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sveta [45]
4 years ago
11

1.What is a medulla? What do forensic scientists use this for?

Physics
1 answer:
maxonik [38]4 years ago
4 0

A medulla is a group of cells that are going through hair, forensic scientist use it to find out the pigment, (color), and the shape.

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2. Michelle bought 15.6 yards of fabric. She used 5.43 yards in her art installation. About what percent of the fabric did she u
photoshop1234 [79]
35%
5.43/15.6
This is how you calculate the percentage the answer is 35%
4 0
3 years ago
What is the acceleration of an object that takes 20 sec to change from a speed of 200 m/s to 300 m/s ?
marin [14]

<u>Given</u><u>:</u>

  • initial velocity, u = 200 m/s

  • Final velocity, v = 300 m/s

  • Time taken, t = 20 sec

<u>To</u><u> </u><u>be</u><u> </u><u>calculated</u><u>:</u>

Calculate the acceleration of given object ?

<u>Formula</u><u> </u><u>used</u><u>:</u>

Acceleration = v - u / t

<u>Solution</u><u>:</u>

We know that,

Acceleration = v - u / t

☆ Substituting the values in the above formula,we get

Acceleration ⇒ 300 - 200 / 20

⇒ 100/20

⇒ 5 m/s²

5 0
4 years ago
which describes the relationship between the frequency, wavelength, and speed of a wave as the wave travels through diffrent med
Goryan [66]
As speed changes, wavelength changes, and frequency remains the same
5 0
3 years ago
A ball of mass m is found to have a weight Wx on Planet X. Which of the following is a correct expression for the gravitational
Naya [18.7K]

Answer: B. The gravitational field strength of Planet X is Wx/m.

Explanation:

Weight is a force, and as we know by the second Newton's law:

F = m*a

Force equals mass times acceleration.

Then if the weight is:

Wx, and the mass is m, we have the equation:

Wx = m*a

Where in this case, a is the gravitational field strength.

Then, isolating a in that equation we get:

Wx/m = a

Then the correct option is:

B. The gravitational field strength of Planet X is Wx/m.

4 0
3 years ago
What is another unit for momentum besides kg-m/s?<br> a. N<br> b. N-s<br> c. N-s2<br> d. N/s
lara [203]
'Newton-second' is dimensionally equivalent to 'kilogram-meter/second'.
8 0
3 years ago
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