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
Julli [10]
3 years ago
15

An atom’s mass number equals the number of

Physics
2 answers:
steposvetlana [31]3 years ago
8 0
An atom's mass number equals the number of protons plus the number of neutrons.
Hope this helps! (:
oksian1 [2.3K]3 years ago
4 0

b.  protons plus the number of neutrons.

You might be interested in
We divide the electromagnetic spectrum into six major categories of light, listed below. Rank these forms of light from left to
makkiz [27]

electromagnetic spectrum is consisting of many frequency range which is from gamma rays to radio waves

they are of various wavelength and different energy levels

minimum wavelength will occurs at Gamma rays

and maximum wavelength at Radio waves

the list of increasing order of wavelength is as following

Gamma rays < X rays < Ultraviolet < Visible Light < Infrared Waves < Radio Waves

so least to maximum order is

1. Gamma rays

2. X rays

3 Ultraviolet

4 Visible light

5 Infrared waves

6 Radio waves

5 0
3 years ago
Professor Martinez would like to describe the amount of variation there is in his data set. Which of the following should he cal
Finger [1]
Is it not standard deviation? or am i just dumb lol
7 0
3 years ago
Read 2 more answers
The real advantage to hydrostatic weighing is that it __________.
Molodets [167]

Answer:

B. gives one of the most accurate measurements of body fat

5 0
3 years ago
A typical helicopter has four blades that rotate at 334 rpm and have a total kinetic energy of 4.55 105 J. What is the magnitude
djyliett [7]

Answer:

the magnitude of the total angular momentum of the blades is <em>743.71 kg·m²</em>

Explanation:

Converting the angular speed into radians per second:

ω = 334 rpm · (2π rad / 1 rev) · (1 min / 60 s)

ω = 34.98 rad/s

The rotational kinetic energy of the blades is given by:

EK = 1/2 I ω²

where

  • I is the moment of inertia
  • ω is the angular speed

Therefore, rearranging the above equation, we get:

1/2 I ω² = EK

I ω² = 2 EK

I = 2(EK) / ω²

I = 2(4.55 × 10⁵ J) / (34.98 rad/s)²

<em>I = 743.71 kg·m²</em>

<em></em>

Therefore, the magnitude of the total angular momentum of the blades is <em>743.71 kg·m²</em>.

5 0
4 years ago
A mover hoists a 200 kg piano from the ground to a height of 10 m using a single pulley. What was the change in the pianos energ
RideAnS [48]
P.E= Mass x gravity x height   (standard gravity = 10m/s approaximately)
     = 200x10x10= 20000j (D)
7 0
4 years ago
Read 2 more answers
Other questions:
  • You are riding on a school bus and suddenly get thrown forward. What did the bus just do?
    15·2 answers
  • The momentuk of a 3000 kg truck is 64,300 kg at what velocity is the truck traveling
    5·1 answer
  • The reactivity of an atom arises primarily from ___.
    9·1 answer
  • A car goes round a curve of radius 48m, the road is banked at an angle of 15 with the horizontal,at what maximum speed may the c
    7·1 answer
  • A car is initially driving at 30 m/s. It hits a large pothole, after which it is traveling in the same direction but at 25 m/s.
    14·2 answers
  • What unit is used to measure the amount of energy used?
    6·1 answer
  • How long does a player sit out of a game of handball for committing a second or third foul?
    8·1 answer
  • Give reasons why water should not be used in liquid-glass thermometer​
    14·2 answers
  • What causes scientific knowledge to change over time?
    15·2 answers
  • Neurons are most associated with<br> A. senses<br> B. eyesight<br> C. chevrolet
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!