30 cm into m ans in step ​

Answer:

The amount of energy carried by a wave is related to the amplitude of the wave

Explanation:

A high energy wave is characterized by a high amplitude; a low energy wave is characterized by a low amplitude.  The energy imparted to a pulse will only affect the amplitude of that pulse.

Hope this helped!!!

The initial velocity of the child is 2.41 m/s

Your question is not complete, I have provided the complete question below.

"A 20-kg child slides down a playground slide with a constant acceleration of a = 2.4 m/s2 parallel to the surface of the slide. The child starts sliding with an initial speed of v0. Refer to the figure. (check the image uploaded)

If the slide is 4.0 m long and the child's final speed is vf = 5.0 m/s, what is their initial speed, in meters per second?"

The given parameters:

mass of the child, m = 20 kg

acceleration of the child, a = 2.4 m/s²

the final velocity of the child, vf = 5 m/s

distance traveled by the child, s = 4 m

To find:

The initial velocity of the child is calculated as follows;

\(v_f^2 = v_o ^2 + 2as\\\\v_o^2 = v_f^2 - 2as\\\\v_0^2 = (5^2) - 2(2.4 \times 4)\\\\v_0^2 = 5.8\\\\v_0 = \sqrt{5.8} \\\\v_0 = 2.41 \ m/s\)

Thus, the initial velocity of the child is 2.41 m/s

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Answer:

Explanation:

Let's turn to the table of planetary densities:

Saturn will float in the water ( 0.7 g/cm³ < 1.0 g/cm³)

Answer:

i cant make funny joke

Explanation:

but i can be alive.

wait no, im failing at that currently.

Answer:

s = d/t = 20 m/40 s = 0.5 m/s

Explanation:

A swimmer swims a distance of 20 m in a time of 40 seconds, then the speed of the swimmer is 0.5 m/s.

The speed of an entity, which is a scalar quantity in regular usage and kinematics, can be defined as the size of the change in direction per unit time or the size of the change in position over time for an object. The initial speed is the upper limit of maximum pace as the duration of a time interval gets closer to zero.

The average pace of the object over an amount of time is computed by subtracting its distance traveled by the length of the interval. Velocity and speed are not the same.

As per the given data provided by the question,

Distance, d = 20 meters

Time, t = 40 seconds

Then average speed, s = d/t

s = 20/40

s = 0.5 m/s.

Therefore, the average speed of the swimmer is 0.5 m/s.

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Answer:

24km/h

Explanation:

go it right on ingenuity 2020

Answer: These apparent star tracks are in fact not due to the stars moving, but to the rotational motion of the Earth. As the Earth rotates with an axis that is pointed in the direction of the North Star, stars appear to move from east to west in the sky.

Explanation: why do the star constellations seem to move across the sky

Answer:

because the world moves around and around rotating in a circle and circling around the sun so as we move the stars stay the same but to our view it looks like their moving but in reality we are.

Explanation:

Answer:

25%

Explanation:

use F=mg

then use the answer you get from that and plug it into W=Fxh

take that answer and divide it by 400 J and multiply by 100

round to sig figs

Answer:

Since strong nuclear forces involve only nuclear particles (not electrons, bonds, etc)  items 3 and 4 are eliminated.

Again item 2 refers to bonds between atoms and is eliminated.

This leaves only item 1.

Nuclear forces are very short range forces between components of the nucleus.

Weak nuclear forces are trillions of times smaller than strong forces.

Gravitational forces are much much smaller than the weak nuclear force.

Answer:

The answer is D

Explanation:

Answer:

I dont understand...٩(●˙—˙●)۶

Explanation:

Sorry...

The atom that has been shown is an atom of carbon(C).

We know that in an atom is the smallest particle of a substance that can be able to take part in a chemical reaction. In this case, we have a an atom that have been shown. As expected, the protons that are in the atom have been shown as the circle that is in the innermost part of the image.

The electrons are found around the shells of the atom. The electrons that are in the shells of the atom must be equal to the number of protons that are in the atom of the element.

Given that the number of electrons must be equal to the number of protons and the number of protons gives us the identity of the element that have been shown in the image, we can conclude that this is an atom of carbon.

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In the parallel combination, the current through R3 is 3 A. In the series combination, the current through R3 is 0.75 A.

To determine the current through resistor R3 in both the parallel and series combinations, we need to apply Ohm's Law and the appropriate formulas for calculating total resistance and current in each configuration.

First, let's consider the parallel combination:

In a parallel combination, the voltage across each resistor is the same. Therefore, the voltage across R3 is also 90 V.

Using Ohm's Law (V = I × R), we can calculate the current flowing through R3 in the parallel combination:

I_parallel = V / R3

= 90 V / 30 Ω

= 3 A

So, in the parallel combination, the current through R3 is 3 A.

Now, let's consider the series combination:

In a series combination, the total resistance is the sum of the individual resistances:

R_total = R1 + R2 + R3

= 60 Ω + 30 Ω + 30 Ω

= 120 Ω

To find the current through the series combination, we can use Ohm's Law:

I_series = V / R_total

= 90 V / 120 Ω

= 0.75 A

Therefore, in the series combination, the current through R3 is 0.75 A.

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Note the complete questions is User

90 V R₁=60 R2=  30, R3 = 30

Based on the circuit above, what would be the current through the R3 resistor in parallel and in series combinantion.

The molecule N2Cl2 has the name dinitrogen dichloride and contains a double bond and two single bonds.

The molecule N2Cl2 is dinitrogen dichloride. It is a covalent molecule has a double bond between the two nitrogen atoms and a single bond linking each nitrogen atom to a chlorine atom.

The structure of the molecule is shown in the image attached. Hence, the compound contains a double bond and two single bonds.

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Certain behaviors and choices during this time can have significant impacts on later-life success are poor diet, lack of exercise, smoking and chronic stress.

Poor diet: Consuming a diet that is high in saturated fats, processed foods, and sugar can lead to weight gain, high blood pressure, and other chronic conditions that can have lasting effects on health.

Lack of exercise: Failing to exercise regularly can increase the risk of chronic diseases such as heart disease, diabetes, and certain cancers, which can impact the quality of life in later years.

Smoking: Smoking is a major risk factor for many chronic diseases, including heart disease, stroke, and lung cancer. Quitting smoking during midlife can significantly reduce the risk of these diseases.

Alcohol abuse: Drinking excessively can increase the risk of liver disease, heart disease, and other chronic health conditions that can negatively impact later-life success.

Chronic stress: Unmanaged stress can contribute to the development of mental health problems, such as anxiety and depression, as well as chronic physical health conditions, such as hypertension and heart disease.

By making healthy choices, managing stress, and maintaining positive perceptions and attitudes, individuals can increase their chances of achieving success in later life.

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Answer:

  v ’= v + v₀

a system can be another vehicle moving in the opposite direction.

Explanation:

In an inertial reference frame the speed of the vehicle is given by the Galileo transformational

          v ’= v - v₀

where v 'is the speed with respect to the mobile system, which moves with constant speed, v is the speed with respect to the fixed system and vo is the speed of the mobile system.

The vehicle's speedometer measures the harvest of a fixed system on earth, in this system v decreases, for a system where v 'increases it has to be a system in which the mobile system moves in the negative direction of the x axis, whereby the transformation ratio is

        v ’= v + v₀

Such a system can be another vehicle moving in the opposite direction.

Answer:

R1 is the first resistance level. It usually falls above the pivot point and below R2 but there are circumstances (see below) when the pivot point can be above R1. R1 is calculated as part of the Pivot Points calculations that traders use to determine where the market might reverse direction.

Explanation:

Answer:

"C" would be the fastest point as the most potential energy has been converted to kinetic energy. Total energy along the line is constant.

Answer:

1) \(I=1.8*10^{-6}\: W/m^{2}\)  

2) \(E=0.037 \: V/m\)

Explanation:

1)

The intensity equation is given by:

\(I=\frac{P}{4\pi r^{2}}\)

Where:

\(I=\frac{20000}{4\pi (30000)^{2}}\)

\(I=1.8*10^{-6}\: W/m^{2}\)  

2)

Now, the intensity and the electric field are related as:

\( I=0.5c\epsilon_{0}E^{2}\)

Here:

We need to solve it for E.

\(E= \sqrt{\frac{2I}{c\epsilon_{0}}}\)

\(E= \sqrt{\frac{2(1.8*10^{-6})}{(3*10^{8})(8.85*10^{-12})}}\)

\(E=0.037 \: V/m\)

I hope it helps you!

Answer:

Inclined Plane

Explanation:

The net electric field at point P is 3.2×10^6 N/C, directed towards the left.

To calculate the net electric field at point P due to charges A and B, we need to consider the vector sum of the electric fields produced by each charge individually.

Given:

Electric field due to charge A: E_A = 8.7×10^6 N/C

Electric field due to charge B: E_B = 5.5×10^6 N/C

Since electric field is a vector quantity, we need to consider both magnitude and direction. Let's assume that the electric field due to charge A points to the left and the electric field due to charge B points to the right.

To find the net electric field at point P, we can subtract the magnitudes of the electric fields since they are acting in opposite directions:

Net electric field at point P = |E_A| - |E_B|

Substituting the given values, we get:

Net electric field at point P = 8.7×10^6 N/C - 5.5×10^6 N/C

                           = 3.2×10^6 N/C

Therefore, the net electric field at point P is 3.2×10^6 N/C, directed towards the left.

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Gravitational Potential Energy , Kinetic Energy and velocity of panther just before hitting the ground will be 790.41599 J , 990.41599 J , 5.6523m/s respectively.

Mass is 62 kg with a height 1.3m .

Gravitational Potential Energy means product of mass , gravitational acceleration and height . Mathematically, GPE= mgh

GPE= 62 x 1.3 x 9.8

= 790.41599 J

Energy lost = Final energy- GPE

Final Energy Δ =  790.41599 J + 200 J

=990.41599 J

To find Velocity of panther just before hitting the ground V:-

Δ⇒mV²/2

990.41599 J= 62 V²/2

V²= {990.41599 x 2}/62

= 31.9489029

V=5.6523m/s

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Answer: Hello! I believe you might have a condition known as Digital Eye Strain (DES). This is cause by too much screen time, poor posture, bad lighting and viewing distance.

Before you panic, this is not permanent. Here’s some ways to help prevent it :

• Put the screen 20-28 inches away, 4-5 in below eye level and adjust your brightness. (Make sure your screen isn’t too bright)

•Rest your eyes for 15 minutes every 2 hours.

•Try the 20-20-20 rule: look at an object 20 ft away for 20 seconds every 20 minutes.

Please rest your eyes more. If it doesn’t go away after a bit. Please book a appointment with your eye doctor to make sure everything’s alright :)

let me know if you have any questions! :)

Answer:

(a) 1470 N/m

(b) 48.2 m

Explanation:

Applying,

(a) F = ke.................... Equation 1

Where F = force applied to the spring, k = spring constant, e = extension

make k the subject of the equation

k = F/e............... Equation 2

But,

F = mg............. Equation 3

Where m = mass, g = acceleration due to gravity

Substitute equation 3 into equation 2

k = mg/e.............. Equation 4

From the question,

Given: m = 6 kg, e = 42-38 = 4 cm = 0.04 m

Constant: g = 9.8 m/s²

Substitute these values into equation 4

k = (6×9.8)/0.04

k = 1470 N/m

(b) Consider the end of the spring to the left which exert a force to the right

Then,

e = F/k............. Equation 5

Given: F = 150 N, k = 1470 N/m

Substitute these values into equation 5

e = 150/1470

e = 0.102 m

Hence the length of the spring is

L = 0.38+0.102 = 0.482 cm = 48.2 m

Answer:

36 s

Explanation:

20 m = 18 s

10 m = ?

20 × 18 = 360÷ 10

= 36 sec

Answer:

Для ответа на этот вопрос нужно открыть терадочку в том месте, где ты записывала определение материальной точки. На случай, если ты этот момент успешно проспала (что не стало бы сюрпризом), поясню - материальной точкой можно считать тело, размерами которого можно пренебречь. А теперь скажи мне, как можно измерить размер, которым пренебрегаешь?

Answer: First one

Explanation: Hot air rises, this is very simple and almost everyone knows it. The explanation is literally the first answer.

Answer:

We can use the formula for the period of a pendulum:

T = (2 * pi * sqrt(L/g))

where:

T = period (in seconds)

pi = 3.14159...

L = length of the pendulum (in meters)

g = acceleration due to gravity (9.81 m/s^2)

We can solve for L by rearranging the formula:

L = (T^2 * g) / (4 * pi^2)

We are given that the pendulum swings 20 times in 25 seconds. The period of one swing is the time it takes to complete one full cycle, so the period of 20 swings is 25 seconds divided by 20 swings, or 1.25 seconds.

Using this value for T and plugging in g, we get:

L = (1.25^2 * 9.81) / (4 * 3.14159^2)

L ≈ 0.153 meters or 15.3 centimeters

Therefore, the length of the pendulum is approximately 15.3 centimeters.

The approximate value of the magnitude of the displacement vector 2D - E is roughly  16.88.

In order to find out the magnitude of the displacement vector 2D - E, you can use these steps:

multiplying  D by 2. this would result to

12i + 6j - 2k

subtracting  E from 2D. this would result to

8i + 11j - 10k

The calculation of Step three entails computing the magnitude of 2D - E where   |V| = sqrt(Vi^2 + Vj^2 + Vk^2)

|2D - E| = sqrt((8^2) + (11^2) + (-10^2))

|2D - E| = sqrt(64 + 121 + 100)

|2D - E| = sqrt(285),

|2D - E| = 16.88 when rounded off to two decimal places.

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