Answer:
The most precise is 0.0034 m ⇒ 1st answer
Explanation:
<em>Lets revise the meaning of precise</em>
Precision is referred as the closeness of two measurements to one
another.
Highest number with significant digit is the most precise
Ex: <em>Highest significant </em>of optical instrument is the Wavelength of visible (red)
light = 0.00006 cm
Hence the <em><u>most precise</u></em> device for measuring length is the given optical
instrument
The difference between accuracy and precise
<em>Accuracy</em> is how close a value is to its true value
<em>Precision</em> is how repeatable a measurement is
We have three numbers
0.0034 m, 45.6 m, and 1234 m
The least precise is 1234 m
The most precise is 0.0034 m
As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. ... Mechanical and electromagnetic waves with long wavelengths contain less energy than waves with short wavelengths.
1. Bowling ball sitting in the rack:
kinetic energy = 0, because the ball is not in motion - we have only potential energy in this case
2. Bowling ball knocking pins down:
at the moment of knocking kinetic energy is increased, while the potential energy is decreased
Answer:
Air resistance
Explanation:
Despite the law of conservation of energy stating that energy can neither be created nor destroyed but can only be transformed from one state to another, some energy is usually lost in the process of transformation and its majorly attributed to frictional loss. Friction opposes normal movement hence in air, air resistance tends to reduce the original energy compared to the initial. That is why the final energy in this case is slightly less than the original energy.
Answer:
Explanation:
<u>Instant Velocity
</u>
Given the position as a function of time x(t), the instant velocity is the derivative of the function:
We are given the position as
The derivative of x is
A) Let's compute v(0)
B)
C)
D)
