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Iteru [2.4K]
3 years ago
7

What is the wavelength of radar waves with the frequency of 6.0 x 10 ^10 Hz?

Physics
1 answer:
Serjik [45]3 years ago
8 0

Yes yes multiply hurry up

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A particle travels along the x-axis in such a way that its acceleration at time t is a(t) = t + t2. if it starts at the origin w
Olegator [25]
The acceleration of the particle as a function of time t is
a(t) = t + t^2
The velocity of the particle at time t is the integral of the acceleration:
v(t) =  \int {a(t)} \, dt =  \frac{t^2}{2} +  \frac{t^3}{3}  + C
where the constant C can be found by requiring that the velocity at time t=0 is v=3:
v(0) = 3
and we find C=v_0=3
so the velocity is
v(t)=3+ \frac{t^2}{2}+ \frac{t^3}{3}

The position of the particle at time t is the integral of the velocity:
x(t)=\int {v(t) } \,dt = 3t +  \frac{t^3}{6}+ \frac{t^4}{12}   +D
where D can be found by requiring that the initial position at time t=0 is zero:
x(0)=0
from which we find D=0, so 
 x(t)=3t + \frac{t^3}{6}+ \frac{t^4}{12} 

To solve the problem, now we just have to substitute t=5 into x(t) and v(t) to find the position and the velocity of the particle at t=5.

The position is:
x(5)=3(5) +  \frac{5^3}{6}+ \frac{5^4}{12}=87.92
and the velocity is:
v(5) = 3+ \frac{5^2}{2}+ \frac{5^3}{3}=57.17
6 0
3 years ago
A Venturi tube may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gas
leonid [27]

Answer

given,

flow rate = p = 660 kg/m³

outer radius = 2.8 cm

P₁ - P₂ = 1.20 k Pa

inlet radius = 1.40 cm

using continuity equation

 A₁ v₁ = A₂ v₂

 π r₁² v₁ = π r₁² v₂

 v_1= \dfrac{r_1^2}{r_2^2} v_2

 v_1= \dfrac{1.4^2}{2.8^2} v_2

 v_1= 0.25 v_2

Applying Bernoulli's equation

 \Delta P = \dfrac{1}{2}\rho (v_2^2-v_1^2)

 \Delta P = \dfrac{1}{2}\rho (v_2^2-(0.25 v_2)^2)

 \Delta P = \dfrac{1}{2}\rho v_2^2 (1 - 0.0625)

 v_2=\sqrt{\dfrac{2\Delta P}{\rho(1 - 0.0625)}}

 v_2=\sqrt{\dfrac{2\times 1200}{660 \times(1 - 0.0625)}}

       v₂ = 1.97 m/s

b) fluid flow rate

Q = A₂ V₂

Q = π (0.014)²  x 1.97

Q = 1.21 x 10⁻³ m³/s

5 0
3 years ago
The force F is expressed in terms of the mass “m” and acceleration “a” according to the
LekaFEV [45]

Answer:

F = [M] × [L1 T-2] = M1 L1 T-2.

Explanation:

Therefore, Force is dimensionally represented as M1 L1 T-2.

5 0
3 years ago
Please help me on this!
aalyn [17]

Answer:

erosion

Explanation:

grows into the eirth each year. the atmosphere and how the worldchanges every year

5 0
2 years ago
Two small space probes have been slowed to 10m/s as they approach the moon from the same direction. Probe 1 has a mass of 86kg a
bulgar [2K]

Answer:

B

Explanation:

B

4 0
3 years ago
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