vₐ = 0.771 ft/s
vb = -1.54 ft/s
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<u>Explanation:</u>
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Block A:
F = ma
Nₐ = - 60 cos60° = 0
Nₐ = 30 lb
Fₐ = 0.1 X 30 = 3lb
Block B:
F = ma
Nb = - 40 cos30° = 0
Nb = 34.64lb
Fb = 0.1 X 34.64 = 3.464lb
T1 + ∑U = T2
(0 + 0) + 60 sin 60° |Δsₐ| - 40 sin 30° |Δsb| - 3|Δsₐ| - 3.464 |Δsb|
= 1/2 (60/32.2) vₐ² + 1/2 (40/32.2) vb²
and
2vₐ = - vb
On solving, we get
vₐ = 0.771 ft/s
vb = -1.54 ft/s
Answer:
None of these
Explanation:
There are different types of amplifiers, and each has different characteristics.
- Voltage amplifier needs high input and low output resistance.
- Current amplifier needs Low Input and High Output resistance.
- Trans-conductance amplifier Low Input and High Output resistance.
- Trans-Resistance amplifier requires High Input and Low output resistance.
Therefore, the correct answer is "None of these "
The classical motion for an oscillator that starts from rest at location x₀ is
x(t) = x₀ cos(ωt)
The probability that the particle is at a particular x at a particular time t
is given by ρ(x, t) = δ(x − x(t)), and we can perform the temporal average
to get the spatial density. Our natural time scale for the averaging is a half
cycle, take t = 0 → π/
ω
Thus,
ρ =
Limit is 0 to π/ω
We perform the change of variables to allow access to the δ, let y = x₀ cos(ωt) so that
ρ(x) =
Limit is x₀ to -x₀
Limit is -x₀ to x₀
This has as expected. Here the limit is -x₀ to x₀
The expectation value is 0 when the ρ(x) is symmetric, x ρ(x) is asymmetric and the limits of integration are asymmetric.
Answer:
cname record
Explanation:
A Canonical Name record (cname record) is a form of resource record that links one domain name to another.
It is commonly used when you are to use different services in the same IP address. For example, one can map www.brainlyquestion.com and www.brainlyquery.com to the DNS entry for www.brainlyenquiry.com (these are just examples, not actual websites). This makes it very effective in redirecting traffic from one domain name to another.
Answer:
Other formulas equivalent of I=E/R are:
- R = E/I
- E = IR
Where,
R = Resistance
E = Voltage
I = Current
Explanation:
For some conductors of power, the electric flow which will course through them is straightforwardly relative to the voltage concerned them. At the point when a microscopic perspective on Ohm's law is taken, it is found to rely on the way that the float speed of charges through the material is relative to the electric field in the conduit. The proportion of voltage to current is known as the resistance, and if the proportion is constant over a wide scope of voltages, the material is said to be an "ohmic" material. On the off chance that the material can be described by such a resistance, at that point the current can be anticipated from the relationship:
I = E/R
Electric Current = Voltage/Resistance
The voltage changes around any shut circle must total to zero. Regardless of what way you take through an electric circuit, in the event that you come back to your beginning stage you should gauge a similar voltage, compelling the net change around the circle to be zero. Since voltage is electric potential vitality per unit charge, the voltage law can be believed to be an outcome of preservation of vitality. The voltage law has extraordinary handy utility in the investigation of electric circuits. It is utilized related to the present law in many circuit investigation errands.
The electric current in amperes that streams into any intersection in an electric circuit is equivalent to the current which streams out. This can be believed to be only an announcement of preservation of charge. Since you don't lose any charge during the stream procedure around the circuit, the absolute current in any cross-segment of the circuit is the equivalent. Alongside the voltage law, the current law is a useful asset for the investigation of electric circuits.