I am currently living in Brussels, Belgium, and have acquired a 3-year lease on an apartment. According to Belgian law, it is the landlord's responsibility to install smoke detectors in the unit, and she said that she would do it months ago but has never sent anyone to install them. I know that they are required by law, but what happens if she never installs them? Am I allowed to break the lease without a penalty if she fails to install them within a reasonable period of time?
It is locked because as Newtons first law of gravity states inertia, or something in motion stays in motion and vice versa. Inertia tries to drag the moon away from us and gravity keeps it close to us. When the force of inertia and gravity are equal, you have a terrestrial satellite.
It's a conservation of angular momentum thing. The smaller mass in a two body system becomes tidally locked with object with more mass long before the object with larger mass becomes tidally locked with the object of smaller mass. The Moon is slowing Earth's rotation rate by two milliseconds per day per century, on average, while the Moon is GAINING angular momentum by moving farther away from The Earth by 3.8 centimeters per year so that it's rate of revolution keeps speeding up because it's orbit is longer, but one orbit around the Earth still takes the same amount of time. Linear momentum mass times velocity, the velocity of the moon increases whole Felicity of Earth's rotation slows down so momentum is conserved in the Earth - Moon system. csep10.phys.utk.edu/astr161/lect/
i depends at what gear you r at the moment you reach the speed bump if u just started moving at the first gear or at the second gear because you are near the bump then u dont need to. but if you r at the 3rd or higher gear you will need to get to the second or first gear, thats because you need to slow down.
This is actually the case for nearly all moons of the solar system of any significant size. The reason for tidal locking is that gravity is significantly non-uniform across the target body (moon). The nearest part of the moon (not necessarily Earth's moon) is closer to its host planet than the farther side of the moon, and thus the nearest part of the moon experiences a greater gravitational force per unit mass. As the moon responds to the associated gravitational fields, the near side leads and the far side lags, and the entire moon stretches out as a whole. This distorts the shape of the moon along the line from planet to moon. If enabled to swing like a pendulum, which it initially will be, a distorted moon will have its equilibrium position when the stretching line is in line with the line to the planet. Torque from the gravitational forces on this warped moon will restore it to this equilibrium position. This is where the moon will settle once the initial rotational energy dissipates internally as tidal heating. Anytime the moon swings out of this equilibrium position, a new set of tidal stresses squish and squash it, converting the rotational energy into thermal energy. The ultimate ending is that the bodies become tidally locked to one another. Usually, the satellite body tidally locks LONG BEFORE the host body does. The sun is so far away that its gravitational forces are so uniform that the tidal influence is insignificant on the moon's motion. Earth's tidal influence is a lot more important.
