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WITCHER [35]
3 years ago
5

Are aliens real in 2020

Physics
2 answers:
Eddi Din [679]3 years ago
8 0

Answer:

i believe that they are or there's something out there

Explanation:

:)

e-lub [12.9K]3 years ago
6 0
Yes, they look exactly like newborn babies
You might be interested in
Why would you wanna know a cure for all sickness.?
Alchen [17]

Answer:

because if someone close to u gets sick you would know how to cure it

4 0
2 years ago
A 5.0-nC point charge is embedded at the center of a nonconducting sphere (radius = 2.0 cm) which has a charge of -8.0 nC distri
Igoryamba

Answer:

3.6 × 10⁵ N/C = 360 kN/C

Explanation:

Let R = 2.0 cm be the radius of the sphere and q = -8.0 nC be the charge in it. Let q₁ be the charge at radius r = 1.0 cm. Since the charge is uniformly distributed, the volume charge density is constant. So, q/4πR³ = q₁/4πr³

q₁ = q(r/R)³. The electric field due to q₁ at r is E₁ = kq₁/r² = kq(r/R)³/r² = kqr/R³

The electric field due to the point charge q₂ = 5.0 nC is E₂ = kq₂/r².

So, the magnitude of the total electric field at r = 1.0 cm is

E = E₁ + E₂ = kqr/R³ + kq₂/r² = k(qr/R³ + q₂/r²)

E = 9 × 10⁹(-8 × 10⁻⁹ C × 1 × 10⁻² m/(2 × 10⁻² m)³ + 5 × 10⁻⁹ C/(1 × 10⁻² m)²)

E = 9 × 10⁹(-1 × 10⁻⁵ + 5 × 10⁻⁵)

E = 9 × 10⁹(4 × 10⁻⁵)

E = 36 × 10⁴ N/C = 3.6 × 10⁵ N/C = 360 kN/C

6 0
3 years ago
Consider an NACA 2412 airfoil with a 2-m chord in an airstream with a velocity of 50 m/s at standard sea level conditions. If th
Akimi4 [234]

Answer:

4°

Explanation:

Given,

chord in the airstream, c = 2 m

speed, v = 50 m/s

lift per unit span = 1353 N/m

density of air, ρ = 1.225 kg/m³

Lift,L = c_L \times \dfrac{1}{2} \rho v^2(c \times s)

\dfrac{L}{s}=c_L \times \dfrac{1}{2} \rho v^2\times c

50=c_L \times 0.5\times 1.225\times 50^2\times 2

c_L = 0.44

From the plot of c_L and angle of attack

Angle of attack is equal to 4°

8 0
3 years ago
A center lane with solid and broken yellow lines that is used by vehicles making left turns in both directions is called a:
pishuonlain [190]
Left turn lane

Left turn lanes are used when vehicles are turning left. It is mandatory for a vehicle to come inside the lane completely and then wait for the traffic to clear before making the turn. The vehicle is not allowed to be half inside the lane and half outside, blocking the traffic and producing dangerous driving conditions.
7 0
2 years ago
Which of these would best describe the outcome of increasing the kinetic energy of the molecules in the above picture? A) The te
VikaD [51]

Answer: Option (A) is the correct answer.

Explanation:

Relation between kinetic energy and temperature is as follows.

                K.E \propto \frac{3}{2}kT

As, kinetic energy is directly proportional to temperature. So, when there will be increase in temperature then there will also occur increase in kinetic energy of the particles of a substance.

And, when gas particles move slowly then it means kinetic energy of gas particles is very low. It also implies that temperature is low.

Thus, we can conclude that temperature will increase best describes the outcome of increasing the kinetic energy of the molecules in the above picture.

8 0
3 years ago
Read 2 more answers
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