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iVinArrow [24]
3 years ago
7

Color blindness is a sex-linked, trait.

Physics
2 answers:
gayaneshka [121]3 years ago
4 0

Answer:

Yes.

Explanation:

lesya [120]3 years ago
3 0

Answer:

I think yeah

Explanation:

  1. ansnnsshsjxjxk
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(5) A 4 kg. object rests on a flat, horizontal surface with a static
baherus [9]

Answer:

F = 9.81 [N]

Explanation:

To solve this problem we must use Newton's third le which tells us that the sum of forces on a body that remains static must be equal to one resulting from these forces in the opposite direction.

Let's perform a summation of forces on the vertical axis-y to determine the normal force N.

∑F = 0 (axis-y)

N - m*g = 0

where:

m = mass = 4 [kg]

g = gravity acceleration = 9.81 [m/s²]

N - (4*9.81)=0\\N = 39.24 [N]

Now we know that the frictional force can be calculated using the following equation.

f = μ*N

where:

f = friction force [N]

μ = friction coefficient = 0.25

N = normal force = 39.24 [N]

Now replacing:

f = 0.25*39.24\\f = 9.81[N]

Then we perform a sum of forces on the X-axis equal to zero. This sum of forces allows us to determine the minimum force to be able to move the object in a horizontal direction.

∑F = 0 (axis-x)

F-f=0\\F-9.81=0\\F= 9.81[N]

If the coefficient was smaller, a smaller force (F) would be needed to start the movement, this can be easily seen by replacing the value of 0.25, by smaller values, such as 0.1 or 0.05.

If the coefficient were larger, a larger force would be needed.

3 0
3 years ago
На рисунке изображено преломление луча света на границе двух сред. Какая среда оптически более плотная?
Svet_ta [14]

Which language is this.. pls type in English... so I can answer

5 0
3 years ago
Read 2 more answers
A child aims his air rifle at an angle of 10 degrees above the horizontal. he fires a bb while simultaneously dropping another b
Gwar [14]

Answer:

The b-b at rest will hit the ground first

Explanation:

When the first b-b is shot at angle it will first experience some horizontal force of air resistance before it experience another vertical force of resistance when going done while the second b-b only experiences the vertical force of resistance making reach the ground faster.

6 0
4 years ago
If a substance cannot be physically separated into component parts, it is likely to be
LiRa [457]

A pure substance because it cannot be separated into parts

8 0
4 years ago
Which explanation describes the forces involved for a person to walk down the sidewalk?
Svet_ta [14]

The person walking down the sidewalk follows the newton's third law of motion.

Explanation:

  • A person is able to walk down the sidewalk by using the reaction forces from the ground.
  • In simple term, feet pushes the ground and the reaction forces makes the feet able to walk.
  • Another important force included in the walking mechanism is friction. With out friction one cannot walk down the sidewalks.
  • Hence the forces involved in the walking of a person down the sidewalk are:
  1. Friction force
  2. Action and reaction force between ground and person's feet.
4 0
3 years ago
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