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Reika [66]
4 years ago
6

All waves are produced by something that is doing this

Physics
1 answer:
steposvetlana [31]4 years ago
5 0

The moon revolving around the earth, creating a gravitational pull.

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Which of the following are neutral particles?<br> Protons<br> Neutrons<br> Electrons<br> Atoms
emmasim [6.3K]

Answer:

i believe its an atom

Explanation:

7 0
3 years ago
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Anissa slides down a playground slide sloped at 25o. The coefficient of kinetic friction between Anissa and the slide is 0.15. I
Keith_Richards [23]

Answer:5.62 m/s

Explanation:

Given

Inclination \theta =25^{\circ}

Coefficient of kinetic Friction \mu _k=0.15

mass of Anissa's m=55 kg

time interval t=2 s

acceleration of the system

a=g\sin \theta -\mu _kg\cos \theta

a=9.8\sin (25)-0.15\cdot 9.8\cos (25)

a=4.14-1.33=2.81 m/s^2

v=u+at

where v=Final Velocity

u=Initial Velocity

a=acceleration of system

t=time

v=0+2.81\times 2

v=5.62 m/s

4 0
3 years ago
HELP!!! I HAVE NO IDEA!!!!!!!!!!!!!
LekaFEV [45]

Answer:

Explanation:

The engine should create the same force

1) F = ma

  F = M(½a)

therefore

ma = ½Ma

 m = ½M

 M = 2m

 M = 2(0.8)

 M = 1.6 kg

2) Unbalanced forces

 a. Two people pulling on the same side of a wheelbarrow

 c. Two people of opposite sides of a big tire. One pushes the tire and one pulls it with equal force

3) b. The force of friction on the object is different if it is stationary or not

8 0
3 years ago
What are the correct units for energy and work
Scrat [10]

Answer:

Newton (N)

Explanation:

7 0
3 years ago
A sphere of radius R has charge Q. The electric field strength at distance r &gt; R is Ei.
kompoz [17]

Answer:

A. Ef/ Ei = 1/2

B. EF/ Ei = 1

C Ef / Ei = 4

Explanation:

To solve this we apply Coulomb's law which States that

E = Kq / r^2

Where

q = charge r = straight line distance from q to the point in question and

K = Coulomb's constant

Then

Ei = K Q / r^2

So

A) If Q is halved then

Ef = K Q / (2 r^2)

Ef/Ei = 1/2

B) If R is halved, the value of the E-f

at a distance r remains unchanged. So

Ef/Ei = 1

C) if r is now r/2 then

Ef = K Q / (r/2)^2 = K Q / r^2/4 = 4 K Q / r^2

Ef / Ei = 4

5 0
4 years ago
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