What is a role of helpful bacteria

Physics

1 answer:

DedPeter [7]3 years ago

7 0

Answer:

Explanation:

Hundreds of different species of "good" bacteria play a very important role in our health by processing fiber and producing certain vitamins, such as B vitamins, vitamin K, and other nutritive substances. The health-promoting bacteria are called probiotics and are normal inhabitants of the human gastrointestinal tract.

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An object accelerates at 5 m/s2, over a 3 second time period to a final velocity of 20 m/s. What is the initial velocity?

cricket20 [7]

Using kinematic equation, v =u +at, u= v-at = 20- 3x5 = 5m/s. Initial velocity = 5 m/s

8 0

3 years ago

Your electric drill rotates initially at 5.35 rad/s. You slide the speed control and cause the drill to undergo constant angular

Agata [3.3K]

Answer:

The angular displacement is $\theta = 29.6 \ rad$

Explanation:

From the question we are told that

The initial angular speed is $w = 5.35 \ rad/s$

The angular acceleration is $\alpha = 0.331 rad /s^2$

The time take is $t = 4.81 \ s$

Generally the angular displacement is mathematically represented as

$\theta = w * t + \frac{1}{2} \alpha * t^2$

substituting values

$\theta = 5.35 * 4.81 + \frac{1}{2} * 0.331 * (4.81)^2$

$\theta = 29.6 \ rad$

3 0

3 years ago

Which is an example of current electricity

Reil [10]

Answer:

A or B you choose

Explanation:

This is called current electricity or an electric current. A lightning bolt is one example of an electric current, although it does not last very long. Electric currents are also involved in powering all the electrical appliances that you use, from washing machines to flashlights and from telephones to MP3 players.

what is an electrical current, amp, ampere Current is the flow of electrons. When a circuit is closed then a current of electrons can flow and when a circuit is open then no current can flow. We can measure the flow of electrons just like you can measure the flow of water through a pipe.

4 0

3 years ago

Read 2 more answers

A fire hose held near the ground shoots water at a speed of 6.8 m/s. At what angle(s) should the nozzle point in order that the

Vesna [10]

So, based on the angle values that have been found, the angle of elevation of the nozzle can be <u>16° or 74°</u>.

<h3>Introduction</h3>

Hi ! This question can be solved using the principle of parabolic motion. Remember ! When the object is moving parabolic, the object has two points, namely the highest point (where the resultant velocity is 0 m/s in a very short time) and the farthest point (has the resultant velocity equal to the initial velocity). At the farthest distance, the object will move with the following equation :

$\boxed{\sf{\bold{x_{max} = \frac{(v_0)^2 \cdot \sin(2 \theta)}{g}}}}$