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3 years ago

What is the minimum amount of data points an experiment should gather?

Physics

1 answer:

nydimaria [60]3 years ago

7 0

The answer is "Three".

At the point when individuals take studies for factual purposes or when the Statistics Agency comes around and gets everyone's data, data from one individual is one information point for them. Toward the finish of its exploration or overview, the organization will have accumulated numerous bits of data from numerous individuals. One piece of information equals with one data point.

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Determine the shortest frequency of light required to remove an electron from a sample of ti metal if the binding energy of tita

Mama L [17]

The correct answer is: shortest frequency = 7.86*10^15 $s^{-1}$

Explanation:
The binding energy of titanium = 3.14*10^6 J/mol
The energy required to remove an electron = (3.14*10^6) /(6.023*10^23) = 5.213*10^-18 J
Where 6.023*10^23 = Avagadro number

Since E = hv

Frequency = v = E/h
E = Energy = 5.213*10^-18
h = Planck's constant = 6.626*10^-34
v = (5.213*10^-18) / 6.626*10^-34)
v = 7.86*10^15 $s^{-1}$ (shortest frequency)

7 0

4 years ago

8. What current flows through a 1.15 kW electric fire at a potential difference of

Vilka [71]

Answer:

I = 5[amp]

Explanation:

Electrical power is defined as the product of voltage by current.

$P=V*I$

where:

P = power = 1150 [W]

V = voltage = 230 [V]

I = current [amp]

Now replacing:

$1150=230*I\\I=1150/230\\I=5[amp]$

A 15 [amp] fuse must be used. Always the fuse must be larger than the operating current, to protect the equipment from very high currents. above 15 [amp]

4 0

3 years ago

What is general education

ddd [48]

Please follow me and mark me as brainiest

7 0

3 years ago

A horizontal spring with spring constant 750 N/m is attached to a wall. An athlete presses against the free end of the spring, c

ANTONII [103]

Answer:

37.5 N Hard

Explanation:

Hook's law: The force applied to an elastic material is directly proportional to the extension provided the elastic limit of the material is not exceeded.

Using the expression for hook's law,

F = ke.............. Equation 1

F = Force of the athlete, k = force constant of the spring, e = extension/compression of the spring.

Given: k = 750 N/m, e = 5.0 cm = 0.05 m

Substitute into equation 1

F = 750(0.05)

F = 37.5 N

Hence the athlete is pushing 37.5 N hard

4 0

3 years ago

Read 2 more answers

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average forc

Natali5045456 [20]

Answer:

Explanation:

Step one:

given data

mass of bullet= 0.02kg

speed v=700m/s

time taken =1.5ms= 0.0015 seconds

Step two:

we know that from the first law

F=ma-----1 first law of motion

also, we know that

a=v/t----2

put a=v/t in equation 1 we have

F=mv/t

Step three:

substitute our given data to find force

F=0.02*700/0.0015

F=14/0.0015

F=9333.33N

F=9.3kN

The average force exerted is 9.3kN

7 0

3 years ago