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
erik [133]
3 years ago
7

How many neutrons does element x have if it's atomic number is 27 and it's mass number is 74

Physics
1 answer:
Makovka662 [10]3 years ago
3 0

Atomic number=Proton count

Atomic mass=Proton count+ neutron count

Neuton Count=Atomic mass-Proton count

Proton count=Atomic number=27

Mass number=74

Neuton count= 74-27=47

You might be interested in
How much of earths gravitational force acts on everyone and everything onboard of the international space station?
liraira [26]

B) Approx. 90%

The actual value is 0.89g

4 0
3 years ago
A 0.050 kg toy truck moving right at 0.20 m/s collided with a toy car weighing 0.015 kg initially at rest, on a frictionless tra
Kamila [148]

Answer:

0.1667 m/s

Explanation:

m1V1 + m2V2 = m1V3 + m2V4

0.01 = ( 0.0075) + (0.015 * V4)

V4 = (0.01 - 0.0075) / (0.015)

V4= 0.1667

7 0
2 years ago
Read 2 more answers
A conveyor belt is used to move sand from one place to another in a factory. The conveyor is tilted at an angle of 18° above the
brilliants [131]

Answer:

x = 2.044 m

Explanation:

given data

initial vertical component of velocity = Vy = 2sin18

initial horizontal component of velocity = Vx = 2cos18

distance from the ground yo = 5m

ground distance y = 0

from equation of motion

y = yo+ V_y t +\frac{1}{2}gt^2

0 = 5 + 2sin18+ \frac{1}{2}*9.8t^2

solving for t

t = 1.075 sec

for horizontal motion

x = V_x t

x = 2cos18*1.075

x = 2.044 m

8 0
3 years ago
What is the connection between change in momentum and impulse
Katena32 [7]
The change in momentum of an object equals the impulse applied to it
6 0
3 years ago
The atmosphere protects us from _____ and _____.
sveticcg [70]

Answer: B. meteorites, UV rays

The earth's atmosphere plays an important role in shielding the space rocks and meteorites enters inside the earth due to collision with the celestial body. Due to high heat and pressure in the mesospheric layer of the atmosphere these meteorites burned up before reaching the biosphere or hydrosphere system of the earth. The UV rays are protected from entering into the earth atmosphere by the ozone layer present in the stratosphere of the atmosphere. Both meteorites and UV rays can negatively effect the human population. Therefore, the atmosphere is an agent which provides protection against them.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A positive point charge Q is fixed on a very large horizontal frictionless tabletop. A second positive point charge q is release
    11·1 answer
  • If the charge remains the same but the radius of the sphere is doubled, the electric flux coming out of it will be
    9·1 answer
  • The answers to these please
    11·1 answer
  • a. What is the absorption coefficient for tin, with an imaginary part of the refractive index equal to 5.3 for 589.3-nm light? b
    9·1 answer
  • You should always wear your seatbelt just in case the car comes to an abrupt stop. The seatbelt will hold you in place so that y
    8·2 answers
  • A 3,000-N force acts on a 200-kg object, what is the acceleration?​
    14·2 answers
  • Your boss asks you compare two sound waves and determine which has the higher frequency. Wave A has a period of 4⁄100 second and
    6·2 answers
  • Interactive Solution 28.5 illustrates one way to model this problem. A 7.11-kg object oscillates back and forth at the end of a
    13·1 answer
  • Sarah weighs 392 N. She pushes a 56 kg rock with a force of 65 N. What force does the rock exert on Sarah?
    6·1 answer
  • Which of the following is the type of rock
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!