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
Y_Kistochka [10]
2 years ago
6

What is an isotope?

Physics
1 answer:
Troyanec [42]2 years ago
8 0

Answer:

A. Atoms of the same element that have different numbers of nutrions.

You might be interested in
Let v1, , vk be vectors, and suppose that a point mass of m1, , mk is located at the tip of each vector. The center of mass for
g100num [7]

Answer:

Explanation:

Center of mass is give as

Xcm = (Σmi•xi) / M

Where i= 1,2,3,4.....

M = m1+m2+m3 +....

x is the position of the mass (x, y)

Now,

Given that,

u1 = (−1, 0, 2) (mass 3 kg),

m1 = 3kg and it position x1 = (-1,0,2)

u2 = (2, 1, −3) (mass 1 kg),

m2 = 1kg and it position x2 = (2,1,-3)

u3 = (0, 4, 3) (mass 2 kg),

m3 = 2kg and it position x3 = (0,4,3)

u4 = (5, 2, 0) (mass 5 kg)

m4 = 5kg and it position x4 = (5,2,0)

Now, applying center of mass formula

Xcm = (Σmi•xi) / M

Xcm = (m1•x1+m2•x2+m3•x3+m4•x4) / (m1+m2+m3+m4)

Xcm = [3(-1, 0, 2) +1(2, 1, -3)+2(0, 4, 3)+ 5(5, 2, 0)]/(3 + 1 + 2 + 5)

Xcm = [(-3, 0, 6)+(2, 1, -3)+(0, 8, 6)+(25, 10, 0)] / 11

Xcm = (-3+2+0+25, 0+1+8+10, 6-3+6+0) / 11

Xcm = (24, 19, 9) / 11

Xcm = (2.2, 1.7, 0.8) m

This is the required center of mass

6 0
3 years ago
Just the the moon seems to shine and the two below it.
katrin [286]
The first one is revolves
5 0
2 years ago
A 6 cm object is 15 cm from a convex lens that has a focal length of 5 cm. What is the distance of the image from the lens, to t
Vesna [10]

Answer:

7.50 cm

Explanation:

The formula

1/v + 1/u = 1/f

Is used.

where.

u is the object distance.

v is the image distance.

f is the focal length of the lens.

1/v + 1/15 = 1/5

1/v = 1/5 - 1/15

1/v = (3-1)/15

1/v = 2/15

2v = 15

V = 15/2

V = 7.5 cm

For focal length, f in lens is always taken as negative for concave and positive for convex. ... And for image distance, V in lens it is taken as positive in Convex lens since image is formed on +X side. It is taken as negative in Concave lens since image is formed in -X side of the Cartesian.

4 0
2 years ago
PLS PLS PLS PLS PLS PLS PLS PLS PLS PLS PLS HELP
7nadin3 [17]

Answer:

The poles of an electromagnet can even be reversed by reversing the flow of electricity. If a wire carrying an electric current is formed into a series of loops, the magnetic field can be concentrated within the loops. ... All of their little magnetic fields add together, creating a stronger magnetic field.

Explanation:

8 0
3 years ago
Low birth rates, death rates are constant
Mariana [72]

1 is b high birth rate and death rate 2 is a low birth rates death are constant and 3 is c high birth rate and low death rate

Explanation:

4 0
3 years ago
Other questions:
  • A charge of 31 micro-C is placed on the y axis at y = 8 cm and a 55 micro-C charge is placed on the x axis at x = 3 cm. If both
    10·1 answer
  • Which of the following is INCORRECT??
    6·2 answers
  • The amount of energy transported by a wave is most closely related to the wavelength of the wave. True or False?
    13·2 answers
  • In 8,450 seconds, the number of radioactive nuclei decreases to 1/16 of the number present initially. What is the half-life (in
    6·1 answer
  • A car driver takes a total of two hours to make a journey of 75 km. She has a coffee
    11·1 answer
  • What must be the reaction force when someone hits a tree with an axe?
    12·1 answer
  • Please help! Will give a lot of points
    7·1 answer
  • Which of the following has greater kinetic energy?
    6·1 answer
  • a 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal. it is connected by a very light string ove
    7·1 answer
  • Why is it so difficult for astronomers to see new stars in the process of birth?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!