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3 years ago

What was Operation Overlord?

1 answer:

8 0

Operation Overlord was the code name for the Allied invasion of Normandy. The correct option in regards to the given question is option "a".

The German forces surrendered en masse to U.S. and British forces rather than to the Soviets towards the end of the war because the Germans knew that the Americans and the British would treat them as per the Geneva Convention, while the Russians would not care because the Germans had previously treated the Russians in a merciless manner. This made the Germans not surrender to the Russians although the Germans knew that there might be some cases of atrocities in the hands of the British and Americans as well.

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What is the smallest distance between the speakers for which the interference of the sound waves is destructive?

ankoles [38]

Answer:Half the wavelength

Explanation: Destructive Interencce is a type of wave superimposition which involves opposing waves, in this case the Trouph of one wave aligns with the crest of the opposing wave. In this case the smallest distance for the maximum destructive wave to take place is have the wavelength,if the wavelength is one lambda the smallest wavelength for the maximum destructive wave to occur is half the wavelength.

7 0

4 years ago

Explain why it is better to use a cable with a low resistance than to use a cable with a high

blondinia [14]

Explanation:

The primary reason for this is efficiency. In most applications, a lower resistance means less power is converted to heat and lost to the surrounding environment and more of the supplied power gets to its intended destination.

3 0

2 years ago

Would you rather be beautiful but you cant look at yourself or be ugly and no one else can see you

WARRIOR [948]

Whats the point of being either of them?

If your Beautiful, you cant look at yourself...

And if your ugly, no one else can see you...

I'd rather not exist LOL XD

6 0

4 years ago

An astronaut circling the earth at an altitude of 400 km is horrified to discover that a cloud of space debris is moving in the

elena-14-01-66 [18.8K]

One of the essential concepts to solve this problem is the utilization of the equations of centripetal and gravitational force.

From them it will be possible to find the speed of the body with which the estimated time can be calculated through the kinematic equations of motion. At the same time for the calculation of this speed it is necessary to clarify that this will remain twice the ship, because as we know by relativity, when moving in the same magnitude but in the opposite direction, with respect to the ship the debris will be double speed.

By equilibrium the centrifugal force and the gravitational force are equal therefore

$F_c = F_g$

$\frac{mv^2_{orbit}}{r} = \frac{GMm}{r^2}$

Where

m = mass spacecraft

v = velocity

G = Gravitational Universal Constant

M = Mass of earth

$r \rightarrow R+h \Rightarrow$ Radius of earth and orbit

Re-arrange to find the velocity

$\frac{mv^2_{orbit}}{r} = \frac{GMm}{r^2}$

$\frac{v^2_{orbit}}{r} = \frac{GM}{r^2}$

$v^2_{orbit}=\frac{GM}{r}$

$v_{orbit} = \sqrt{\frac{GM}{r}}$

$v_{orbit} = \sqrt{\frac{GM}{R+h}}$

Replacing with our values we have

$v_{orbit} = \sqrt{\frac{(6.67*10^{-11})(5.98*10^{24})}{6.37*10^6+0.4*10^6}}$

$v_{orbit} = 7676m/s$

From the cinematic equations of motion we have to

$t = \frac{d}{2v_{orbit}} \rightarrow$ Remember that the speed is double for the counter-direction of the trajectories.

Replacing

$t = \frac{29000m}{7676m/s}$

$t = 3.778s$

Therefore the time required is 3.778s

4 0

3 years ago

Help me find the natural logarithum of csch^-1 ((-1)/(2 sqrt(30)))

SVEN [57.7K]

The inverse hyperbolic cosecant of anything is a negative number.

In particular, csch⁻¹ [ (-1)/(2√30) ] = csch⁻¹ (≈ -0.0913) = ≈ -3.089

Whatever it is, negative numbers don't have logarithms.

3 0

4 years ago