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
posledela
3 years ago
9

The atom of an element x has 21protrons and 23neutrons. What is the

Physics
1 answer:
Reil [10]3 years ago
4 0
A. 21 electrons
B. 44
C. 23 neutrons
You might be interested in
Which test was conducted on the skin found under the victim’s nails?
BARSIC [14]
Y-STR analysis. It is a DNA test used to compute and match with the possibility via lap.
5 0
3 years ago
Read 2 more answers
What is sedentary lifestyle?
Effectus [21]
A sedentary lifestyle is when you don't make any exercise. For example, if I spent a whole week just sitting down answering questions, that would be an example of a sedentary lifestyle, because I'm not running or jogging. Having that type of lifestyle can make you fat and get health problems.

Have a nice day! :)
7 0
3 years ago
A 30-g car rolls from a hill 12 cm high and is traveling at 154 cm/s as it travels along a 275 cm horizontal track. What is the
Bond [772]
Momentum of the car is 46.2 kgm/s
8 0
3 years ago
A wave traveling in water has a frequency of 500.0 Hz and a wavelength of 3.00 m. What is the speed of the wave?
Sergeu [11.5K]

Answer:

1500 m/s

Explanation:

Recall that for a wave,

Speed = frequency x wavelength

here we are given frequency = 500 Hz and wavelength = 3m

simply substitute into above equation

Speed = 500 Hz x 3m

= 1500 m/s

6 0
3 years ago
The crankshaft in a race car goes from rest to 3000 rpm in 2.0 s.
a_sh-v [17]
The equations are analogous to that for linear movement:
acceleration = (final velocity - initial velocity) / time
acceleration = (3000 rpm - 0 rpm) / 2.0 s
a) acceleration = 1500 rpm/s or 25 rp(s^2)
For the displacement
displacement = initial velocity*time + 0.5*acceleration*time^2
displacement = (0)*(2 s) + (0.5)(25 rps^2)*(2 s)^2
b) displacement = 50 revolutions
3 0
2 years ago
Read 2 more answers
Other questions:
  • Two coils close to each other have a mutual inductance of 32 mH. If the current in one coil decays according to I=I0e−αt, where
    9·1 answer
  • WILL NAME THE BRAINLIEST! An airplane undergoes the following displacements: It first flies 72 km in a direction of 30° East of
    8·1 answer
  • Gold has a specific heat of 0.130 J/g*C. If 195 joules of heat are added to 15 grams of gold how much does the temperature of th
    7·1 answer
  • A +0.2 µC charge is in an electric field. What happens if that charge is replaced by a +0.4 µC charge?
    8·1 answer
  • Sheila did 110 J of work to move a chair 2 m to the right. How much force did Sheila use to Sheila use to move the chair
    13·2 answers
  • 1. An electric iron has a rating of 750W, 220V. Calculate:
    8·1 answer
  • The 360-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil is to su
    12·1 answer
  • Which force is an attractive force that is affected by the masses of objects?
    13·1 answer
  • The process of mitosis makes body cells which are also called_______ cells.<br> NEED DONE ASAP!!!!!
    8·2 answers
  • Add these two velocity vectors to find the magnitude of their resultant vector.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!