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
Verdich [7]
3 years ago
10

In the analytical method, we use the Pythagorean theorem to find the magnitude of the resultant because ____.

Physics
1 answer:
polet [3.4K]3 years ago
8 0

Answer:

it obeys the law of vector addition

Explanation:

In the analytical method, we use the Pythagorean theorem to find the magnitude of the resultant because it obeys the law of vector addition.

The resultant of two vectors A and B is given by;

R' = A' +  B'

R = \sqrt{A^2 + B^2}

Therefore, Pythagorean theorem is used if the two quantities are vectors and vector quantities obey the law of vector addition.

You might be interested in
A slender, uniform metal rod of mass M and length lis pivoted without friction about an axis through its midpoint andperpendicul
lys-0071 [83]

Answer:

Explanation:

Moment of inertia of the metal rod pivoted in the middle

= M l² / 12

If the spring is compressed by small distance x twisting the rod by angle θ

restoring force by spring

= k x

moment of torque  about axis

= k x l /2

= k θ( l /2 )²     ( x / .5 l = θ )

=

moment of torque = moment of inertia of  rod  x angular acceleration

k θ( l /2 )²   = M l² / 12 d²θ/dt²

d²θ/dt² = 3 k/M  θ

acceleration =  ω² θ

ω² = 3 k/M

ω = √ 3 k / M

8 0
3 years ago
Read 2 more answers
Can you answer fast plz
tatyana61 [14]

Answer:

wavelength frequency

energy

energy

frequency

Explanation:

7 0
3 years ago
Pure sodium metal placed in water will spark and ignite, as well as form bubbles and gas. What are the signs that this is a chem
ad-work [718]
<h3><u>Answer;</u></h3>
  • Heat is produced
  • Light is produced
  • Bubbles appear
<h3><u>Explanation;</u></h3>
  • Chemical reactions involve the chemical interaction of two or more chemical substances, result in a new substance being formed, and are usually irreversible.
  • The signs of chemical reactions include gas formation, energy release in the form of light or flame, heat absorption, precipitate formation, and color change.
7 0
4 years ago
Read 2 more answers
Describe what happens to the particles of water when it boils.
Nezavi [6.7K]

Answer:

The liquid turns to a gas.

Explanation:

If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. Particles in the middle of the liquid form bubbles of gas in the liquid.

8 0
3 years ago
A crowbar 2727 in. long is pivoted 66 in. from the end. What force must be applied at the long end in order to lift a 600600 lb
NikAS [45]

To solve this problem we will apply the concepts related to equilibrium, for this specific case, through the sum of torques.

\sum \tau = F*d

If the distance in which the 600lb are applied is 6in, we will have to add the unknown Force sum, at a distance of 27in - 6in will be equivalent to that required to move the object. So,

F*(27-6)= 6*600

F = \frac{6*600}{21}

F= 171.42 lb

So, Force that must be applied at the long end in order to lift a 600lb object to the short end is 171.42lb

4 0
3 years ago
Other questions:
  • As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted o
    14·1 answer
  • how far the medium (crests and troughs, or compressions and rarefactions) moves from ________ the place the medium is when not m
    10·1 answer
  • The highest parts of a transverse wave are called
    9·1 answer
  • Unweathered rock that underlies soil is subsoil. True False
    13·2 answers
  • one layer of earth's atmosphere is called the stratosphere. At one point above earth's surface the stratosphere extends from an
    14·2 answers
  • A light ray traveling through medium 1, index of refraction n1n1n_1 = 1.75, reaches the interface between medium 1 and medium 2,
    13·1 answer
  • Which landforms can be associated with the three types of plate boundaries?
    9·1 answer
  • 5. What things would settle in pond water, making it turn to land (terrestrial) succession?
    7·1 answer
  • A rock is dropped straight down from roof. It hits the ground with a velocity of 28.2 m/sec. How high was the roof, and how long
    10·1 answer
  • Clapping your hands is what type of energy transfer or transformation
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!