Please help me↓
This topographical map has contour lines 5 ft of elevation (height above sea level) apart; the numbers on the thicker lines are elevation in feet. What is the difference in elevation between the two points marked?
Point II is 45 ft lower.
Point II is 10 ft lower.
Point II is 10 ft higher.
Point II is 45 ft higher.

Answer:

[tex]Distance = 2.4\ km[/tex]

Explanation:

Given

[tex]Time (t) = 6.8s[/tex]

[tex]Temperature = 28C[/tex]

Required

Determine the distance at which the lighting struck

First, we need to determine the speed at which the lighting struck because the peed of sound varies with temperature.

At about 28C, the speed of sound is 346m/s

So, we have the following:

[tex]Speed = 346m/s[/tex]

[tex]Time = 6.8s[/tex]

Distance is calculated as thus:

[tex]Distance = Speed * Time[/tex]

[tex]Distance = 346m/s * 6.8s[/tex]

[tex]Distance = 2352.8[/tex]

Divide by 1000 to get distance equivalent in kilometers

[tex]Distance = \frac{2352.8km}{1000}[/tex]

[tex]Distance = 2.3528km[/tex]

[tex]Distance = 2.4\ km[/tex] ---- Approximated

Answer:

(D) Vf² = Vi² + 2ad

a = 2.269 m/s²

Explanation:

Given;

final velocity of the aircraft, Vf = 33 m/s

initial velocity of the aircraft, Vi = 0

distance traveled by the plane, d = 240 m

The acceleration of the plane is given by the following kinematic equation;

Vf² = Vi² + 2ad

where;

a is the acceleration;

Based on the given options, the correct option is "D".

Calculating the acceleration with the chosen equation;

Vf² = Vi² + 2ad

Vf² = 0+ 2ad

Vf² =  2ad

a = Vf² / 2d

a = (33)² / (2 x 240)

a = 2.269 m/s²

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 1100 × 2

We have the final answer as

Hope this helps you

Answer:

It's definitely Nucleus

Hope this Helps!

Answer:

A)     E = 145.6 N / C , B)  y= 2,8 10-7 m with a downward direction

C) he shape of the trajectory of the two particles is to simulate a parabola,

D)     F_{e} /F_{g} = 10³⁴

Explanation:

A) For this exercise we use Newton's second law to find the acceleration of the electron, where the force is electric

           F = m a  

           - e E = m a

          a = - e E / m

with the field directed downward, the acceleration is in the vertical upward direction.

We look for how much the electron moves with kinematics, in the x direction there is no acceleration,

x axis (parallel to plates)

           x = v₀ t

           t = x / v₀

y axis (perpendicular to plates)

          y = y₀ + [tex]v_{oy}[/tex] t + ½ a t²

Let's take the zero of the system in the middle of the plates y₀ = 0, also the initial vertical velocity is zero (v_{oy} = 0) the width of the plate is known

          y = ½ a t²

we substitute

         y = ½ (e E /m)  (x / v₀)²

         y = ½ e x2 /m v₀²   E

we look for the electric field

        E = 2 m y v₀² / e x²

where to use this expression the length and width of the condenser must be known, suppose that the length is x = l = 1 cm = 1 10⁻² m and the width is y = 0.5 mm = 0.5 10⁻³ m

let's calculate

         E = 2  9.1 10⁻³¹ 0.5 10⁻³ (1.6 10⁶)² / (1.6 10⁻¹⁹ (1 10⁻²)²)

         E = 145.6 N / C

B) The electron is exchanged for a proton

Let's look for the vertical displacement, in this case as the proton has a positive charge it moves towards the bottom of the plates

          y = ½ e x² / m v₀² E

          y = ½ 1.6 10⁻¹⁹ 1 10⁻⁴ / (1.67 10⁻²⁷ (1.6 10⁶)²   145.6

          y = 28.4375 10⁻⁸ m

since the distance between the plates is 0.5 10-3 m, the proton passes the condensate because its deflection is very small

In summary, its displacement is y= 2,8 10-7 m and with a downward direction (the same direction of the electric field)

C) The shape of the trajectory of the two particles is to simulate a parabola, but one for having a negative charge (electron) the force is upwards and the other for having a positive charge (proton) the trajectory is downwards

D) The force of gravity

           [tex]F_{g}[/tex] = G m M / R²

electron

          Between the electron and the positive charges of the conducting plate

           F_{g}= 6.67 10⁻¹¹ 1.67 10⁻²⁷ 9.1 10⁻³¹ / (0.5 10⁻³)²

           F_{g} = 4.1 10⁻⁵¹ N

electric force

           F_{e} = -e E

           F_{e} = - 1.6 10⁻¹⁹ 145.6

           F_{e} = 2.3 10⁻¹⁷ N

let's look for the reason between these two forces

         F_{e} / F_{g} = 2.3 10⁻¹⁷ / 4.1 10⁻⁵¹

          F_{e} /F_{g} = 10³⁴

We see that the electric force is many orders of magnitude higher than the gravitational force.

Answer:

The correct option is;

D) The force exerted on the astronaut by Earth is equal to the force exerted on Earth by the astronaut

Explanation:

According to Newton's third law of motion, in nature, for every action, there is an equal and opposite reaction, such that if a first object exerts a certain amount of force on a second object, the second object will exert a force of equal magnitude and opposite direction to that exerted by the first object

Therefore, the gravitational force exerted by Earth on the astronaut, is equal to the force exerted by the astronaut on Earth.

The claim from the options that is true about the force exerted on the astronaut by Earth is;

Option D; The force exerted on the astronaut by Earth is equal to the force exerted on Earth by the astronaut.

Force(F) = Mass * Acceleration

Thus, the same force exerted on the astronaut by the earth is same exerted on the earth by the astronaut.

Read more about force of gravity at; https://brainly.com/question/11569146

Answer:

The speed of the apple will be 2.81 m/s when the arrow enters it.

Explanation:                

We can find the speed of the apple by conservation of linear momentum:

[tex] p_{i} = p_{f} [/tex]

[tex] m_{ap}v_{ap_{i}} + m_{a}v_{a_{i}} = m_{ap}v_{ap_{f}} + m_{a}v_{a_{f}} [/tex]

Where:

[tex]m_{ap}[/tex] is the mass of the apple = 100 g = 0.1 kg

[tex]m_{a}[/tex] is the mass of the arrow = 2.5 g = 0.0025 kg

[tex]v_{ap_{i}}[/tex] and [tex]v_{ap_{f}}[/tex] is the initial and final speed of the  apple respectively

[tex]v_{a_{i}}[/tex] and [tex]v_{a_{f}}[/tex] is the initial and final speed of the  arrow respectively

Since the apple was originally at rest ([tex]v_{ap_{i}}[/tex] = 0) and knowing that [tex]v_{a_{f}}[/tex] = [tex]v_{ap_{f}}[/tex] when the arrow enters into the apple, we have:

[tex] 0 + 0.0025 kg*115 m/s = v(0.0025 kg + 0.1 kg) [/tex]  

[tex]v = 2.81 m/s[/tex]  

Therefore, the speed of the apple will be 2.81 m/s when the arrow enters it.

I hope it helps you!  

Answer:

Explanation:

The car will fall with acceleration due to gravity which is equal to 9.8 m /s²

For downward fall ,

initial velocity u = o

acceleration due to gravity = g = 9.8 m /s

final velocity v = ?

displacement h = 5.2 m

v² = u² + 2 gh

v² = 0 + 2 x 9.8 x 5.2

= 101.92

v = 10.1 m /s

Answer: Action and reaction forces are applied to different objects

Explanation:

Answer:

action and reaction forces are applied to different objects

Explanation:

Answer is D. A capacitor

Answer:

Displacement is 9m

Distance traveled is 9m

Answer:

I would say C

Explanation:

Hope I helped

Answer:

I think it is c

Explanation:

I don't know how to explain it I'm not really the best at explaining things.

Answer:

Glia

Explanation:

Answer:

C

Explanation:

Answer:

Fa = 5000 [N]

Explanation:

To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

Let's assume that the movement of the plane is to the right, any movement or force to the right will be marked with a positive sign, while any force or movement to the left, will be taken as negative.

The force of the turbine drives the plane to the right, therefore it is positive, the acceleration is constant and keeps the movement to the right, therefore it is positive, the wind drag force tries to prevent the movement of the plane to the left therefore it is negative, with this analysis we deduce the following equation.

ΣF = m*a

where:

ΣF = sum of forces [N] (units of Newtons)

m = mass = 65000 [kg]

a = acceleration = 3 [m/s²]

Fa = force exerted by the air [N]

200000 - Fa = 65000*3

Fa = 200000 - (3*65000)

Fa = 5000 [N]

D is the correct answer!

Answer;   D is the answer

Explanation:

Answer

divide by 9.8 or 10

Explanation:

normal force equals to the weight, which is equal to mass* gravitational force

Answer:

10m/s

Explanation:

Answer: 10

Explanation: Because, 10*10= 100 or 100/10=10

Answer:

Look below :) Hope this helped. Please provide Brainliest, as reporters took all I had away. Thanks!

Explanation:

Kepler's family was Lutheran and he adhered to the Augsburg Confession a defining document for Lutheranism. However, he did not adhere to the Lutheran position on the real presence and refused to sign the Formula of Concord. Because of his refusal he was excluded from the sacrament in the Lutheran church. This and his refusal to convert to Catholicism left him alienated by both the Lutherans and the Catholics. Thus he had no refuge during the Thirty-Years War.

The Holy Roman Empire of German Nationality at the Time of Kepler

The Holy Roman Empire of German Nationality at the Time of Kepler.

In 1612 Lutherans were forced out of Prague, so Kepler moved on to Linz. His wife and two sons had recently died. He remarried happily, but had many personal and financial troubles. Two infant daughters died and Kepler had to return to Württemburg where he successfully defended his mother against charges of witchcraft. In 1619 he published Harmonices Mundi, in which he describes his "third law."

In spite of more forced relocations, Kepler published the Epitome Astronomiae in 1621. This was his most influential work and discussed all of heliocentric astronomy in a systematic way. He then went on to produce the Rudolphine Tables that Tycho had envisioned long ago. These included calculations using logarithms, which he developed, and provided perpetual tables for calculating planetary positions for any past or future date. Kepler used the tables to predict a pair of transits by Mercury and Venus of the Sun, although he did not live to witness the events.  

Johannes Kepler died in Regensburg in 1630, while on a journey from his home in Sagan to collect a debt. His grave was demolished within two years because of the Thirty Years War. Frail of body, but robust in mind and spirit, Kepler was scrupulously honest to the data.

Short Biography -|- Kepler's Firsts -|- Kepler's Laws -|- People and Events in Kepler's Time -|- Articles

Biographies and books -|- Web Sites -|- IYA Kepler

A List of Kepler's Firsts

First to correctly explain planetary motion, thereby, becoming founder of celestial mechanics and the first "natural laws" in the modern sense; being universal, verifiable, precise.

In his book Astronomia Pars Optica, for which he earned the title of founder of modern optics he was the:

First to investigate the formation of pictures with a pin hole camera;

First to explain the process of vision by refraction within the eye;

First to formulate eyeglass designing for nearsightedness and farsightedness;

First to explain the use of both eyes for depth perception.

Answer:

the temperature measured by the thermometer is 25 ° X

Explanation:

The computation of the temperature measured by the thermometer is shown below:

Here is the thermometric scale list

(X - 0) ÷  C - 0 = (50 - 0) ÷ (100 - 0)  

X ÷ C = 50 ÷100  

X = C ÷ 2  

Now if there is 50 degrees celcius

So, the x would be

= 50 ÷ 2

= 25 ° X

Hence, the temperature measured by the thermometer is 25 ° X

The same is to be considere d

Answer:

131.25

Explanation:

i worked it out on a diffrent sheet so its hard to explain

Answer:131 is the right answer

Explanation:

Answer:

A

Explanation:

got it right on edge 2021 :)

The product needs to better solve the problem for which it was designed ( first option )

After testing the new technology on patients and it showed only 25% success rate ( very low success rate).  It is concluded that before Doctors can report that the new technology design is successful is when it better solves the problem for which it was designed for ( i.e. increase in the success rate to > 50% ). because for a procedure to be considered successful for deployment it will need to record a success rate of over 50% of the test patients.

Therefore the product needs to better solve the problem for which it was designed

learn more about medical technology  : https://brainly.com/question/1590235

Answer:

[tex] \huge{ \boxed{ \bold{ \sf{77 \: m/s}}}}[/tex]

☯ Question :

☯ [tex] \underbrace{ \sf{Required \: Answer : }}[/tex]

☥ Given :

☥ To find :

☄ We know ,

[tex] \boxed{ \sf{v = f \times λ}}[/tex]

where ,

Now, substitute the values and solve for v.

➺ [tex] \sf{v = 11 \times 7}[/tex]

➺ [tex] \boxed{ \sf{v = 77 \: m/s}}[/tex]

-------------------------------------------------------------------

✑ Additional Info :

Hope I helped!

Have a wonderful time! ツ

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Answer:

The average speed is [tex]v = 1260 \ km/s[/tex]

The average speed is different from the average velocity in this question

Explanation:

From the question we are told that

   The equatorial  radius of Jupiter is  [tex]R_j = 7.1*10^{4} \ km[/tex]

   The period of oscillation of Jupiter is [tex]T_J = 9 \ hours , 50 \ min = 35400 \ seconds[/tex]

Generally the average speed is mathematically represented as

      [tex]v = \frac{2 \pi * R_j }{T_J}[/tex]

=>   [tex]v = \frac{2 *3.142 * 7.1*10^{4} }{35400}[/tex]

=>   [tex]v = 1260 \ km/s[/tex]

Generally in average speed the direction is not considered while in average velocity the direction is considered for the  case of this question the movement equitorial point has no direction in that it start from one point and after its periodic motion it still remains at that point

Answer:

he can use the laser to point to specific information on the slides.

he can use the laser to point to specific information on the slides.Explanation:

He can use the laser to point to specific information on the slides might a laser best help him with the presentation. Hence, option B is correct.

When something is referenced in the text, "specific information" refers to an explicit, precise fact or description of that item. Generally speaking, general information is nebulous and serves as a wide description of something.

A particular instance is a particular example. In order to present a specific example of technology, one could write about specific individuals using a specific machine. You would need to write about specific individuals in order to provide a concrete example of any human activity.

There are various specific issues that need to be resolved. To address particular challenges, specific groups may be formed. I prompted him to provide further details. She is from the United States, namely Boston.

Thus, option B is correct.

For more information about specific information, click here:

https://brainly.com/question/9777112

#SPJ6

Answer:

A

Explanation:

An ion with a negative charge

Answer:A

Explanation:

Answer:

true stick up for urself