Why is it so good for scientists to be skeptical

1 answer:

7 0

Its good for a scientist to be skeptical because they dont willingly accept new ideas without thoroughly going over the research themselves and attempting to disprove a theory. skeptical scientists often reveal new information through doing their own examinations of a concept, which is why they are valuable scientists

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Most earthquakes happen near ___ boundaries

kodGreya [7K]

Answer:

around the ring of fire boundaries

Explanation:

5 0

3 years ago

A 5000-kg freight car crashes into a 10,000-kg freight car at rest. They couple upon collision and move with a speed of 2 m/s. W

nirvana33 [79]

Answer:

6 m/s

Explanation:

mass of moving car m1=5000 kg

initial velocity of moving car vi1=?

mass of car at rest = m2=10000 kg

initial velocity of car at rest = vi2=0

final velcoities of both cars after collision = vf1=vf2= 2m/s

using conservation of momentum rule

m1vi1+m2vi2=m1vf1+m2vf2

putting values

==> 5000 × vi1 + 1000 × 0 = 5000 × 2 + 10000 × 2

==> 5000 ×vi1 = 2 × 15000

==> vi1 = 2 × 15000 ÷ 5000

==> vi1= 2×3=6 m/s

8 0

3 years ago

How far apart would you have to place the poles of a 1. 5 v battery to achieve the same electric field?

Zarrin [17]

To place the poles of a 1. 5 v battery to achieve the same electric field is 1.5×10−2 m

The potential difference is related to the electric field by:

∆V=Ed

where,

∆V is the potential difference

E is the electric field

d is the distance

what is potential difference?

The difference in potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other.

We want to know the distance the detectors have to be placed in order to achieve an electric field of

E=1v/cm=100v/cm

when connected to a battery with potential difference

∆v=1.5v

Solving the equation,we find

$d = \frac{ \:Δv}{e}$