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Elan Coil [88]
3 years ago
15

SOMEONE PLEASE ANSWER IM DESPRATE AND NOONES ANSWERING MY QUESTIONS, ILL GIVE U A PICTURE OF MY CAT TO BRIGHTEN YOUR DAY AND BRA

INLIEST+THANKS/5STARS ON ALL OF YOUR ANSWERS IF U ANSWER THIS FAST!!
To investigate absorption, Hector cuts two rectangles from five different-colored sheets of construction paper. He then staples three sides of each pair of rectangles to make a pocket and inserts a thermometer into each.

He takes the thermometers in the construction paper pockets outside, where it is clear and sunny. The initial temperature of each thermometer is 22°C. The image shows the thermometers after being outside for 15 minutes.

A thermometer in black paper reads 38 degrees Celsius, a thermometer in white paper reads 24 degrees Celsius, a thermometer in green paper reads 29 degrees Celsius, a thermometer in red paper reads 31 degrees Celsius, and a thermometer in blue paper reads 33 degrees Celsius.
Complete Hector's table by recording the final temperature and calculating the temperature change for each thermometer.

Physics
1 answer:
viktelen [127]3 years ago
5 0

Answer:

Black Final: 38; Change: 16

White Final: 24; Change: 2

Green Final: 29; Change: 7

Red Final: 31: Change: 9

Blue: 33: Change: 11

Explanation:

Black Final: 38

Black Change: 38 - 22 = 16

White Final: 24

White Change: 24 - 22 = 2

Green Final: 29

Green Change: 29 - 22 = 7

Red Final: 31

Red Change: 31 - 22 = 9

Blue Final: 33

Blue Change: 33 - 22 = 11

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ikadub [295]

Answer:

  R = 6.3456 10⁴  mile

Explanation:

For this exercise we will use Newton's second law where force is gravitational force

      F = m a

The satellite is in a circular orbit therefore the acceleration is centripetal

      a = v² / r

Where the distance is taken from the center of the Earth

     G m M / r² = m v² / r

     G M / r = v²

The speed module is constant, let's use the uniform motion relationships, with the length of the circle is

     d = 2π  r

     v = d / t

The time for a full turn is called period (T)

Let's replace

     G M / r = (2π r / T)²

     r³ = G M T²²2 / 4π²

     r = ∛ (G M T² / 4π²)

We have the magnitudes in several types of units

      T = 88.59 h (3600 s / 1h) = 3.189 10⁵ s

      Re = 6.37 10⁶ m

Let's calculate

     r = ∛ (6.67 10⁻¹¹ 5.98 10²⁴ (3,189 10⁵)²/4π²)

     r = ∛ (1.027487 10²⁴)

     r = 1.0847 10⁸ m

This is the distance from the center of the Earth, the distance you want the surface is

     R = r - Re

     R = 108.47 10⁶ - 6.37 10⁶

     R = 102.1 10⁶ m

Let's reduce to miles

      R = 102.1 10⁶ m (1 mile / 1609 m)

     

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6 0
3 years ago
An 6 kg object accelerating from 17 m/s to 10 m/s. What is the change in momentum of the object?
Oksana_A [137]

Answer:

the change is = 17 × 10 = <u>1</u><u>7</u><u>0</u><u> </u>=28.33

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3 0
3 years ago
Derive the dimension of Power ​
stellarik [79]

Answer:

The dimension of power is energy divided by the time or [ML^2T^-3]

Explanation:

Power =\frac {Work Done}{Time}

We can derive Dimensions of Power from both formula.

Power = Force * Velocity

As,

Force = mass * acceleration

Therefore, Dimensions of

Force = [M]*[LT^-2] = [MLT^-2]

Since,

Velocity = \frac{Length}{Time}

Now, Dimension of

Velocity = [LT^-1]

We have Both Dimensions,Now we can derive Dimensions Of Power,

Power = Force * Velocity

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7 0
3 years ago
Two blocks are initially at rest with a compressed spring between them. When the spring is released, the 2m block moves to the l
Vlad1618 [11]

<u>Answer:</u>


In an <u>inelastic collision</u> the kinetic energy is not conserved, but <u>the total momentum of the system is conserved</u>.



In other words; the Initial momentum P_{i} is equal to the Final Momentum P_{f}:



P_{i}=P_{f}



Then:


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This means that after the collision the kinetic energy is transformed (dissipated) into another type of energy (caloric energy, for example); and there may be deformation in the blocks.



Therefore, the sentence that best describes this situation is:



<h2>The total momentum is zero.  </h2>
8 0
3 years ago
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You fire a paintball from a paintball gun straight up into the air at 25.0 m/s. What is the ball velocity at the higher point th
iVinArrow [24]

Given :

You fire a paintball from a paintball gun straight up into the air at 25.0 m/s.

To Find :

What is the ball velocity at the higher point that the ball reaches.

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So, the ball will decelerate and when ball reaches maximum height its velocity will become zero.

Therefore, ball velocity is 0 m/s at maximum height.

Hence, this is the required solution.

5 0
3 years ago
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