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Serggg [28]
3 years ago
11

Which word best replaces dog in the sentence? plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

sssssssssssssssssssssssssssssssssss i give brainlist
SAT
1 answer:
Hitman42 [59]3 years ago
7 0
Puppy? Pet? ( sorry I’m not sure :/ )
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Two small metal cubes with masses 2. 0 g and 4. 0 g are tied together by a 5. 0-cm-long massless string and are at rest on a fri
Aleks04 [339]

The energy of the system, tension in the string, and speed of each cube are respectively; U = 0.72 J, T = 14 N and (V₂, V₄) = (-22, 14)

<h3>Calculation of energy and tension in a String</h3>

We are given;

Mass of cube 1; m₁ = 2 g

Mass of cube 2; m₂ = 4 g

Distance between cubes; d = 5 cm = 0.05 m

Charges of cubes; Q = q = +2. 0 μc = 2.0 × 10⁻⁶ C

A) Formula for the energy of the system is;

U = kQq/d

U = 8.99 × 10⁹ × (2.0 × 10⁻⁶ C)²/0.05 m

U = 0.03596/0.05

U = 0.72 J

B) Formula for the Tension is;

T = U/d

T = 0.72/0.05

T ≈ 14 N

C) Momentum is conserved, and as such the initial momentum is zero. Thus;

0 = (0.0020 × V₂) + (0.0040 × V₄)

⇒ V₂ = -2V₄

Energy is also conserved and so;

(½ × 0.0020 × (-2V₄)²) + (½ × 0.004 × (V₄)²) = 0.72 J

-0.0040V₄² + 0.002V₄² = 0.72 J

0.0060V₄² = 0.72 J

V₄² = 0.72/0.0060

V₄² = 120

V₄ = √120

V₄ ≈ 11 m/s

Recall that; V₂ = -2V₄

Thus;

V₂ = -2(11) m/s

V₂ = -22 m/s

Thus;

(V₂, V₄) = (-22, 14)

Read more about Conservation of Momentum at; brainly.com/question/7538238

8 0
3 years ago
Describe the characteristics of soil in high-resource environments
vampirchik [111]

Answer:

There are many characteristics of soils through multiple high-resource environments including:

ECOSYSTEM SERVICES

Soil is the link between the air, water, rocks, and organisms, and is responsible for many different functions in the natural world that we call ecosystem services. These soil functions include: air quality and composition, temperature regulation, carbon and nutrient cycling, water cycling and quality, natural "waste" (decomposition) treatment and recycling, and habitat for most living things and their food. We could not survive without these soil functions.

Habitat

Soils are the environment in which seeds grow. They provide heat, nutrients, and water that are available for use to nuture plants to maturity. These plants form together with other plants and organisms to create ecosystems. Ecosystems depend on the soil, and soils can help determine where ecosystems are located (check out the Around the World Page for more examples.) These plants then provide valuable habitat and food sources for animals, bacteria, and other things.

Air Quality and Composition

A well covered soil prevents erosion. During times like the great Dust Bowl, wind blows across soils, and suspended them in the air. These are easily inhaled and accumulate in lung tissues causing major respiratory problems. These particles can contain fungi and bacteria, which can cause infection and diseases. They are also important in military operations.

Dust can hide entire armies and tanks in large clouds. Approaching the enemy is much easier when entire armies are hidden in the dust, but all following vehicles tend to be blinded by dust. In dry regions, dust can also alert of an approaching enemy.  In very dry regions, every time a weapon is fired, it sends out a cloud of dust, and it is difficult to see if the target is hit. Tank engine’s life spans fell from an average of 7500 kilometers to 3500 kilometers in the desert; most of this is due to the damage that suspended sediment causes. In military operations in the desert, take off formations are messed up by high concentrations of dust.

- Credits to soils4teachers.

4 0
3 years ago
If it were possible to remove gravity and friction, think about what would happen to a football if it were tossed into the air.
GrogVix [38]

Answer:

The Correct Answer Would Be No force is needed

Explanation:

an object in motion stays in motion.

<u>Newton's first law of motion</u> - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

8 0
3 years ago
a person who is working part-time when full-time work is desired is known as __________. a. an employee b. unemployed c. the non
Mazyrski [523]

Answer:

the answer is D

Explanation:

i got it right on the practice test

sry for being late

3 0
3 years ago
Read 2 more answers
Okok here they are I'm not sure if they're good enough? but if you need me to find more just l.mk
Lady bird [3.3K]

Answer:

HSLAKJFDKASJL TYSM

Explanation:

LOVE U

4 0
3 years ago
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