Change the color of the light. Shine all the colors on the metal: red, yellow, orange, green, blue, indigo, and violet. What effect did the color of the light have on the metal?

Answer: First stage

Explanation:

The four stages of technological design include:

• identifying a problem.

• Designing a solution.

• Implement, build, and test the design.

• Determine if solution met the need.

In this scenario, Robert Shuman identified the problem. This was depicted as he stated that coal and oil would eventually run out and that humans needed to learn how to use the more-abundant energy resource of the Sun,

Answer:

Explanation:

We need the power equation for this which is

P = Work/time

We have everything we need to solve this (the mass of the object is extra information):

P = 6860/4

P = 1715W

Answer:

[tex]P(t) = 50t +25[/tex]

[tex]t = 2.5s[/tex]

Explanation:

Given

See attachment for graph

Solving (a): The graph equation.

Pick two points on the line of the graph

[tex](t_1,P_1) = (0.9,70)[/tex]

[tex](t_2,P_2) = (0.7,60)[/tex]

Calculate the slope (m)

[tex]m = \frac{P_2 - P_1}{t_2 - t_1}[/tex]

[tex]m = \frac{60 - 70}{0.7 - 0.9}[/tex]

[tex]m = \frac{-10}{-0.2}[/tex]

[tex]m = 50[/tex]

The equation is then calculated using:

[tex]P(t) = m(t - t_1) + P_1[/tex]

[tex]P(t) = 50(t - 0.9) + 70[/tex]

[tex]P(t) = 50t - 45+ 70[/tex]

[tex]P(t) = 50t +25[/tex]

Solving (b): Solve for t when [tex]P(t) =150cm[/tex]

We have:

[tex]P(t) = 50t +25[/tex]

Substitute: [tex]P(t) =150cm[/tex]

[tex]150 = 50t + 25[/tex]

Collect like terms

[tex]50t = 150 - 25[/tex]

[tex]50t =125[/tex]

Divide both sides by 50

[tex]t = \frac{125}{50}[/tex]

[tex]t = 2.5s[/tex]

Answer:

1:D

2:B

3:B

4:D

5:A

13:A

14:A

15:B

16:A

7:A

9:B

8:B

11:C

12:A

Explanation:

Sorry for incomplete answers

Answer:

1. Stay out of floodwater.

2. Never use a wet electrical device.

3. If the power is out, use flashlights instead of candles.

4. Prevent carbon monoxide poisoning.

5. Be careful near damaged buildings.

6. Stay away from power lines.

7. Protect yourself from animals and pests.

8. Drink safe water. Eat safe food.

Explanation:

Because, there is not atmosphere in vacuum. So, sound does not propagate through a vacuum.

Answer:

A: -2.6 × 10^(-6) C and 2.6 × 10^(-6) C

Explanation:

According to coulombs law, the formula for the force between 2 charged particles is;

F = kq1•q2/r²

Where;

F is Force = |1N|

q1 and q2 are the charges of both particles

k is coulombs constant = 9 × 10^(9) N.m²/C²

r is distance between particles = 0.25

Now, the force |1N| means -1 or +1

Thus;

-1 = 9 × 10^(9) × q1•q2/(0.25)²

Or

1 = 9 × 10^(9) × q1•q2/(0.25)²

Thus;

q1•q2 = -6.94 × 10^(-12)

Or q1•q2 = 6.94 × 10^(-12)

Now, we are told that the magnitude of both charges are the same.

Thus;

q² = 6.94 × 10^(-12)

q = √(6.94 × 10^(-12))

q = 2.6 × 10^(-6) C

Since from earlier, we saw that;

q1•q2 = -6.94 × 10^(-12)

Or q1•q2 = 6.94 × 10^(-12)

Thus means that one of the charges will be negative while the other will be positive.

Thus, the charges are;

-2.6 × 10^(-6) C and 2.6 × 10^(-6) C

Answer:

voltage ,current and resistance

Answer:

Its Moving at a constant Speed of 90km/hr

You can convert this speed to Meters/Second or Change it to Km/Second(Because we need our distance in Km)

So 90km/hr x 1/60 x1/60

=90km/3600sec

v=0.025km/sec

When an Object Moves at Constant Speed... Its displacement(distance) is given by

d=vt

given v=0.025km/sec

t=1sec

d=0.025km/sec x 1sec

d=0.025km.

Answer:

0.025

Explanation:

speed= 90km/hr

speed in m/s= 18/5*90

                       = 25m/s

25 m= 25/1000km=0.025

Answer:

Gravitone

Explanation:

In theories of quantum gravity, the graviton is the hypothetical quantum of gravity, an elementary particle that mediates the force of gravity. There is no complete quantum field theory of gravitons due to an outstanding mathematical problem with renormalization in general relativity.

The 2nd note will have a higher frequency or pitch.

Explanation:

The frequency of a standing wave in a string is given by

[tex]f = \frac{ \sqrt{ \frac{t}{ (\frac{m}{l} )} } }{2l} [/tex]

where t = tension of the string

m/l = mass density of the string

l = length of the string

By placing your finger on the string, you increase the tension and at the same time, shorten the length of the string, thereby increasing the frequency of the sound due to the standing wave produced on the string.

Answer: Try pumping the brake pedal to increase pressure.

Explanation:

When the brake of a vehicle fails when driving, it's important to pump the brake pedal to increase pressure.

Sometimes, there may be a soft brake due to the fact that the brake master cylinder of the vehicle cannot full pressure which is necessary for the braking power.

One should quickly pump the brake pedal with his or her foot so as to generate enough pressure which will be necessary in stopping safely.

Answer:

Δx = 2m

Explanation:

From the given information:

De la información dada:

El desplazamiento ocurrió en un vector que se mueve desde una posición inicial particular hasta el final.

Entonces, supongamos que el desplazamiento es D;

Luego:

D = (7,5 ) - (5,7)

D = (2, -2)

Por lo tanto, el valor del desplazamiento de la coordenada x; Δx = 2m

Answer:

Building is 747.19 m tall

Explanation:

Given, t

Total velocity v = 123 m/s

Horizontal velocity or the X -component if velocity vx = 22 m/s

For a horizontal projectile motion  

V = Sqrt (vx^2 + g^2t^2)

Or t = sqrt{(v^2 – vx^2)/g^2} ---Eq (1)

Time of flight  

t = sqrt (2h/g) – Eq (2)

where h is the height

Equating, both the equation, we get –  

h = (123^2 – 22^2)/19.6 = 747.19 m

...... take off.....(complete)

Rubbing both pieces cause each piece to have a negative charge.

When two parts have the same they repel each other, so holding one piece up tot he end of the other piece would push it away.

Because one piece is held in the middle by a string, it would rotate the piece in a circle.

If they held the piece to the other end of the one held by a string it would start to rotate in the opposite direction.

Covalent

Explanation:

Covalent Bond

Answer:

diphosphorus trioxide

Explanation:

Answer:

S = 26.58 meters

Explanation:

Given the following data;

Initial velocity = 4.66 m/s

Acceleration = 5.66 m/s²

Time = 2.35 seconds

To find the distance travelled by the object, we would use the second equation of motion;

S = ut + ½at²

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

S = 4.66*2.35 + ½*5.66*2.35²

S = 10.951 + (2.83 * 5.5225)

S = 10.951 + 15.629

S = 26.58 meters

The answer to this is B, C, and D. hope this helped

The correct answer to this open question is the following.

Unfortunately, you did not attach the article or the text. You also forgot to attach the options for the question.

However, trying to help you we did some deep research and can comment on the following.

The statement that describes the central idea of the text is "Baseball can be explained and improved by collecting data and studying the natural laws at play in the sport."

You are referring to the article written by Stephen Ornes, of August 21, 2013, for Science News for Students.

The author refers to the idea that baseball and physics are related and can be understood through the "eyes" of science. Statistics bring interesting data to help understand the game.

And this idea is correct because today, baseball coaches and other sports coaches as is the case of football, use a series of statistics and data to better hire talent for their respective teams, as well as to better create plans and game strategies derived from the results and interpretation of data.

Answer:

There are four natural states of matter: Solids , liquids, gases and plasma. The fifth state is the man-made Bose-Einstein condensates. In a solid, particles are packed tightly together, so they don't move much.

Explanation:

Answer:

Acceleration is defined as the rate of change of velocity

Explanation:

Its A

Answer:

mars

Explanation:

the planet that is the odd is Mars

Answer:

2. Given:

m=1000Kg

a=(9.8m/s)^2

F=m×a

=9.8×1000

=9800N

3.Given:

m=50kg

f=500N

F=m×a

500N=50Kg×a

50kg×a=500N

a=500÷50

a=(10m/s)^2

Answer: B

Explanation: The higher temperature increases the reaction rate but also favors the reverse read on.

The higher temperature increases the reaction rate, but it also favors the reverse read on. So, option B.

The pace at which the products are created from the reactants in a chemical reaction is referred to as the rate of reaction.

Here,

Generally, reactions progress more quickly as the temperature rises.

The average kinetic energy of the reactant molecules will rise with a rise in temperature. The number of molecules having threshold energy rises, increasing the quantity of efficient collisions that actually occur.

Therefore, as the temperature of the reaction is increased, the rate of the reaction increases. But also favors the reverse reaction.

Hence,

The higher temperature increases the reaction rate, but it also favors the reverse read on.

To learn more about rate of reaction, click:

https://brainly.com/question/30546888

#SPJ5

Answer:

According to Newton's third law, throwing the apples in the opposite direction to the shore with a force, F₁, one after the other, repeatedly, pushes the both towards the shore with a force also equal to F₂ until the boat reaches the shore

Explanation:

The given parameters are;

The distance of the boat from the shore = 20 meters

The available propulsion devices = A box of apples

According to Newton's third law of motion states that action and reaction are equal and opposite

Therefore, according to Newton's third law, by throwing the apple into the  water in the opposite direction to the shore, such that each apple of mass m₁, is given an acceleration a₁, will result in a force, F₁ = m₁a₁ in the direction away from the shore

According to Newton's third law of motion, the force F₁, will result in an opposite reaction force F₂ in the direction of the shore, such that as F₁ is made large by giving a higher acceleration, a₁ the apples, reaction force on the occupant of the boat , who is throwing the apple, F₂, increases

F₁ = -F₂

Where;

F₂ = m₂·a₂

a₂ = The acceleration of the boat and the occupant

m₂ = The mass of the boat and the occupant

Given that the mass, m₂, is constant, the acceleration of the boat and occupant, a₂, increases as F₁ increases, increasing the speed of the boat from zero to positive value above zero m/s and the boat moves towards the shore