Explanation:
umm can you explain me what i have to answer
Answer:
Bluray
DVD
CD
Explanation:
Blu ray can hold 25gb per layer
Dvd can hold 4.7GB on a single layer
Cd can hold around 737 mb
Also, dvds can go up to 2 layers
Blu ray can go up to 4
Answer:
a) 1725.93 rpm
b) α = 3.012 rad/s²
Explanation:
The centrifugal acceleration is given by
a = v²/r
a = 1000 g = 1000 × 9.8 = 9800 m/s²
v = velocity = ?
r = radius of motion = 300 mm = 0.3 m
9800 = v²/0.3
v² = 2940
v = 54.22 m/s
v = rw
w = angular speed
54.22 = 0.3 × w
w = 54.22/0.3 = 180.74 rad/s
w = 2πf
f = frequency in rev/s
180.74 = 2πf
f = 28.77 rev/s
f = 1725.93 rpm
b) Using the equations of motion,
Since the centrifuge starts from rest,
w₀ = 0 rad/s
w = 180.74 rad/s (equivalent to the f = 1725.93 rpm)
t = 1 min = 60 s
α = ?
w = w₀ + αt
180.74 = 0 + 60α
α = 3.012 rad/s²
Drafting has been around a long time. We can safely assume that since we’ve had a tool in our hands, we’ve been describing plans and technical representations and doodling ideas. Let’s take a closer aspect at drafting and its advance from an under-the-radar part of the method to a very developed skill set.
<u>Explanation</u>
• 1970s – The beginning computer-aided design systems were included in the industry. Following the design engineers tried the learning curve of using CAD, their performance and productivity went through the roof. Over time, CAD software became affordable and more user-friendly, and its fame grew.
• 1990s – CAD software was expanded further to include 3-D characteristics, and quickly the technical designs of the past enhanced increasingly simulated and accessible to engineer.
• Present – The development of drafting has brought us to the present day, were using 3-D representations is the standard and the aim to generate full virtual prototypes.
Answer:
8 μC
Explanation:
By definition, current is the rate of change of charge, so we can write the following equation for current I:
I = ΔQ / Δt
As charge must be conserved, all the charge carried by the current must add to the charge on the plates of the capacitor, so we can finf this incremental charge as follows:
ΔQ = I* Δt (assuming that current remains constant during the charging process)
⇒ ΔQ = 3 A* 2 μsec = 3 coul/sec*2 μsec = 6 μC
As the initial charge must be conserved also, the magnitude of the net electric charge of the capacitor must be as follows:
Qnet = Q₀+ ΔQ = 2 μC + 6 μC = 8 μC