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AlexFokin [52]
3 years ago
14

Somebody can tell me what answers it is?

Physics
2 answers:
sergij07 [2.7K]3 years ago
6 0

Answer:

D

Explanation:

The color you see is the color the object reflectes. The rest of the color are absorbed by that object.

butalik [34]3 years ago
6 0
Isn’t it all colors are absorbed except red? OK I’M NOT THE BRIGHTEST SO
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Your lab instructor has asked you to measure a spring constant using a dynamic method—letting it oscillate—rather than a sta
yuradex [85]

Answer:

  k = 6,547 N / m

Explanation:

This laboratory experiment is a simple harmonic motion experiment, where the angular velocity of the oscillation is

         w = √ (k / m)

angular velocity and rel period are  related

         w = 2π / T

substitution

         T = 2π √(m / K)

in Experimental measurements give us the following data

  m (g)     A (cm)    t (s)   T (s)

  100        6.5         7.8    0.78

  150        5.5          9.8   0.98

   200      6.0        10.9    1.09

   250       3.5        12.4    1.24

we look for the period that is the time it takes to give a series of oscillations, the results are in the last column

        T = t / 10

To find the spring constant we linearize the equation

        T² = (4π²/K)    m

therefore we see that if we make a graph of T² against the mass, we obtain a line, whose slope is

         m ’= 4π² / k

where m’ is the slope

           k = 4π² / m'

the equation of the line of the attached graph is

       T² = 0.00603 m + 0.0183

therefore the slope

       m ’= 0.00603  s²/g

    we calculate

         k = 4 π² / 0.00603

          k = 6547 g / s²

we reduce the mass to the SI system

         k = 6547 g / s² (1kg / 1000 g)

         k = 6,547 kg / s² =

         k = 6,547 N / m

let's reduce the uniqueness

         [N / m] = [(kg m / s²) m] = [kg / s²]

7 0
3 years ago
A man pushes on a box at an angle of 30.0° with a force of 20.0 N and the box moves across the floor. Which of the following com
9966 [12]
Not sure what the given options are, but the answer is the horizontal component. This is given by Force x cos(angle), or Fcos(θ), where θ is the angle. In this case that would be 20cos(30) = 17.32N
6 0
3 years ago
What type of device is a refrigerator?
Tamiku [17]
A heat pump that uses work to move heat
7 0
2 years ago
This image shows layers underground.
irina [24]

Answer:

soil

Explanation:

CORRECT

3 0
3 years ago
Read 2 more answers
Look at the diagram below. It shows a ray of light about to enter a glass block. As the light waves enter the glass block they _
Svetlanka [38]

Answer:

You can say that they "change" in speed or "slow" in speed.

Note wavelength where y is the wavelength and N the index of refraction:

N1 y1 = N2 y2

If N1 is air (N1 = 1) and N2 = 1.33 then

y1 = 1.33 y2

Since y2 is less the speed will be smaller

6 0
3 years ago
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