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4 years ago

Compare all the organisms. What trend do you see?

Physics

2 answers:

kotegsom [21]4 years ago

7 0

Answer: C.) The proportions of DNA bases are similar among all organisms.

DNA that is deoxyribonucleic acid is the building block of chromosomes or life. The DNA is made up of 4 nucleotide that are adenine (A), cytosine (C), guanine (G) and thymine (T). The proportion of the DNA bases are similar among all organisms irrespective of being a plant or animal.

Digiron [165]4 years ago

5 0

When you compare all organisms around us, even the smallest ones, you see that they have Life; You could even see this as a trend of some sort.

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A toy car is moving across a table with a velocity of 7.0 m/s and drives off the end. The table is 1.8 m tall. How long will the

KatRina [158]

Answer:

Option D - 0.2 s

Explanation:

We are given;

Initial velocity; u = 7 m/s

Height of table; h = 1.8m

Now,since we want to find the time the car spent in the air, we will simply use one of Newton's equation of motion.

Thus;

h = ut + ½gt²

Plugging in the relevant values, we have;

1.8 = 7t + ½(9.8)t²

4.9t² + 7t - 1.8 = 0

Using quadratic formula to find the roots of the equation gives us;

t = -1.65 or 0.22

We can't have negative t value, thus we will pick the positive one.

So, t = 0.22 s

This is approximately 0.2 s

7 0

4 years ago

When two atoms of the same nonmetal react, they often form a(an) A. ionic bond. B. polyatomic ion. C. diatomic molecule. D. pola

Mariana [72]

<span>When two atoms of the same nonmetal react,they form what we know today as a diatomic molecule.</span>

5 0

3 years ago

Read 2 more answers

A heat engine does 300 J of work during one cycle. In this cycle 900 J of energy is wasted.

andreyandreev [35.5K]

B, because 300 is 1/3 of 900

7 0

3 years ago

Read 2 more answers

1. Vector B is multiplied by the scalar 921.5. What angle does the new vector make with the x-axis?

adelina 88 [10]

1. Is 49.5
2. Is 8.6
4. Is 6.6
Wait I’m not sure

6 0

3 years ago

Read 2 more answers

A kangaroo can jump over an object 2.46 m high. (a) Calculate its vertical speed (in m/s) when it leaves the ground.

Elenna [48]

Answer:

a) 6.95 m/s

b) 1.42 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

$v^2-u^2=2as\\\Rightarrow -u^2=2as-v^2\\\Rightarrow -u^2=2\times -9.81\times 2.46-0^2\\\Rightarrow u=\sqrt{2\times 9.81\times 2.46}\\\Rightarrow u=6.95\ m/s$

a) The vertical speed when it leaves the ground. is 6.95 m/s

$v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{0-6.95}{-9.81}\\\Rightarrow t=0.71\ s$

Time taken to reach the maximum height is 0.71 seconds

$s=ut+\frac{1}{2}at^2\\\Rightarrow 2.46=0t+\frac{1}{2}\times 9.81\times t^2\\\Rightarrow t=\sqrt{\frac{2.46\times 2}{9.81}}\\\Rightarrow t=0.71\ s$

Time taken to reach the ground from the maximum height is 0.71 seconds

b) Time it stayed in the air is 0.71+0.71 = 1.42 seconds

3 0

3 years ago