on April 24, 2022
How do you know if a geometric series converges?
Space and AstronomyIn fact, we can tell if an infinite geometric series converges based simply on the value of r. When |r| < 1, the series converges. When |r| ≥ 1, the series diverges. How do you tell if a geometric series is convergent or divergent? Geometric series: A geometric series is an infinite sum of a
on April 24, 2022
Why does the moon perfectly cover the sun?
Space and AstronomyEven though the Moon is much smaller than the Sun, because it is just the right distance away from Earth, the Moon can fully blocks the Sun’s light from Earth’s perspective. During a total solar eclipse, the Moon passes between Earth and the Sun. This completely blocks out the Sun’s light. Can moon fully cover
on April 24, 2022
How many tails do comets have?
Space and AstronomyTwo TypesA Comet Has Two Types of Tail The plasma tail comprises electrons and ions that are ionized by the sun’s ultraviolet radiation. The dust tail consists of micrometer-scale particles. The dust tail is wide and slightly bent because of the pressure of the light from the sun and the orbital action of the comet’s
on April 24, 2022
What is Mare made of?
Space and Astronomy(Together with the bright lunar highlands, they form the face of the “man in the moon.”) Samples of lunar rock and soil brought back by Apollo astronauts proved that the maria are composed of basalt formed from surface lava flows that later congealed. What is mare material? By definition, mare materials (1) form generally smooth
on April 24, 2022
What is positive and negative zero error in screw gauge?
Space and AstronomyIf the zero on the circular scale is below the reference line then the error is positive. If the zero on the reference line is above the reference line then the error is negative. Zero correction can be done by adding the same number of the zero error but with the opposite sign. What is
on April 24, 2022
What does a loose brake caliper sound like?
Space and AstronomyA loose caliper can cause vibrations when braking and an abnormal noise from the front end of your car. It is also common for drivers to feel a pulsation in their brake pedal while they are applying pressure. These are all signs that something might be wrong with your brakes. How do you know if
on April 24, 2022
What is scale of the universe?
Space and AstronomyWhat is the scale of the universe? Exhibit Observable Universe Our observable universe extends more than 10^26 meters in every direction. Exhibit Galaxies and Their Sizes We live in the Milky Way Galaxy, a disk-shaped galaxy roughly a hundred thousand light-years across and two thousand light-years… How small are we in the scale of the
on April 24, 2022
How do convex mirrors differ from regular mirrors?
Space and AstronomyThe ordinary flat-glass side mirror gives only a straight line of vision along the sides of the vehicle. The side-mounted convex mirror allows greater angular visibility to the sides.16 янв. 1986 What are the differences between convex mirror and concave mirror? What is the difference between Concave and Convex mirror? Spherical mirrors whose inner side
on April 24, 2022
How do you prove alternate exterior angles?
Space and AstronomyAlternate Exterior Angles Theorem: If two parallel lines are cut by a transversal, then the alternate exterior angles are congruent. The proof of this theorem is very similar to that of the Alternate Interior Angles Theorem. How do you prove the alternate exterior angles theorem? Video quote: We're given that they are parallel. And you
on April 24, 2022
What planet has 4 moons around it?
Space and Astronomyplanet Jupiter’sThe Galilean Moons The planet Jupiter’s four largest moons are called the Galilean satellites after Italian astronomer Galileo Galilei, who first observed them in 1610. Do any planets have 4 moons? There is no planet in the Solar System that has just four moons but Jupiter does have four major moons: Io. Europa. Callisto.