

KE = 1/2 (40) (25) ^2

KE = 12,500 J

Elephant:

KE = 1/2 (4,000) (2) ^2

KE = 8,000 J

This shows that the cheetah has more KE.

Then you would subtract the elephants amount of J from the cheetahs to find the difference.

Difference = 12,500 J - 8,000 J

Difference = 4,500 J

I hoped this helped with the first part :)

For the second part:

To find the speed the elephant would have to run you would fill in and complete the equation once more with different distance results.

KE = 1/2 (4,000) (2.5) ^2

KE= 12,500 J

7 0
3 years ago
What causes competition among organisms?
irga5000 [103]

Answer:

Whats up Bmw,

The organisms is caused when both the organisms or species are harmed, which is limited supply of at least one resource from food or even water used by both can be a factor.

Explanation:

Hope I helped you, and let me know if you need help on anything else :p

8 0
4 years ago
Read 2 more answers
A standing wave is established on a string that is fixed at both ends.
oksano4ka [1.4K]

Answer:

d. The length of the string is equal to one-half of a wavelength.

Explanation:

For a standing waves vibrating with Fundamental Frequency will be vibrate in one loop so  Length 2 L =  λ    ⇒  L = 1/2 λ

7 0
3 years ago
Read 2 more answers
What is the frequency of an X-ray with wavelength 0.13 nm ? Assume that the wave travels in free space. Express your answer to t
dem82 [27]

Answer:

Frequency, f=2.30\times 10^{18}\ Hz

Explanation:

Given that,

The wavelength of the x-rays, \lambda=0.13\ nm=0.13\times 10^{-9}\ m

We need to find the frequency of an x-ray. All electromagnetic wave travel with a speed of light. It is given by the formula as :

c=f\lambda

f is the frequency

f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{0.13\times 10^{-9}}\\\\f=2.30\times 10^{18}\ Hz

So, the frequency of an x-ray is 2.30\times 10^{18}\ Hz. Hence, this is the required solution.

5 0
3 years ago
Other questions:
  • A 30,000kg train moves at 45m/s How how much kinetic energy with the train have?
    7·1 answer
  • a 60kg rock in on a mountain in banff national park breaks free from a ledge and falls down 500 meters to the bottom of the moun
    12·1 answer
  • Two dogs pull on a toy. One pulls with a force of 10N, the other with a force of 15N. In what relative directions can the dogs a
    15·1 answer
  • Difference between global warming and climate change
    11·1 answer
  • What is the kinetic energy of a 8kg cart pushed at a rate of 2 m/s?<br> Help please
    10·1 answer
  • The tendency of an object to resist a change in motion is called ___________________
    8·2 answers
  • You and your lab partner, Mel, are engrossed in a chemistry activity using beans to compute the average atomic mass of an elemen
    6·2 answers
  • U guys are the best I’m surprised I’m getting all of this right
    15·2 answers
  • A friend tells you that objects with more mass fall faster because they
    11·1 answer
  • The density of pure solid copper is 8.94 g/cm3. What volume does 5.0 kilograms of copper occupy? Leave your answer in the approp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!