Answer:
An object on the moon would weigh the LEAST among these. So correct answer is B.
Explanation:
- Weight of an object on any place is given by:
W = Mass * Acceleration due to gravity(g)
- It means when masses of different objects those are in different places are same, the weight of those objects depends upon the 'g' of that particular place.
- As we know, acceleration due to gravity on surface of moon (g') is 6 times weaker than the acceleration on surface of earth (g), which is due to the large M/R^2 of the earth than the moon.
i.e. g' = g/6 so W' = W/6
- And in the space between the two, the object is weightless.
Answer: Right.
According to traffic rules, one should keep one's vehicle in the right side of lane if intends to turn right in near future. The purpose of this is the road safety. Also, it saves time. It would be difficult to take a right turn from the left side of the lane. It would cause inconvenience to others as well.
The answer is t<span>he phosphoric acid in cola easily removes dirt and grime. The </span>"cola" type drinks is suitable to polish chrome surfaces. Cola contains a very diluted solution of phosphoric acid, which can remove rust, dirt, and grime from chrome surface.
Answer: 180.102m
Explanation:
This situation is a good example of the projectile motion or parabolic motion, in which the travel of the ball after it is thrown from the top of the cliff has two components: x-component and y-component. Being their main equations as follows:
x-component:
(1)
Where:
is the ball's initial speed
is the angle above the horizon
is the time since the ball is thrown until it hits the ground
y-component:
(2)
Where:
is the initial height of the ball
is the final height of the ball (when it finally hits the ground)
is the acceleration due gravity
Knowing this, let's begin with the calculations:
Firstly, we have to find the time the ball elapsed traveling. So, we will use equation (2) with the conditions given above:
(3)
Isolating from (3):
(4)
(5)
Substituting (5) in (1):
(6)
Finally:
(7)
