What is x 40{ 4 x 5+ x =? pls help

The girl in the picture is at the highest point in swinging and starts to come down. Which statement best describes the changes

SpyIntel [72]

When she descends the potential energy will decrease at the same rate that the kinetic energy increases.

<h3></h3><h3>How to describe changes in energy?</h3>

We know that we can write the total energy of a moving object as:

E = U + K

Where U is the potential energy and K is the kinetic energy.

In the given case, U will only depend on the height of the girl and it will be maximized when the height is maximum.

K = (1/2)*m*v^2

where m is the mass and v is the velocity.

When the girl is at the highest point, the velocity becomes equal to zero. This happens because at that point she stops going up and starts going down, so the velocity must be zero at that moment.

Then we have K = 0.

E = U.

As she starts going down, the velocity starts increasing and the height decreases, thus, the kinetic energy increases and the potential energy decreases. This relates to the conservation of energy. E will always be the same value, but K and U will depend on the position of the girl.

This means that if the potential energy decreases a quantity e', then the kinetic energy must be increased by that same amount.

If you want to learn more about energy, you can read:

brainly.com/question/166559

4 0

3 years ago

Which action could help a homeowner maintain soil quality of the quality

Sliva [168]

Increased soul protection by crop residues and plants adding organic matter to the soil through crop rotations manures or crop residues and carful management of fertilizers

6 0

3 years ago

Celine has a bottle that contains 20% of milk and the rest water. The bottle has 1 liter of water. Part A: Write an equation in

klasskru [66]

The problem states that only one variable can be used. Let L be the total number of liters of water and milk combined. 20% of the total is Milk. Therefore, Milk = L x 20/100 = 0.2 L The rest of it is Water. So Water = L - 0.2L = 0.8L The problem states the bottle has 1 liter of water. So 0.8L = 1 Answer to a) 0.8L = 1 is the equation where L is the total number of liters of water and milk combined. Milk = 0.2L and Water = 0.8L b) Solve for L in 0.8L = 1 L = 1/0.8 = 1.25 Milk = 0.2L = (0.2)(1.25) = 0.25 liters

6 0

3 years ago

How do you multiply radicals containing binomials brainly

Rudiy27

Answer:

And if we have a binomial times a binomial we'll have four products or we can think of this as double distribution. We distribute the a so we'd have a times C plus a times D.

Explanation:

8 0

2 years ago

Once a psychoactive drug enters the brain, it acts on one or more neurotransmitters

andreyandreev [35.5K]

Psychoactive substances influence the function and interaction of one or more neurotransmitters in the brain. Depending on the type, dose, and combination of medications used as well as the individual's qualities, expectations, and environment, this can have a variety of consequences on the user's mental and physical health.

<h3>What is a psychoactive drug?</h3>

A psychoactive substance is one that modulates brain activity and has an impact on behavior, cognition, mood, or perception. Based on their results and modes of action, psychoactive substances can be divided into a variety of categories. Stimulants, depressants, opioids, hallucinogens, and cannabis are a few of the main groups.

Neurotransmitters are chemical messengers that transmit impulses between neurons (nerve cells) in the brain and other regions of the nervous system.

Psychoactive medications act on one or more neurotransmitters. The neuron sending the signal, the presynaptic neuron, releases neurotransmitters, which then bind to receptors on the postsynaptic neuron.

Depending on the type of neurotransmitter and receptor involved, this can either stimulate or inhibit the postsynaptic neuron.

Learn more about neurotransmitters at:

brainly.com/question/26387085

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3 0

1 year ago