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
Mrac [35]
4 years ago
5

One isotope of a metallic element has the mass number 65 and 35 neutrons in the nucleus. the cation derived from the isotope has

28 electrons.
a. what is the symbol for the element?
b. what is the charge?
Physics
1 answer:
Lina20 [59]4 years ago
7 0
The mass number of an isotope is the sum of the numbers of protons and the numbers of the neutron. Given that the mass number is 65 and the number of neutrons is 35, the number of protons is 30. The atom is then Zinc (Zn). The charge is equal to +2, as it lacks 2 more electrons. 
You might be interested in
The magnetic flux through a metal ring varies with time t according to ΦB = at3 − bt2, where ΦB is in webers, a = 6.00 Wb s−3, b
pychu [463]

To solve this problem it is necessary to apply the second derivative of the function to find the maximum time reference and thus calculate the maximum voltage.

With the maximum voltage by Ohm's Law it is possible to find the maximum current.

Ohm's law defines that

E = I*R

Where,

I = Current

R= Resistance

On the other hand by faraday studies and the potential can be expressed at the rate of change of the electric flow, that is

E = \frac{d\phi}{dt}

Replacing with our values we have that

E = \frac{d(6t^3-18t^2)}{dt}

E = -18t^2 +36t

The second derivative is

E' = -36t+36

When E' = 0 we have a Maximum, then

0 = -36t+36

t = 1

Therefore when the time is 1s E has a Maximum, replacing at the function

E(t) = -18t^2 +36t

E(1) = -18(1)^2 +36(1)

E = 18V

Then the maximum current will be given by

I = \frac{E}{R}

I = \frac{18}{2.8}

I = 6.42A

Therefore the maximum current induced in the ring is 6.42A

6 0
4 years ago
Two parallel wires separated by 4.00cm repel each other with a force per unit length of 2.00×10⁻⁴ N/m . The current in one wire
Lesechka [4]

The currents in the wires are in opposite directions.

  • Two long parallel wires separated by a distance 'r' having current I_1 and I_2  have force per unit length which is given by   f=\frac{u_0 I_1I_2}{2\pi r}.....(1)  where u_0 is permittivity of free space whose value is 4\pi \times10^{-7}Tm/A .

If the current flowing through the wire are in same direction then they the wire attract each other and if the current flowing through the wire are opposite in direction then they the wire repel each other .

As it is given that two wires repel each other which means that current in the wires are in opposite direction .

Hence current flowing through wires are opposite in direction.

Learn more about force per unit length here :

brainly.com/question/15071504

#SPJ4

5 0
2 years ago
The first step in the scientific method is to ___________.
Ann [662]
A. Is the answer definitely
7 0
3 years ago
Read 2 more answers
A persons resting rate heart rate typically blank with age
meriva

Answer:

Your resting heart rate — the number of times your heart beats per minute while your body is relaxed and at rest — does not change significantly with age.

Explanation:

7 0
3 years ago
Read 2 more answers
Why is Pluto different from our other planets?
sineoko [7]
Pluto is a dwarf planet that's why
5 0
3 years ago
Read 2 more answers
Other questions:
  • 7. Two workers must pick up bricks that lie on the ground and place them on a worktable. They each
    11·1 answer
  • Which example involves the transformation of chemical energy directly into light energy?
    6·2 answers
  • A force that varies with time is applied to an object. The force increases linearly from zero to twenty-four newtons during the
    11·1 answer
  • How does the range change as the angle increases?
    7·1 answer
  • The first step in turning a rock into a sediment is ________. Select one:
    14·1 answer
  • A ball is throw into the sky at 18m/s. How high can it reach?
    15·1 answer
  • A car has 10000kg starts from rest and attains velocity of 20m/s in 5 seconds find the force
    12·1 answer
  • True or False: Any wavelength of light would work for this experiment. Explain your response, including the term quantum or quan
    8·1 answer
  • A retaining wall is 5m long (into the plane of the paper), and it is supported by an anchor rod. The soil it supports has a weig
    11·1 answer
  • Explain What is transformer?<br>Explain d.c motor and a.c motor ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!