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3 years ago

How do you find average velocity during free fall?

Physics

2 answers:

Genrish500 [490]3 years ago

6 0

The sum of the initial and final velocity divided by 2.

Gekata [30.6K]3 years ago

6 0

- 400 all over 5 minus 0 which is negative 400 minus 5 which is going to be negative 80 feet perMore

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What are all of the si units

mina [271]

Here you go

There are seven basic units in the SI system: the meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd).

Hope it helps you

Please mark me as Brainsliest

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3 years ago

1. first nuclear reactor

IRISSAK [1]

The correct matches are as follows:

1. first nuclear reactor
Fermi - an italian physicist who made the first nuclear reactor
2. 1/0 η
atomic mass 
3. decaying nuclei
fission - nuclear reaction from a heavy elements to lighter elements
4. number of neutrons and protons
neutron 
5. builds heavier elements
fusion - nuclear reaction from two or more elements to a heavier element
6. discovered radioactivity
Curie
7. unit of radiation
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7 0

3 years ago

Read 2 more answers

Two technicians are explaining the information on a repair order. Technician A says that the cause written on the repair order i

bezimeni [28]

Technician A and B are correct . Because according to technician A, the cause written on the repair order is a diagnosis. Here, by diagnosis, he means that the problem is identified after examining the device and hence the judgement is made.
And according to B, you have to write the cause of the problems in the device that have been identified and the concern measures, which is also kind of diagnosis.

So, option D is correct.

4 0

3 years ago

A small block of mass m on a horizontal frictionless surface is attached to a horizontal spring that has force constant k. The b

Rashid [163]

Answer:

$v_{max} = |d|\cdot \sqrt{\frac{k}{m} }$

Explanation:

The maximum speed of the block occurs when spring has no deformation, that is, there is no elastic potential energy, which can be remarked from appropriate application of the Principle of Energy Conservation:

$\frac{1}{2}\cdot k \cdot d^{2} = \frac{1}{2}\cdot m \cdot v^{2}$

$k \cdot d^{2} = m\cdot v^{2}$

$v_{max} = |d|\cdot \sqrt{\frac{k}{m} }$

5 0

3 years ago

What is the electric potential of a 2.2 µC charge at a distance of 6.3 m from the charge? Recall that Coulomb’s constant is k =

iren2701 [21]

1) The electric potential at a distance r from a single point charge is given by
$V(r) = k \frac{q}{r}$
where k is the Coulomb's constant, q is the charge and r is the distance from the charge.

The charge in this problem is
$q=2.2 \mu C =2.2 \cdot 10^{-6} C$
So the potential at distance $r=6.3 m$ is
$V=k \frac{q}{r}=(8.99 \cdot 10^9 Nm^2 C^{-2}) \frac{2.2 \cdot 10^{-6} C}{6.3 m}=3139 V$

2) By using the same formula as before, we can find the electric potential at distance r=99 m from the charge:
$V=k \frac{q}{r}=(8.99 \cdot 10^9 Nm^2C^{-2}) \frac{2.2 \cdot 10^{-6} C}{99 m}=198 V$

3 0

3 years ago

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