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lions [1.4K]
3 years ago
15

Mary and Jim find an unusual rock in their backyard. Which question about the rock cannot be answered through scientific investi

gation
1. How old is the rock
2.What minerals make up the rock
3.Is it the most unusual rock in the area
4.Is it the heaviest rock in the backyard
Physics
2 answers:
zysi [14]3 years ago
9 0

Answer:

correct answer is 3(Is it the most unusual rock in the area)

Explanation:

Option 1:

During the formation of a rock some quantity of radioactive elements mixed with it. By measuring the quantity of this radioactive element scientist can determine the age of the rock which is known as absolute age.

option 2:

Throgh scientific investigation scientist can determine the types of minerals which make up the rock

option 3:

Through scientific investigation scientist cannot determine whether the rock is the most unusual or not. It can be determine by just looking all the rock in the area.

Option 4

Through scientific investigation the weight of the rock can be determine and it can be determine whether it is the heaviest rock in the backyard.

Alinara [238K]3 years ago
7 0

Answer:

1.How old is the rock

Explanation:

Lol because I did the test.

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dmitriy555 [2]

Answer:

Options A, B, and C are all possible.

Explanation:

We know that the instantaneous velocity of the dog at 3:14PM is possitive to toward the flowers. But what about the acceleration to toward the flowers?

If the dog is decreasing speed at 3:14PM, it means that acceleration is negative toward the flowers, hence (since F=ma) the net force points away from the flowers.

If the dog is increasing speed at 3:14PM, it means that acceleration is positive toward the flowers, hence (since F=ma) the net force points toward the flowers.

If the dog is not increasing nor decreasing speed at 3:14PM, it means that acceleration is 0, hence (since F=ma) the net force is null and it does not point neighter to toward the flowers  nor away from the flowers. This happens when the forces acting on the dog are equal to both sides.

4 0
3 years ago
Energy in an ecosystem's energy pyramid always flows from __________.
Anna11 [10]

The Answer is B because primary consumers need to get their food from plants.

5 0
3 years ago
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Correctly round the following number to the ten thousandths place<br> 3.68274
Sergeu [11.5K]
The answer to this question is 3.69
5 0
3 years ago
When NASA was communicating with astronauts on the Moon, the time from sending on the Earth to receiving on the moon was 1.33 s.
frez [133]

To solve this problem it is necessary to apply the concepts related to the kinematic equations of movement description, which determine the velocity, such as the displacement of a particle as a function of time, that is to say

v = \frac{x}{t}\rightarrow x = v*t

Where,

x = Displacement

v = Velocity

t = Time

Our values are given as,

v=3*10^8m/s

t = 1.33 s

Replacing we have that,

x=v*t

x=(3*10^8)(1.33)

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What is the likely identity of a metal if a sample has a mass of 63.5 g when measured in air and an apparent mass of 60.2 g when
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Answer:

Gold

Explanation:

Given:

Mass of sample = 63.5 g

Mass of water = 60.2 g

Find:

Object

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So,

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7 0
2 years ago
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