What is the term for hardening or curing the sealant or composite material by exposing the material to a curing light?
1 answer:
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Answer:
Explanation:
find the solution below
(b) The Planck time is given as
T=
=5.39×
of the same order of magnitude as the ultra hot epoch
<h3>What exactly is Planck Time?</h3>- The Planck time is the fundamental unit of time in the Planck Unit system. It has the following worth:
=5.39×
- Measurements of time in SI units are made in seconds (usually given the symbol s). Although measuring the time it takes an athlete to sprint 100 meters or the length of a phone call in seconds is convenient in everyday life, it becomes less practical when discussing the sequence of events that occurred in the very early Universe (such as the onset of inflation that occurred 10-35s after the Big Bang).
- The entire geometry of spacetime predicted by general relativity breaks down at this scale. As a result, to describe the laws of physics on such scales, an as-yet undiscovered theory combining general relativity and quantum mechanics is required. As a result, our current descriptions of the Universe's early evolution begin at
seconds after the Big Bang.
To learn more about Planck Time refer to
#SPJ4
Answer:
Dₓ = -155 sin 23° i + 0 j
Explanation:
The diagram showing the vector has been attached to this response.
As shown in the diagram,
The vector D has an x-component (also called horizontal component) of -D sinθ i. i.e
Dₓ = -D sin θ i [The negative sign shows that D lies in the negative x direction]
Where;
D = magnitude of D = 155m
θ = direction of D = 23°
Therefore;
Dₓ = -155 sin 23° i
Since Dₓ represents the x component, its unit vector, j component has a value of 0.
Therefore, Dₓ can be written in terms of D, θ and the unit vectors i and j as follows;
Dₓ = -155 sin 23° i + 0 j
