All categories

2 years ago

Help plssssss would be highly appreciate ❤️❤️

Physics

2 answers:

victus00 [196]2 years ago

7 0

Answer:

Explanation:

anastassius [24]2 years ago

4 0

Answer:

I beleive B because its on land and the tecnotic plates are moving opposite directions pulling the ground into a tear like hole

Explanation:

what happen when you take two sides of something and pull opposite directions right it tears the same will happen to the groung.

You might be interested in

What is the suitable condition for the superconductivity and high resista (a) Weak phonon-phonon interactions (b) No interaction

Readme [11.4K]

Answer:

(d) A strong electron-phonon interaction

Explanation:

Superconductivity -

The phenomenon of superconductivity is due to the attractive force between electrons from the exchange of the phonons that cause the bound pair of electrons known as cooper pairs .

A strong electron -phonon intercation is suitable condition for superconductivity and high resistance .

4 0

3 years ago

A metal cylinder with a mass of 4.20 kg is attached to a spring and is able to oscillate horizontally with negligible friction.

kherson [118]

Answer:

a) k = 120 N / m

, b) f = 0.851 Hz

, c) v = 1,069 m / s

, d) x = 0

, e) a = 5.71 m / s²

, f) x = 0.200 m

, g) Em = 2.4 J

, h) v = -1.01 m / s

Explanation:

a) Hooke's law is

F = k x

k = F / x

k = 24.0 / 0.200

k = 120 N / m

b) the angular velocity of the simple harmonic movement is

w = √ k / m

w = √ (120 / 4.2)

w = 5,345 rad / s

Angular velocity and frequency are related.

w = 2π f

f = w / 2π

f = 5.345 / 2π

f = 0.851 Hz

c) the equation that describes the movement is

x = A cos (wt + Ф)

As the body is released without initial velocity, Ф = 0

x = 0.2 cos wt

Speed is

v = dx / dt

v = -A w sin wt

The speed is maximum for sin wt = ±1

v = A w

v = 0.200 5.345

v = 1,069 m / s

d) when the function sin wt = -1 the function cos wt = 0, whereby the position for maximum speed is

x = A cos wt = 0

x = 0

e) the acceleration is

a = d²x / dt² = dv / dt

a = - Aw² cos wt

The acceleration is maximum when cos wt = ± 1

a = A w²

a = 0.2 5.345

a = 5.71 m / s²

f) the position for this acceleration is

x = A cos wt

x = A

x = 0.200 m

g) Mechanical energy is

Em = ½ k A²

Em = ½ 120 0.2²

Em = 2.4 J

h) the position is

x = 1/3 A

Let's calculate the time to reach this point

x = A cos wt

1/3 A = A cos 5.345t

t = 1 / w cos⁻¹(1/3)

The angles are in radians

t = 1.23 / 5,345

t = 0.2301 s

Speed is

v = -A w sin wt

v = -0.2 5.345 sin (5.345 0.2301)

v = -1.01 m / s

i) acceleration

a = -A w² sin wt

a = - 0.2 5.345² cos (5.345 0.2301)

a = -1.91 m / s²

5 0

3 years ago

a hunter on level ground fires a bullet perfectly level with the ground. at the same time the bullet leaves the gun, he drops an

padilas [110]

Mark brainliest and I will help you

5 0

2 years ago

A simple pendulum is used to determine the acceleration due to gravity at the surface of a planet. The pendulum has a length of

Dafna1 [17]

Answer:

- pendulum use to determine acceleration

Explanation:

by calculating need to understand first the problem

the length is measure to be 2s

the lenght is also 2

2 obtainer on invistigation the most nearly is 8.

5 0

2 years ago

Basic explanation of the scientific method

igomit [66]

There is a a thing. so you use the scientific method by
The observation, measuring, and the experiment. also the formulation and then testing of your hypothesis

5 0

3 years ago