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3 years ago

SCIENCE QUESTION

Biology

2 answers:

lesya [120]3 years ago

7 0

Answer:

Yes, Terrestrial Planet.

Explanation:

Terrestrial means, of, on, or relating to the Earth.

vampirchik [111]3 years ago

4 0

Terrestrial planet.
Terrestrial brings like us and animals live whereas as others don't satisfy any life.

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A planet has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m. Find the weight of a 65.0 kg person at 1000 km above the sur

mote1985 [20]

Answer: The weight of the person above the surface of a planet is 635.83N.

Explanation:

To calculate the weight of a person, we use the formula:

$w=mg$ ....(1)

where,

w = weight of an object

m = mass of the person = 65kg

g = acceleration due to the gravity of the planet

For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:

$g=\frac{GM}{r^2}$

where, g = acceleration due to gravity = $?m/s^2$

G = Universal gravitational constant = $6.67\times 10^{-11}Nm^2/kg^2$

M = mass of the planet = $5.97\times 10^{24}kg$

r = distance of the person from the planet = $6.38\times 10^6m$

Putting values in above equation, we get:

$g=\frac{(6.67\times 10^{-11}kgm/s^2.m^2/kg^2)(5.97\times 10^{24}kg)}{(6.38\times 10^6m)^2}\\\\g=9.782m/s^2$

Putting this value in equation 1, we get:

$w=65kg\times 9.782m/s^2=635.83N$

Hence, the weight of the person above the surface of a planet is 635.83N.

7 0

3 years ago

Muscle contraction occurs due to a series of specific steps that take place within the body. Which of the following steps does n

Burka [1]

Answer:

Actin filaments return to their original positions (does not occur in muscle contraction, according to the sliding filament model).

Explanation:

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3 years ago

"A technician is reading the plates from a sputum culture. On the sheep blood agar (SBA), she sees flat spreading colonies with

sleet_krkn [62]

Answer:

P. aeruginosa

Explanation:

P. aeruginosa is a gram-negative bacteria that belongs to the family Pseudomonadaceae.

From the given question the following points lead us to conclude that the colony that will be growing would be of P. aeruginosa :

1. Flat spreading colonies with a metallic sheen on SBA - P. aeruginosa is known to produce smooth colonies with flat edges.

2. Fluorescent green color in the media with clear colonies on cetrimide agar - P. aeruginosa is known to produce pyoverdin which is a fluorescent pigment under low iron conditions.

3. Medium clear colonies that have a "fruity or grape-like odor" on MacConkey Agar - P. aeruginosa has a sweet fruity odor which is its characteristic odor because of the production of trimethylamine.

Thus, from all these characteristics one can conclude that the organism in the culture is P. aeruginosa.

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3 years ago

True or False? Theoretically an object would keep going forever on a friction-less surface if it was given a hard-enough push to

WINSTONCH [101]

True. if there is no friction or wind resistance then the object could keep going because nothing would be there to slow it down

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3 years ago

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Find the exact length of the third side. 3 3 5 12

Blababa [14]

Answer:

Explanation:

The Pythagorean Theorem Calculator is used to calculate the length of the third side of a right-angled triangle based on the other two sides using the Pythagorean theorem.

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