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
Semmy [17]
3 years ago
7

Scientists classify rocks by

Physics
1 answer:
Mashcka [7]3 years ago
6 0
Composition and texture
You might be interested in
If you increase the weight of an object, the frictional force increases but the coefficient does not change why
aleksandr82 [10.1K]

Answer:

The coefficient of friction should in the majority of cases, remain constant no matter what your normal force is. When you apply a greater normal force, the frictional force increases, and your coefficient of friction stays the same. Here's another way to think about it: because the force of friction is equal to the normal force times the coefficient of friction, we expect (in theory) an increase in friction when the normal force is increased.

One more thing, the coefficient of friction is a property of the materials being "rubbed", and this property usually does not depend on the normal force

8 0
2 years ago
I need help with this
Vilka [71]

The right answer is atom. Please rate brainiest.

3 0
3 years ago
Kepler modified Copernicus's model of the universe by proposing that the A. Planets follow a circular orbit around the sun. B. P
lisabon 2012 [21]

Answer:

I believe the answer is B, the paths of the planets follow an elliptical orbit around the sun.

5 0
3 years ago
Read 2 more answers
As you know, a common example of a harmonic oscillator is a mass attached to a spring. In this problem, we will consider a horiz
Eddi Din [679]

a)E= U + K = \frac{1}{2}kx² +  \frac{1}{2}mv²

The total energy of the system at any point in the motion is equal to the sum of the elastic potential energy of the spring, U, and of the kinetic energy of the mass, K:

E= U + K = \frac{1}{2}kx² +  \frac{1}{2}mv²

where

'k' represents the spring constant

'x' is the compression/stretching of the spring with respect to its equilibrium position

'm' is the mass of the block attached to the spring

and 'v' is the speed of the block

b) <em>A=</em>\sqrt{\frac{2E}{k}}<em> </em>

The amplitude of the motion compares to the most extreme displacement of the mass-spring system. The displacement of the system, x(t), at time t, for a simple harmonic oscillator is given by,

x= Asin(ωt+∅)

where

amplitude  is 'A'

\omega=\sqrt{\frac{k}{m}} is the angular frequency of the motion

t is the time

\phi is the phase (we can take \phi=0 )

The amplitude of the motion occurs when the displacement of the motion is maximum: x=A. Regarding energy, the mass-spring system is at its maximum displacement (x=A) when all the mechanical energy of the framework is elastic potential energy, so when the kinetic energy is zero:

K=\frac{1}{2}mv^2=0

E=\frac{1}{2}kA^2\\ -->(1)

<em>A=</em>\sqrt{\frac{2E}{k}}<em> </em>

c)v_{max}=\omega A<u></u>

When the elastic potential energy is zero, the maximum speed of the system occurs i.e U=0 and the kinetic energy is maximum, so:

U=0

E=\frac{1}{2}mv_{max}^2

According to the law of conservation of the mechanical energy, this energy must be equal to the energy of the system at its maximum displacement (1), so we can write

\frac{1}{2}kA^2=\frac{1}{2}mv_{max}^2

and solving for v_{max}we find an expression for the maximum speed:

v_{max}=\sqrt{\frac{kA^2}{m}}=\sqrt{\frac{k}{m}}A=\omega A

<h2><u></u>v_{max}=\omega A<u></u></h2>
4 0
3 years ago
Because of the costs involved in maintaining high temperatures and pressure, nuclear method for generating electrical energy. is
erastova [34]

Answer:

c number is a answer boyyyyyy or girllllllll

5 0
3 years ago
Read 2 more answers
Other questions:
  • A 4.0 kg model rocket is launched, shooting 50.0 g of burned fuel from its exhaust at
    6·1 answer
  • Electrical current is directly proportional to which of the following quantities?
    10·1 answer
  • Would you rather be beautiful but you cant look at yourself or be ugly and no one else can see you
    12·1 answer
  • We consider a projectile motion against a linear drag force D = −b∗v, where v is the velocity
    5·1 answer
  • Which physical property refers to the temperature at which a substance in a solid-state transforms to a liquid state?
    9·2 answers
  • How do i figure this out ? Anyone help me please
    14·1 answer
  • A 1kg sphere rotates in a circular path of radius 0.2m from rest and it reaches an angular speed of 20rad/sec in 10 second calcu
    11·1 answer
  • Brainliest brainliest help help help mememememememme
    10·2 answers
  • Part C
    6·1 answer
  • A football player kicks a ball with the force of 50N. Find the impulse on the ball if his foot stays in contact with the footbal
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!