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eduard
3 years ago
10

PLEASE HELP ME!!BRAINLIEST!!Biotechnology has helped produce crops that are resistant to certain pests, crops that produce high

yields, and more nitrogen-efficient crops. What is a negative impact that bioengineered plants may have on the environment?
A) Beneficial insects may be adversely affected.
B) Plants have an increased resistance to insect pests.
C) There is an increased need for inorganic fertilizers.
D) Genetically engineered plants may have a longer shelf life.
Physics
1 answer:
AysviL [449]3 years ago
5 0
A) Beneficial insects (e.g a bee) may be adversely affected
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A gymnast is in a tucked position to complete her somersaults. While tucked her moment of inertia about an axis through the cent
torisob [31]

Answer:

\omega_s=12.8886\ rad.s^{-1}

Explanation:

Given that:

  • moment of inertia of tucked body, I_t=16\ kg.m^2
  • rotational speed of the body, N_t=2.5\ rev.s^{-1}
  • i.e. \omega_t=2\pi\times 2.5=15.708\ rad.s^{-1}
  • moment of inertia of  the straightened body, I_s=19.5\ kg.m^2

<u>Now using the law of conservation of angular momentum:</u>

angular momentum of tucked body=angular momentum of straight body

I_t.\omega_t=I_s.\omega_s

16\times 15.708=19.5\times \omega_s

\omega_s=12.8886\ rad.s^{-1}

8 0
3 years ago
An 1,840 W toaster, a 1,380 W electric frying pan, and a 70 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (T
Pavlova-9 [17]

Answer with Explanation:

We are given that

Power of toaster=P_1=1840 W

Power of electric frying pan=P_2=1380 W

Power of lamp=P_3=70 W

Current in circuit=15 A

Potential difference= V=120 V

We know that

Current=\frac{P}{V}

Using the formula

Current drawn by toaster=I_1=\frac{1840}{120}=15.3 A

Current drawn by electric frying pan=I_2=\frac{1380}{120}=11.5 A

Current drawn by lamp=I_3=\frac{70}{120}=0.58 A

5 0
3 years ago
The ________ method is duct sizing that considers the each duct section has the same air velocity.
Gennadij [26K]

The equal velocity approach for duct size assumes that the air velocity in each duct segment is the same.

How fast is the air moving through a duct?

The most common unit of air velocity (distance traveled in a unit of time) is feet per minute (FPM). The amount of air passing past a location in the duct per period of time may be calculated by multiplying the airflow by the area of the duct. The standard unit for volume flow is cubic feet per minute (CFM).

What happens when the size of ducts changes to the airflow?

  • Result for an image The equal velocity technique for duct size makes the assumption that air velocity is constant across the entire duct system.
  • The main lesson to be learned from this is that when air goes from a bigger to a narrower duct, its velocity rises. The velocity drops when it transitions from a shorter to a bigger duct. The flow rate or the amount of air passing through the duct in cubic feet per minute is the same in all scenarios.

Learn more about air velocity here:

brainly.com/question/3255148

#SPJ4

5 0
2 years ago
Hii guys!! ~ i've comeback again!! could you please help me with an assignment?? i have a couple of i know questions!! thank you
Nimfa-mama [501]

Answer:

Speed = 10.24 m/s.

Explanation:

<u>Given the following data;</u>

Distance = 100m

Time = 9.77

To find her speed;

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

Speed = \frac{distance}{time}

Substituting into the equation, we have;

Speed = \frac{100}{9.77}

<em>Speed = 10.24 meter per seconds. </em>

5 0
3 years ago
T/F if you were conducting this study, what other questions would you want to ask to ensure both the external and internal valid
ryzh [129]

whether or whether the conclusions apply to people whose location and circumstances differ from those of the study's participants need to asked to ensure both the external and internal validity of your results

<h3>How can external validity be guaranteed?</h3>

Broad inclusion criteria that produce a study group that more closely mimics real-life patients and, in the case of clinical trials, selecting interventions that are practical to implement can both boost external validity.

<h3>What steps would you take to make sure your study is reliable and valid?</h3>

The development of a solid study design, the selection of suitable methodologies and samples, and the meticulous and consistent execution of the research are all necessary for the reliability and validity of your findings.

Learn more about external validity here:

brainly.com/question/9292757

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5 0
1 year ago
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