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MariettaO [177]
3 years ago
5

Dalton’s theory was identified using light microscope images of atoms. the experimental results of other scientists. water vapor

and air experiments.
Physics
2 answers:
dusya [7]3 years ago
8 0

Water vapor and air experiments

joja [24]3 years ago
6 0

Answer:

C

Explanation:

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A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 25.5 kg.
Svetllana [295]

Answer:

72.75 kg m^2

Explanation:

initial angular velocity, ω = 35 rpm

final angular velocity, ω' =  19 rpm

mass of child, m = 15.5 kg

distance from the centre, d = 1.55 m

Let the moment of inertia of the merry go round is I.

Use the concept of conservation of angular momentum

I ω = I' ω'

where I' be the moment of inertia of merry go round and child

I x 35 = ( I + md^2) ω'

I x 35 = ( I + 25.5 x 1.55 x 1.55) x 19

35 I = 19 I + 1164

16 I = 1164

I = 72.75 kg m^2

Thus, the moment of inertia of the merry go round is 72.75 kg m^2.

5 0
3 years ago
Felix expends 100 W of power to clomb 10 meters in 20 seconds how much force does he exert
yulyashka [42]

Answer:

200 N

Explanation:

Power = work / time

Work = force × distance

Therefore:

Power = force × distance / time

100 W = F × 10 m / 20 s

F = 200 N

He exerted 200 N.

3 0
3 years ago
Read 2 more answers
Are stairs a type of inclined plane?
-BARSIC- [3]

Answer:

Inclined planes are simple machines used to make work easier. Ramps, ladders, and staircases are all inclined planes.

Explanation:

3 0
2 years ago
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If a negatively charged particle enters a region of uniform magnetic field which is perpendicular to the particle's velocity, wi
lys-0071 [83]

Answer:

Same

Explanation:

While moving through a magnetic field in a direction perpendicular to a B-field, a continuous force experienced by a charged particle. If this magnetic field remains uniform, the force exerted also remains same and hence the velocity with which the particle is moving remains same. However, the particle is forced to move on a curved path until it forms a complete circle.

Hence, the kinetic energy remains the same because the speed is same

3 0
3 years ago
Look at the divisions between 2 and 4. What level of precision does this stopwatch have based on the divisions marked on its fac
klemol [59]

Answer:

10ths of a second

Explanation:

Because I just did it

8 0
3 years ago
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