2). The farther a planet is from the sun, the longer it takes to orbit the sun. Mercury ... 88 days. Earth ... 365 days. Jupiter ... 12 years. Neptune ... 165 years.
3). Mercury & Venus ... no moons Earth - 1 Mars - 2 Jupiter - more than 65
4). Mercury ... cratered, no atmosphere Venus ... cratered, thick cloudy atmosphere Mars ... dry, cratered, slight atmosphere, like 1% or Earth's
Jupiter, Saturn, Uranus, Neptune We can't see any surface. If any of them even HAS a surface, it's thousands of miles under a thick atmosphere of methane gas.
5). Missing from the list
6). Here's a list from the biggest planet to the smallest one. The numbers in parentheses are the radius of the planet -- half of the diameter:
Jupiter (69,911 km / 43,441 miles) – 1,120% the size of Earth Saturn (58,232 km / 36,184 miles) – 945% the size of Earth Uranus (25,362 km / 15,759 miles) – 400% the size of Earth Neptune (24,622 km / 15,299 miles) – 388% the size of Earth Earth (6,371 km / 3,959 miles) Venus (6,052 km / 3,761 miles) – 95% the size of Earth Mars (3,390 km / 2,460 miles) – 53% the size of Earth Mercury (2,440 km / 1,516 miles) – 38% the size of Earth
7). At least seven of the planets rotate in the same direction. There's something different about one of them ... it may be Uranus but I'm not sure. You'll have to look this up.
8). Saturn has the famous rings, that you can almost see with only binoculars. Spacecraft sent to observe the outer planets have detected very thin rings around Uranus and Neptune.
9). Included in #6.
10). I don't have complete info. Generally, the closer the planet is to the sun, the hotter it is. But there are a few exceptions. I think Venus ... the second one from the sun, is actually hotter than Mercury.
11). Just about every language has its own name for each planet.
12). "Terrestrial" means "like Earth" ("Terra"). The terrestrial planets are the ones that have solid surfaces and are made of rock. Mercury, Venus, Earth, and Mars.
13). "Jovian" means "like Jupiter". Either no solid surface, or very small, inside a big deep gas ball. Jupiter, Saturn, Uranus, Neptune.
If both bars are made of a good conductor, then their specific heat capacities must be different. If both are metals, specific heat capacities of different metals can vary by quite a bit, eg, both are in kJ/kgK, Potassium is 0.13, and Lithium is very high at 3.57 - both of these are quite good conductors.
If one of the bars is a good conductor and the other is a good insulator, then, after the surface application of heat, the temperatures at the surfaces are almost bound to be different. This is because the heat will be rapidly conducted into the body of the conducting bar, soon achieving a constant temperature throughout the bar. Whereas, with the insulator, the heat will tend to stay where it's put, heating the bar considerably over that area. As the heat slowly conducts into the bar, it will also start to cool from its surface, because it's so hot, and even if it has the same heat capacity as the other bar, which might be possible, it will eventually reach a lower, steady temperature throughout.
1) In a concave mirror parallel rays falling on it converges at F and 2F.
Explanation:
Spherical mirrors can be used for magnification of images. There are basically two types of spherical mirrors and they are converging mirror and diverging mirrors. The converging mirrors are also termed as concave mirrors and its basic work is to converge or combine light rays coming from a larger distance to a single point. Mostly the light beams falling parallel to the principle axis of the concave mirror will be acting as parallel rays. And when these parallel rays fall on the mirror, the converging point can be the focal point of the mirror.
Thus the location of converging point in concave mirrors will be based on the position or distance of object from the mirror. If the object distance is very far from the twice the focal length distance of mirror, then the converging point will be the focal point or F. And if the object is placed slightly greater than twice the distance of focal point, then the image will be obtained at 2F. But the parallel beams will be converging at F and 2F.
