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ANEK [815]
3 years ago
6

Tera performed multiple experiments to determine the best growing conditions for Azaleas. In one experiment, she tested the effe

ct of using different types of soil. In another experiment, she tested the effect of exposing the plants to varying amounts of light. And, in another experiment, she tested the use of different amounts of fertilizer. Once she completed her experiments, Tera recorded all of her observations before making a conclusion.
This scenario suggests that

A.scientific questions are often solved by performing a single experiment
B.scientific hypotheses should be made after reaching a conclusion.
C.scientific evidence includes observations, data, and personal opinions
D.scientific explanations are based on evidence, or data.


I think its D
Physics
2 answers:
Ira Lisetskai [31]3 years ago
8 0
The answer should be D. Ur right
Talja [164]3 years ago
8 0

Answer:

Option D. The scenario suggests that scientific explanations are based on evidence, or data.

Explanation:

Before making a conclussion or giving an explanation on the experiment made, Tera performs mutiple experiments with different variables and then records all of the obserations made during the experiments, to be able to make a conclussion. This suggests that scientific explanations come as a result of evidence or data, as Tera's recorded observations will show.

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Please hurry Describe why electric currents can be dangerous
konstantin123 [22]

Answer:

Cardiac Arrest, burns, and nerve damage.

Explanation:

Basically, the main risk is cardiac arrest, caused by the electric current interfering with the normal operation of the heart muscle. Other possible damages are burns due to the electric energy vaporizing the water inside the cells, and nerve damage caused by excessive current through the nerves.

7 0
3 years ago
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.75 104 m/s, and the radius of the or
Arisa [49]

Answer:

v = 1.32 10² m

Explanation:

In this case we are going to use the universal gravitation equation and Newton's second law

    F = G m M / r²

    F = m a

In this case the acceleration is centripetal

    a = v² / r

The force is given by the gravitational force

    G m M / r² = m v² / r

    G  M/r =  v²

Let's calculate the mass of the planet

    M = v² r / G

    M = (1.75 10⁴)² 5.00 10⁶ / 6.67 10⁻¹¹

    M = 2.30 10²¹ kg

With this die we clear the equation to find the orbit of the second satellite

    v = √ G M / r

    v = √ (6.67 10⁻¹¹ 2.30 10²¹ / 8.75 10⁶)

    v = 1.32 10² m

8 0
3 years ago
Sunitha can type 1800 words in half an hour. What is her typing speed in words per minute?
Andre45 [30]

Answer:

60words/minute

Explanation:

If Sunitha can type 1800 words in half an hour, this can be expressed as;

1800 words = 30 minutes

To get her typing speed per minute, we will use the formula

Speed = Number of words/Time used

Typing speed = 1800/30

Typing speed = 60words/minute

Hence her typing speed in words per minute is 60words/minute

6 0
3 years ago
If a fuse melts, does it create an open circuit, a closed circuit, or a short circuit?
Andrew [12]

Answer:

short circuit

7 0
3 years ago
Read 2 more answers
Ask Your Teacher Cam Newton of the Carolina Panthers throws a perfect football spiral at 6.9 rev/s. The radius of a pro football
faltersainse [42]

Answer:

a=159.32\ m/s^2

Explanation:

It is given that,

Angular speed of the football spiral, \omega=6.9\ rev/s=43.35\ rad/s

Radius of a pro football, r = 8.5 cm = 0.085 m

The velocity is given by :

v=r\omega

v=0.085\times 43.35

v = 3.68 m/s

The centripetal acceleration is given by :

a=\dfrac{v^2}{r}

a=\dfrac{(3.68)^2}{0.085}

a=159.32\ m/s^2

So, the centripetal acceleration of the laces on the football is 159.32\ m/s^2. Hence, this is the required solution.

6 0
3 years ago
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