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2 years ago

I) A sag vertical curve is to be designed to join a 4% grade to a 2% grade. If the design

Engineering

1 answer:

Burka [1]2 years ago

4 0

Answer:

=4/5 because I'm not going to go back in a year meaning that they are you are

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What is the name of the device fitted underneath the rear bumper on some cars for either purposes of appearance or to increase a

Mariulka [41]

Answer:

Protruding feelers

Explanation:

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2 years ago

On a date when the earth was 147.4x106 km from the sun, a spacecraft parked in a 200 km altitude circular earth orbit was launch

rewona [7]

Answer:

ΔV = $=v_{p} -v_{c} = 3.337 \frac{km}{s}$

Explanation:

Distance of earth from sun = $R_{2} = 147.4 \times 106 Km$

Spacecraft perihelion = $R_{2} = 120\times106Km$

gravitational parameters are now given as

$\mu_{sun} = 132.7\times 10^{9}$

$\mu_{earth} = 398600$

radius of earth = 6378 Km

Heliocentric spacecraft velocity at earth sphere of influence =

$V_{D}^{v} =\sqrt{2\mu_{sun}} \sqrt{\frac{R_{2} }{R_{1}(R_{1} +R_{2} ) } }$

$V_{D}^{v} =28.43\frac{km}{s}$

Heliocentric velocity of earth = $v_{earth} = 30.06\frac{km}{sec}$

$V_{infinity}= v_{earth}-V_{D}^{v} =30.06-28.43=1.57g\frac{km}{s}$

assume

$r_{p} =r_{earth} +r_{altitude} =6378 + 200 = 6578Km$

Geometric spacecraft velocity of spacecraft at perigee of departure hyperbola

$v_{p}=\sqrt{v^{2} _{infinity}+\frac{2\mu_{earth} }{r_{p} } } = 11.12\frac{km}{s}$

geometric space craft velocity in its circular parking orbit

$v_{c}=\sqrt{\frac{\mu_{earth} }{r_{p} } } = 7.784 \frac{km}{s}$

ΔV = $=v_{p} -v_{c} = 3.337 \frac{km}{s}$

7 0

4 years ago

What is a compound gear used for creating the most torque

Scrat [10]

In short, a lower gear produces more torque at the wheel, as well as faster acceleration and lower vehicle speed. Higher gears result in less torque at the wheel, as well as slower acceleration and higher car speed.

<h3>What is torque?</h3>

TORQUE (Terascale Open-source Resource and QUEue Manager) is a distributed resource manager that manages batch jobs and distributed compute nodes.

Torque is a force that can cause an object to rotate around an axis. In the same way that force causes an object to accelerate in linear kinematics, torque causes an object to acquire angular acceleration.

Torque is measured as a vector quantity. Torque is defined as a twisting or turning force that causes rotation around an axis, which could be a center of mass or a fixed point.