All categories

3 years ago

How does the matter and energy in a system naturally change over time?

1 answer:

3 0

If there is no input to the system and no leaks from it, then the matter and energy in the system naturally does not change over time

You might be interested in

A charge of 12 passes through the filament of a car head lamp bulb in 4 s. what is current?

Katena32 [7]

Answer:

3 A

Explanation:

$current = \frac{charge}{time} \\ = \frac{12}{4} \\ = 3 \: amperes$

3 0

3 years ago

When a bike goes around a curve at the same speed as it was moving on a staright road, it has uniform motion is this true or fal

Zinaida [17]

False probably I think

8 0

3 years ago

Read 2 more answers

Waves of wavelength 24 cm and amplitude 3.0 em are used to create a standing wave. The distance from one node tothe next in the

NikAS [45]

Answer:

D. 12 cm

Explanation:

A node is a point on a standing wave that does not vibrate.

The nodes of a standing wave are shown in the following sketch.

The red dots are the nodes of the standing wave.

It is observed that the distance between two adjacent nodes is half the wavelength of the wave.

Therefore, if the wavelength of the wave is 24 cm, then the distance from one node to the net must be 24 / 2 = 12 cm.

Hence, choice D is the correct answer.

7 0

1 year ago

What is Angular acceleration, please explain this concept. Give any equations that involve angular acceleration and explain them

Eva8 [605]

Answer:

Angular acceleration is defined as the rate of change of angular velocity of a body.

consider the attached figure as shown

It rotates with an angular velocity $\omega$

An point inside the object rotates along the path as indicated thus turning by an angle $\theta$ in time 't'

Thus we have

$\alpha =\frac{d\omega }{dt}\\\\=\frac{d}{dt}(\frac{d\theta }{dt})\\\\\therefore \alpha =\frac{d^{2}\theta }{dt^{2}}$

physically angular acceleration can be understood as the rate at which the angular speed of any object is changing with time.

8 0

3 years ago

What three farming methods increase the rate of soil erosion?

dimaraw [331]

<span>
planting the same crops consistently without roations, over irrigating to the point where it is streams of water instead of farm lanf and deep plowing that exposes the delicate soil to the air resistance causing it to harden </span>

5 0

3 years ago