All categories

3 years ago

Question 8 of 25

Physics

1 answer:

GuDViN [60]3 years ago

7 0

Answer:

A. They use X-rays that penetrate most objects.

You might be interested in

When light passes into a lower index medium it will be deviated away from the normal. True or false

V125BC [204]

Answer:

$\huge\underline\color{purple}{Answer ☘}$

Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another.

Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density).

<h3>when a light ray goes from a medium with higher refractive index to a medium with lower refractive index.. it gets deviated from the normal.</h3>

<h2>hence... the statement is true...</h2>

hope helpful~

7 0

2 years ago

What do the spheres in the model represent

Sophie [7]

Answer: no

Explanation: we need a picture

4 0

3 years ago

Read 2 more answers

On the moon, a feather is dropped from a height of 1.40 m. The acceleration of gravity on the moon is -1.67 m/s2. Determine the

Molodets [167]

Answer:

1.29 s

Explanation:

Height = 1.40m
Acclⁿ due to gravity = 1.67 m/s²
Time of descent = ?

As we know that ,

$\sf\longrightarrow Time_{descent}= \sqrt{\dfrac{2H}{g_{(moon)}}}\\\\\sf\longrightarrow t_d = \sqrt{\dfrac{ 2\times 1.4}{1.67}} \\\\\sf\longrightarrow t_d =\sqrt{1.67} s\\\\\sf\longrightarrow \boxed{\red{\sf Time_{descent}= 1.29 s }}$

4 0

3 years ago

A 0.30 kg yo-yo consists of two solid disks of radius 5.10 cm joined together by a massless rod of radius 1.0 cm and a string wr

docker41 [41]

Answer:

0.70046 m/s²

2.732862 N

Explanation:

g = Acceleration due to gravity = 9.81 m/s²

m = Mass of yo-yo = 0.3 kg

R = Radius of rolling disk = 5.1 cm

r = Radius of rod = 1 cm

For a rolling disks the acceleration is given by

$a=\frac{g}{1+\frac{R^2}{2r}}\\\Rightarrow a=\frac{9.81}{1+\frac{0.051^2}{2\times 0.01^2}}\\\Rightarrow a=0.70046\ m/s^2$

The acceleration of the yo-yo is 0.70046 m/s²

The tension in the string will be

$T=m(g-a)\\\Rightarrow T=0.3\times (9.81-0.70046)\\\Rightarrow T=2.732862\ N$

The tension in the string is 2.732862 N

8 0

3 years ago

When developing a question for a scientific inquiry, the question will ideally A. identify variables. B. be measurable. C.

Rus_ich [418]

When developing a question for a scientific inquiry, the question will ideally D. all of these.
When it comes to a scientific inquiry, it is important that the question identify variables, be measurable, and not just simply ask why. There have to be a couple of variables, you have to be able to measure the results, and to prove them, supported by evidence.

6 0

3 years ago

Read 2 more answers