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Rus_ich [418]
3 years ago
7

A compass can be used to determine the presence of charge flow in a circuit.

Physics
1 answer:
Sveta_85 [38]3 years ago
6 0

Answer:

False

Explanation:

A compass can be used to determine relative direction but not absolute direction.

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Physics Homework
katrin2010 [14]

Explanation:

a. Average speed = distance / time

= 100 m / 70 s

= 1.43 m/s

b. Average displacement = displacement / time

= 0 m / 70 s

= 0 m/s

Distance is the length of the path traveled.  Displacement is the difference between the final position and initial position.

4 0
4 years ago
Why did Thomson observe two glowing dots when he put neon gas into a<br> cathode-ray tube?
Artist 52 [7]

Answer:

Electrons accelerated to high velocities travel in straight lines through an empty cathode ray tube and strike the glass wall of the tube, causing excited atoms to fluoresce or glow.

7 0
3 years ago
ANSWER ASAP
Stella [2.4K]
The weight of the plane is  (mass) x (acceleration of gravity).
Neither of these changes when the plane rises from the ground.
Its weight on the ground is equal to (the same as) its weight in the air.
8 0
3 years ago
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A cannon ball is shot horizontally off a 37.0 m cliff and lands a distance of 18.5 m
4vir4ik [10]

Answer:

vₓ = 6.73 m/s

Explanation:

  • Assuming no other external influences than gravity, in the horizontal direction (which we make to coincide with the x- axis) , speed is constant, so, applying the definition of average velocity, we can write the following equation:

       v_{x} = \frac{\Delta x}{\Delta t} (1)

  • Now, in the vertical direction (coincident with the y- axis) , as both movements are independent each other, initial velocity is zero, so we can write the following equation for the vertical displacement:

       \Delta h = \frac{1}{2} * g * t^{2} (2)

  • where Δh = -37.0 m , g = -9.8 m/s2
  • Solving (2) for t, we get:

       t = \sqrt{\frac{2*\Delta h}{g} } =\sqrt{\frac{2*37.0m}{9.8m/s2}} = 2.75 s (3)    

  • Taking t₀ = 0, ⇒ Δt = t
  • Replacing (3) in (1), we get:

       v_{x} = \frac{\Delta x}{\Delta t} = \frac{x}{t}  = \frac{18.5m}{2.75s} = 6.73 m/s

  • As the horizontal velocity is constant, the initial horizontal velocity is just the average one, i.e., 6.73 m/s.
5 0
3 years ago
I forgot how to breath
Sauron [17]

Answer:

1-steal an inhaler 2-use it 3-your good

orrrr

1-swallow air(preferably air from space)

8 0
4 years ago
Read 2 more answers
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