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Makovka662 [10]
4 years ago
6

1. A car with a mass of 2500 kg accelerates when the traffic light turns green. If the net force

Physics
1 answer:
soldier1979 [14.2K]4 years ago
5 0

;Net force = mass of the body × acceleration of the body due to the net force

; 5000 = 2500 a...then divide both sides by 2500

; acceleration(a) = 2 m/s^2

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Mosses don't spread by dispersing seeds; they disperse tiny spores. The spores are so small that they will stay aloft and move w
jolli1 [7]

Answer:

Em_{f} / Em₀ = 0.30

Explanation:

In this exercise we use the relationship of mechanical energy, kinetic energy and gravitational potential energy

      K = ½ m v²

      U = mgh

We calculate the mechanical energy at two points

Initial. Lower

    Em₀ = K = ½ m v²

Highest finish

    Em_{f}= U = mg and

Let's calculate

    Em₀ = ½ m 3.6 2

    Em₀ = m 6.48

    Em_{f} = m 9.8 0.20

    Em_{f}= m 1.96

The fraction of lost energy is

    Em_{f} / Em₀ = m 1.96 / m 6.48

   Em_{f} / Em₀ = 0.30

30% sun is converted into potential energy

It has several transformation possibilities

It is transformed into thermal energy of air and spores, since this energy cannot be recovered

8 0
3 years ago
Question 4 What would be the UCS for Tab the dog? O The shock O The flowers and fence O Fear O The boundary Question 5​
Harrizon [31]

The unconditioned stimulus (UCS) for Tab the dog is: B. The flowers and fence.

<h3>The types of stimuli.</h3>

In Science, the two (2) stimuli that are repeatedly paired in classical conditioning include:

  • Conditioned stimulus
  • Unconditioned stimulus

<h3>What is an unconditioned stimulus?</h3>

An unconditioned stimulus can be defined as a stimulus that is capable of naturally triggering a response, before or without any conditioning while it elicit a specific response without learning.

  • This ultimately implies that, an unconditioned stimulus leads to an automatic response in a living organism such as a dog.

In this scenario, the unconditioned stimulus (UCS) for Tab the dog is simply the flowers and fence.

Read more on unconditioned stimulus here: brainly.com/question/24868138

3 0
2 years ago
What is the reaction force of the table with a weight of 558N
Delicious77 [7]

Answer: reaction force = -558N

Explanation:

w = f = 558N

since action force and reaction force are equal in magnitude and opposite in direction,

reaction force = -(f)

reaction force = -558N

if that helps.

8 0
3 years ago
The period of a 400 hertz sound wave is ___ second
Oksi-84 [34.3K]

Answer:

0.0025 sec

Explanation:

Period = 1 / frequency = 1/400 = 0.0025 sec

3 0
2 years ago
Read 2 more answers
Force (f) = ?<br> mass (m) = 75kg<br> gravity (g) = 9.8m/s^2
Sloan [31]

Answer:

735 N

Explanation:

5 0
3 years ago
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