Let’s say someone drops to Waterman off a skyscraper. The second watermelon is released 1s after The first watermelon. Will the vertical distance between the watermelons always be the same

Given what we know about the speed of light, we can confirm that a single ray of light would take 1.3 seconds to travel from the Moon to the Earth.

Therefore, since the Moon sits at a distance of 390 million meters from the Earth, and the fact that light travels at approximately 300 million meters per second, we can confirm that light from the moon takes roughly 1.3 seconds to reach Earth.

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Answer:

Le due rette rappresentano le leggi del moto di due punti

materiali (per esempio due macchine) che si muovono di moto

rettilineo uniforme. La retta meno pendente (velocità più bassa)

è riferita alla macchina che parte da una posizione iniziale più

avanti rispetto alla seconda macchina. Però, la seconda

macchina, avendo una velocità maggiore della prima (retta più

pendente), nonostante parta più indietro rispetto alla prima, dopo

un certo tempo la raggiungerà. Pertanto, il punto P, intersezione

delle due rette, rappresenta la situazione fisica in cui la seconda

macchina raggiunge la prima. In particolare, le coordinate del

punto P (tempo e spazio), rappresentano l’istante e la posizione

in cui la seconda macchina raggiunge la prima.

Answer:

m

Explanation:

The kinematics allows finding the result for the height of the cliff so that the bodies go down together is: 1,533 m

Kinematics studies the movement of bodies, finding relationships between the position, velocity and acceleration of bodies

In this case the bodies are thrown vertically so their acceleration is the gravity acceleration, directed downwards.

Let's set a reference system with the positive upward direction and zero at the base of the cliff, let's use the subscript 1 for the body that comes out from the bottom of the cliff and the subscript 2 for the body that comes out of the top, the equations for each body they are:

body 1

            [tex]v_1^2 = V_{o1}^2 - 2g (y_1-y_{o1} )[/tex]

body 2

             [tex]v_2^2 = v_{o2}^2 - 2g (y_2-y_{o2})[/tex]

In this case they indicate the initial velocities of each body, [tex]v_{o1}[/tex] = 80 m/s and [tex]v_{o2}[/tex] = 50 m/s, the initial height [tex]y_{o1}[/tex] = 0 and [tex]y_{o2}[/tex] = h, when the bodies fall at the same time they must begin to descend from the same height

            y₁ = y₂

The velocities at this point must be zero

          v₁ = v₂ = 0

We substitute

            0 = [tex]v_{o1}^2 - 2 g y[/tex]

            0 = [tex]v_{o2}^2 - 2 g ( y + h)[/tex]  

Let's solve the system of equations

            [tex]h = \frac{v_{o1} - v_{o2}}{2g}[/tex]  

Let's calculate

            h = [tex]\frac{80-50}{2 \ 9.8}[/tex]

            h = 1.53 m

Consequently, the kinematics allows finding the result for the height of the cliff so that the bodies go down together is: 1.53 m

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Answer:

mass = 25.5kg

Explanation:

The gravitational force equivalent, or, more commonly, g-force, is a measurement of the type of force per unit mass – typically acceleration – that causes a perception of weight, with a g-force of 1 g equal to the value of gravitational acceleration on Earth, g, of about 9.8 m/s².

Mass, m = [tex]\frac{Force}{acceleration due to gravity}[/tex]

[tex]mass,m=\frac{F}{g} = \frac{250}{9.8}= 25.5 kg[/tex]

Answer:

When the temperature drops from 0°C to 4°C, water expands instead of contracting, resulting in a reduction in density. In solid form, water molecules normally form open crystal structures, so as they freeze, their density decreases.

When liquids cool, they constrict and become denser. This is not the case with water. Upon cooling to 4°C, it contracts, but upon reaching 0°C, it begins to expand and becomes ice. Thus, it becomes denser as it cools.

Answer:

Uwu

Explanation:

Answer:b

Explanation: each cm is 10mm so 5cm is 50mm that is less than 500mm

Answer:

the correct answer is False

Explanation:

i hope its right

Answer:

In case of uniformly accelerated motion along a straight path

Explanation:

[tex]\sf{}[/tex]

hope it's helpful to you ☺️

Answer:

.5 kg per page

Explanation:

250/500= .5 kg

Hi there!

We can use the equation:

∑F = ma, where:

∑F = net force (N)

m = mass (kg)

a = acceleration (m/s²)

Rearrange in terms of acceleration:

∑F/m = a

Plug in the given values:

44.5/52 = 0.856 m/s²

Explanation:

to do that

so number 1=64

2=15

Answer:

Strongest

Explanation:

100% correct

The best exercise for Alicia to add to her routine will be biking with occasional sprints. Thus, the correct option is A.

Anaerobic exercise is a type of exercise which involves breaking down of the glucose sugar in the body without using the oxygen gas. Anaerobic means without oxygen, the exercises which does not require oxygen. In practical terms, it means that anaerobic exercise is more intense exercise, however shorter in duration than that of aerobic exercise.

Alicia’s coach thinks that she should try some interval training so that she can get some anaerobic activity. The activity which should be added to her routine is biking with occasional sprints.

Therefore, the correct option is A.

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Answer:

An atom that loses one or more valence electrons to become a positively charged ion is known as a cation, while an atom that gains electrons and becomes negatively charged is known as an anion.

Explanation:

Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus.

Answer:

Online.Vs. In person for what exams board ones?

Answer:

The acceleration of an item is proportional to the net force exerted on it and inversely proportional to its mass. The acceleration of an item increases as the force pressing on it increases. The acceleration of an item decreases as the mass of the thing increases.

It is because the effort distance is greater than the load distance

Explanation:

As we know, Effort×effort distance = load × load distance

So when effort distance is increases,

The effort decreases

So when the spanner’s handle is long

A tight knot can easily be opened by less effrot

I hope it helped

Answer:

F=ma

Explanation:  Let X stand for the new acceleration with the tripled force.

F = m*(12.0 m/s/s)

3F = m*(X)

3F = 3*m*(12.0 m/s/s)

3F = m*(X)

3F = m*(3*12.0 m/s/s)

X = (3*12.0 m/s/s)

a for 3X the force is = (3*12.0 m/s/s), or 36.0 m/s/s

a)

Answer:

Using Pythagorean Theorem.

[tex]F_{R} = \sqrt{Fn^{2} + Fe^{2} } \\\\ F_{R} = \sqrt{52.7^{2} + 91^{2} }\\\\ F_{R} = 105.16N[/tex]

b)

Answer:

[tex]tan^{-1} \frac{opp}{adj} \\ \\ tan^{-1} \frac{52.7}{91} \\ \\ = 30.08^{o}[/tex]

The resultant force of the two forces which are acting perpendicular to each other is 105.15 N and the direction is 59.91 ° from east.

Force is an external agent acting on a body to change it from the state of motion or rest. If two forces acting on a body and both are applied in the same direction, the resultant force will be the sum of two forces in magnitude.

If the two forces are in opposite directions, then the resultant force will be the substracted value of their magnitude. If one force is to the north and other is to the east, then they are perpendicular to each other.

Hence, to find the resultant force we can use the Pythagoras theorem for right angled triangle. The hypotenuse will be the resultant force.

Resultant force = √ (52.7² + 91² )

                          = 105. 15 N.

The direction of the force = Tan ⁻¹ (91 / 52.7 )

                                           = 59.91 ° from east to north.

Hence, the resultant force is 105.15 N with a direction of 59.91 ° from east.

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Answer:

Hey there

A) wave A and B have the same speed.

When they return to the air they will have the same speed. Yes they did have different speeds in water and wood but now they are back in air ("AFTER they encountered different media").

The impedance of the given AC circuit containing resistor and inductor parallel to each other is 55.71 ohms.

The given parameters;

The inductive reactance is calculated as follows;

[tex]\omega _l = 2\pi fl\\\\\omega _l = 2\times 3.142 \times 2,000\times 10\times 10^{-3} = 125.68 \ ohms[/tex]

The impedance is the total opposition to the flow of current in the AC circuit and it is calculated as follows;

[tex]Z _{total} = \frac{1}{\frac{1}{Z_l} + \frac{1}{Z_R} } \\\\Z _{total} = \frac{1}{\frac{1}{125.68} + \frac{1}{100} }\\\\Z _{total} = 55.71 \ ohms[/tex]

Thus, the impedance of the given circuit is 55.71 ohms.

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Question:

A block of mass 1kg is placed on an inclined plane at an angle of 30° to the horizontal. Calculate the frictional force, normal reaction, the coefficient of the static friction​

Answer:

Break the mg force into components in the plane of the inclined plank. Now force acting parallel is mgsin37°. Perpendicular force is mgcos37° which is equal to normal force.  

Now calculate max value of friction force which is 0.8*mg cos37°. Since its greater than pulling force mgsin37°, the body will be at rest and acceleration is zero.  

Force applied by surface is vector sum of normal force and friction force acting.

The distances traveled by the boy will be 4 m. Newton's second equation of motion is applied.

Distance is a numerical representation of the distance between two objects or locations.

The distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.

Given data;

acceleration(a)=2m/s²

Time (t)=2 s

u(Initial velocity)=0

The distance traveled by the boy will be;

[tex]\rm S=ut+\frac{1}{2} at^2 \\\\ \rm S=0+\frac{1}{2} (2)(2)^2 \\\\ S=4 \ m[/tex]

Hence, the distance traveled by the boy will be 4 m.

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Explanation:

v(speed)=10/120=0.08m/s

Answer:

0.08

Explanation:

10/120 = 0.08

I hope this helps!

Answer:

2.35 Nm.............. .

The characteristics of the random error allow to find the result for the best value of the forces is:

In a measurement in physics some type of instrument is used, therefore all measurements have a precision due to the minimum amount that can be measured with the given instrument, the correct way to give the measurement is

     m = m ± Δm

Where m is the measure and Δm the error due to the appreciation of the instrument.

In the measurement process there are variables type that can affect the results, in general they can be divided into two groups:

Statistical methods can be applied to the random type of processes to reduce their effect on the final result, one of the most efficient way is to carry out the measurement several times and since the errors are random, if we obtain the average it must be closer to the true value.

       [tex]m_{average} = \frac{\sum m_i}{n}[/tex]  

Where m_i  is each measurement and n is the number of measurements.

As a result it is

        [tex]m = m_{average} \pm \sigma[/tex]

Where σ  is the standard deviation.

It indicates that three measurements were made of each force, suppose that their values ​​are: F₀₁, F₀₂ and F₀₃, and the best value is

       [tex]F_{o \ average} = \frac{1}{3} (F_{o1} + F_{o2} + F_{o3} )[/tex]

For the tension of the body also takes three measurements.

        [tex]F_{t \ averag} = \frac{1}{3} (F_{t1} + F_{t2} + F_{t3} )[/tex]

The best value of the net forces should be obtained using the average values.

        [tex]\Delta F = F_{t \ average} - F_{o \ average}[/tex]  

In conclusion using the characteristics of the random error we can find the result for the best value of the forces is:

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