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3 years ago

Does current flow through the CD wire???

Physics

1 answer:

ivann1987 [24]3 years ago

6 0

Answer:

Yes

Hope it's helpful to you

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Something has a mass of 40 kg and a velocity of 1 m/s

lesantik [10]

m=40kg
v=1m/s

$\\ \sf\Rrightarrow K.E=\dfrac{1}{2}mv^2$

$\\ \sf\Rrightarrow K.E=\dfrac{1}{2}(40)(1)^2$

$\\ \sf\Rrightarrow K.E=20J$

m=80kg

$\\ \sf\Rrightarrow K.E=\dfrac{1}{2}(80)(1)^2$

$\\ \sf\Rrightarrow K.E=40J$

6 0

3 years ago

Calculate the force, when a object acelerattes to 30 m/s^2 and have a mass of 40 kg

faust18 [17]

Hello!

Use the <u>second law of Newton:</u>

F = ma

Replacing:

F = 40 kg * 30 m/s^2

Resolving:

F = 1200 N

The force is <u>1200 Newtons.</u>

3 0

3 years ago

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You throw a ball with a speed of 25.0 m/s at an angle of 40.0â—¦ above the horizontal directly toward a wall. The wall is 22.0 m

Alina [70]

The ball takes about 1.15 seconds to reach the wall

<h3>Further explanation</h3>

Acceleration is rate of change of velocity.

$\large {\boxed {a = \frac{v - u}{t} } }$

$\large {\boxed {d = \frac{v + u}{2}~t } }$

<em>a = acceleration ( m/s² )</em>

<em>v = final velocity ( m/s )</em>

<em>u = initial velocity ( m/s )</em>

<em>t = time taken ( s )</em>

<em>d = distance ( m )</em>

Let us now tackle the problem!

This problem is about Projectile Motion

<u>Given:</u>

initial speed = u = 25 m/s

angle of speed = θ = 40.0°

horizontal distance = x = 22.0 m

<u>Unknown:</u>

time taken by the ball = t = ?

<u>Solution:</u>

<em>We will use this following formula to find the time taken by the ball to reach the wall:</em>

$x = u_x t$

$x = u \cos \theta ~t$

$22 = 25 \cos 40^o ~t$

$t = 22 \div ( 25 \cos 40^o )$

$t \approx 1.15 \texttt { seconds}$

$\texttt{ }$

<h2>Conclusion :</h2>

The ball takes about 1.15 seconds to reach the wall

$\texttt{ }$

<h3>Learn more</h3>

Velocity of Runner : brainly.com/question/3813437
Kinetic Energy : brainly.com/question/692781
Acceleration : brainly.com/question/2283922
The Speed of Car : brainly.com/question/568302

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Projectile , Motion , Horizontal , Vertical , Release , Point , Ball , Wall

7 0

3 years ago

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Our solar system is situated within the arm of the Milky Way<br> galaxy.<br> TRUE<br> FALSE

Marizza181 [45]

Answer:

FALSE!!!!

Explanation:

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3 years ago

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List five objects in your daily life that produce sounds with a high pitch and five that produce sounds with a low pitch.

drek231 [11]

Answer:

Explanation:

High pitch:

-birds chirping

-nails on a chalkboard

-flies buzzing

-children squealing

-whistle

Low pitch:

-thunder

-dogs barking

- earthquakes

- bass drum,

-cannon shot,

8 0

3 years ago

Does current flow through the CD wire???​

Does current flow through the CD wire???