1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hatshy [7]
2 years ago
10

1. The electromagnetic waves described in the reading are different in which two ways:

Physics
1 answer:
Kipish [7]2 years ago
8 0

Answer:

D is the answer

Explanation:

But do u know if im right test it out then surprise

You might be interested in
Susie blows up a balloon. First, she places the balloon in a bucket of ice water. She observes the balloon. She then removes the
Alexus [3.1K]
For number one she is going to observe the contraction of the ballon

For number two she is going to observe the expansion of the ballon
6 0
2 years ago
3. What color of laser light shines through a diffraction grating with a line density of 500 lines/mm if the third maxima from t
mestny [16]

Answer:

Wavelength is 471 nm

Explanation:

Given that,

Lines per unit length of diffraction grating is 500 lines/mm.

The third maxima from the central maxima (m=3) is at an angle of 45°

We need to find the color of laser light shines through a diffraction grating.

The condition for maxima is :

d\sin\theta=m\lambda

d = 1/N, N = number of lines per mm

\lambda=\dfrac{1}{Nm}\sin\theta\\\\\lambda=\dfrac{10^{-3}}{500\times 3}\sin(45)\\\\\lambda=4.31\times 10^{-7}\\\\\text{or}\\\\\lambda=471\ nm

6 0
3 years ago
Question 26 (1 Point)
LUCKY_DIMON [66]

The book continue to move due to its inertia

Explanation:

We can answer this question by using Newton's first law, which states that:

"When an object is moving with constant velocity (or it is at rest), it will continue moving with constant velocity (or will stay at rest) unless acted upon an external unbalanced force".

This law is also known as law of inertia.

If we apply this law to the situation in the problem, we notice that:

- Before the car stops, the book is moving with constant velocity (25 mph) together with the car

- When the car stops, there are no external forces acting on the book, which is free to continue its motion: so, the book will continue moving at 25 mph forward, due to its inertia. The book will be eventually stopped when it hits the floor (because the floor applies an unbalanced force on it).

Learn more about inertia:

brainly.com/question/2286502

brainly.com/question/691705

#LearnwithBrainly

4 0
2 years ago
Read 2 more answers
your schools choir consisting of 10 singers gives a performance producing a sound intensity of 100 dB. At a point in the perform
laila [671]
There are two units of sound: intensity and in decibels. Decibels are not additive, you must convert it first to units of intensity (W/m²) using this formula:

dB = 10 log(I/10⁻¹²)

A.   100 dB = 10 log(I/10⁻¹²)
       Solving for I,
       I = 0.01 W/m²

      90 dB = 10 log(I/10⁻¹²)
      Solving for I,
       I = 0.001

Ratio = 0.01/0.001 = 10
<em>Thus,the choir is 10 times more intense than the soloist.</em>

B. Since there are 90 singers, there would be 9 groups of 10-person choir that produces 100 dB or 0.01 W/m². The total intensity would be

Total intensity = 0.01 W/m² (original choir) + 0.001 W/m² (soloist) + 10(0.01 W/m²) (additional 90 singers) = 0.111 W/m²
dB = 10 log(0.111/10⁻¹²) = <em>110.45 dB</em>

C. Rock concert:
    120 dB = 10 log(I/10⁻¹²)
    Solving for I,
    I = 1 W/m²

Ratio = 1/0.111 = 9
<em>Therefore, the rock concert is 9 times more intense than the choir concert.</em>


7 0
3 years ago
On Earth, a scale shows that you weigh 490 N. What is your mass?
vesna_86 [32]
A 50 kg

490N = m(kg) *9.8(m/s^2)=>m=490/9.8 = 50kg
5 0
2 years ago
Read 2 more answers
Other questions:
  • What is the weight of a 1-kilogram brick resting on a table?
    7·1 answer
  • If a man travels from 0m to 5m then back to -3m, all in four seconds, what is the mans displacement?
    7·1 answer
  • If you double the velocity of an object, you increase its kinetic energy by a factor of what ?
    10·1 answer
  • The Calvin cycle can only happen in the dark. <br> a. True<br> b. False
    11·1 answer
  • A force gives a 2.0 kg mass an acceleration of 5.0 m/s2 on a level surface. What is the force applied to the mass?
    8·1 answer
  • How is the energy of a photon related to its wavelength?
    10·1 answer
  • A rotating light is located 13 feet from a wall. The light completes one rotation every 3 seconds. Find the rate at which the li
    9·1 answer
  • Scott is making a chart to show the difference between chemical reactions and nuclear reactions. Which part of his chart is inco
    15·1 answer
  • If the net force acting on an object is 0 N, you can be sure thr forces acting on the object are,
    14·1 answer
  • What happens to the Force due to gravity between 2 masses if one
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!