Arrange the following sites chronologically, according to their launching year, starting from the first:
(A) Facebook
(B) YouTube
(C) Snapchat
(D) Twitter (now X)
Choose the correct answer from the options given below:
Social Media Launch Years: A Chronological Guide
This question asks us to arrange four prominent social media platforms—Facebook, YouTube, Snapchat, and Twitter (now known as X)—in chronological order based on their initial launch dates. The goal is to identify the earliest launched platform and proceed to the latest.
Launch Dates Determined
First, we need to establish the specific launch year for each platform:
- Facebook: It was launched in February 2004.
- YouTube: This video-sharing platform launched in February 2005.
- Twitter (now X): The microblogging service Twitter was launched in March 2006.
- Snapchat: The mobile messaging app Snapchat was released in September 2011.
Chronological Order Established
Now, let's arrange these platforms based on their launch years, starting with the earliest:
| Platform | Launch Year |
|---|---|
| Facebook (A) | 2004 |
| YouTube (B) | 2005 |
| Twitter (now X) (D) | 2006 |
| Snapchat (C) | 2011 |
The chronological sequence is therefore:
- Facebook (A) - 2004
- YouTube (B) - 2005
- Twitter (now X) (D) - 2006
- Snapchat (C) - 2011
Launch Year Identification Verified
This determined chronological order corresponds to the option (A), (B), (D), (C). This sequence correctly lists Facebook, followed by YouTube, then Twitter (now X), and finally Snapchat, based on their respective launch years.
Important Questions from Miscellaneous
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f1V (f1 < 1) submerged. On the other hand, on a spaceship accelerating with acceleration a < g (g is the acceleration due to gravity on Earth) in outer space, its submerged volume in water is f2V. Then:
A railway wagon (open at the top) of mass M1 is moving with speed v1 along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M2 and speed becomes v2. Taking the rain to be falling vertically and the water stationery inside the wagon, the relation between the two speeds v1 and v2 is :
Consider the following statements:
1. Distance between the longitudes becomes zero on North Pole and South Pole.
2. Distance between the longitudes is maximum on the Equator.
3. Number of longitudes is more than number of latitudes.
Which of the statements given above is/are correct?
One block of 2⋅0 kg mass is placed on top of another block of 3⋅0 kg mass. The coefficient of static friction between the two blocks is 0⋅2. The bottom block is pulled with a horizontal force F such that both the blocks move together without slipping. Taking acceleration due to gravity as 10 m/s2, the maximum value of the frictional force is :
