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
rjkz [21]
3 years ago
13

PART 2 OF ENERGY AND FORCES UNIT TEST

Physics
1 answer:
katrin2010 [14]3 years ago
4 0

Answer:

1. at least two charged interacting parts

2. from the electric fields of charged subatomic particles

3 an arrow released from the bow

4Electrical fields of charged particles interact, bonding those with opposite charges.

5 the interaction of the electric fields of protons and electrons

6 The energy stored in the system increases.

7 Kinetic energy increases because the magnets move in the direction of the field.

8 Iron pieces accelerate toward the magnet, and the energy stored in the system decreases.

9  

The energy stored in the field decreases because the magnet moves in the direction of the field.

10 The energy stored increases and then decreases.

11 The wire was not connected to the source.

12  The electromagnet will become more powerful.

the rest are written, hope this helps (:

You might be interested in
What do wind and moving water have in common? Select one: They both have electrical energy They both have elastic potential ener
ozzi
They both have kinetic energy because they are both moving and have force.
Hope this helped! :)

7 0
3 years ago
To make a given sound seem twice as loud, how should a musician change the intensity of the sound?
Serhud [2]

Answer:

C. Quadruple the intensity

Explanation:

The intensity of the sound is proportional to square of amplitude of the sound.

I ∝ A²

\frac{I_1}{A_1^2} = \frac{I_2}{A_2^2}\\\\I_2 = \frac{I_1A_2^2}{A_1^2}

When the given sound is twice loud as the initial value, then the new amplitude is twice the former.

A₂ = 2A₁

I_2 = \frac{I_1A_2^2}{A_1^2} \\\\I_2 = \frac{I_1(2A_1)^2}{A_1^2} \\\\I_2 = \frac{4I_1A_1^2}{A_1^2}\\\\ I_2 = 4I_1

Thus, to make a given sound seem twice as loud, the musician should Quadruple the intensity

3 0
3 years ago
5. What is the frequency of a sound wave when the speed of the sound is 340 m/s and has a wavelength of 1.21 m?​
LekaFEV [45]

Explanation:

v = f × /\

340 = 1.21f

f = 280.99Hz

3 0
3 years ago
POSSIBLE POINTS: 1.92
gogolik [260]

Answer:

jnfal4u4ryhfsbjls5

Explanation:

duehdakjweyedufkbshegygfr

7 0
3 years ago
What two properties show that the drink is a fluid ( girl drinking fruit punch out of a clear glass cup with a straw.)
Ainat [17]
It takes the shape of the cup and it can be sucked through a straw 
3 0
3 years ago
Read 2 more answers
Other questions:
  • Sharks are generally negatively buoyant; the upward buoyant force is less than the weight force. This is one reason sharks tend
    15·1 answer
  • A 100-turn coil with an average radius of 0.04 m is placed in a uniform magnetic field so that ϕ = 60°. The strength of the fiel
    11·2 answers
  • Guys I just need this question, cmon help me
    5·1 answer
  • Water is a compound because it is what?Water is a compound because it
    12·2 answers
  • Is this true or false the kinetic energy of a freely falling object decreases as it begins to fall
    14·2 answers
  • A ball is dropped from rest at point O (height unknown). After falling for some time, it passes by a window of height 3 m and it
    7·1 answer
  • A stationary block of mass 35 Kg is suspended on a string.What is the tension in the string ?( Neglect the mass of the string)
    11·1 answer
  • Different between weight and mass​
    15·2 answers
  • What is the change in weight of a hollow cylinder of height 8 cm and radius 3 cm when the air is pumped out of it
    12·1 answer
  • How long does it take for earth to complete one full rotation?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!