Answer:
Actually, Polaris, also named alpha Ursa Minoris, is the brightest star in the Little Dipper. It marks the end of the handle. By a twist of luck, it also happens to reside very close to the North Celestial Pole (NCP). This is the point in the sky that all the stars in the north rotate around. It’s not exactly on the NCP, in fact it’s more than a Moons width away, so it scribes out a very small circle in long exposure star trail images like this one below. To the unaided eye it appears that all the stars rotate around Polaris while it remains fixed in one spot. During the last half of the 20th century Polaris’ variations had dropped to approximately 2%. No other Cepheid is known to have gone through this. Astronomers believed they were witnessing the evolution of the star before their very eyes, and that eventually we would see Polaris’ variations snuff out entirely.
Explanation:
<h3>Answer</h3><h3>option B</h3><h3>38 N</h3><h3>Explanation</h3>
Given that,
mass of block A = 14kg
mass of block B = 12kg
angle alpha equals = 19°
<h3>Formula to find tension in the wire connecting blocks A and B</h3>
Tension in wire connecting weight of object A and B is due to weight of block B
= mgsin19
due to slope we will take horizontal components of weight, mg
= 12(9.81)sin(19)
= 38.3
Answer:
in accelerated motion
Explanation: tbh I just guessed if im wrong sorry
Its a type of phase change and it is melting.
The problem is asking for the buoyant force.
The first step is to know the weights of the tank and air. Tank = 13.7 * 9.8 = 134.26 N Air = 3 * 9.8 = 29.4 N Total weight of the tank and air is 163.66 N
To know the buoyant force, we must convert 15.7 liters to cubic meters.
1 liter = 1000 ml = 1000 cm^3 1 m = 100 cm 1 m^3= 1,000,000 cm^3 One liter = 1000 divided by 1,000,000 = 0.001 m^3 V = 15 * 0.001 = 0.015 m^3
Then compute for the buoyant force:Buoyant force = 0.015 * 1025 * 9.8 = 150.675 N