Answer:
The second option - the papers are acted upon by an unbalanced force from the fan.
Explanation:
Answer:
Yes
Explanation:
Outer space is an excellent environment to demonstrate the law of Action-Reaction, since there is no friction with boundaries, and also one is away from the Earth gravitational pull, then such force can be neglected.
Answer:
The velocity is .
Explanation:
Given that,
Charge density of the plane
Distance = 1.05 mm
We need to calculate the electric field due to plane of charge
Using formula of electric field
Put the value into the formula
We need to calculate potential difference
Using formula of potential difference
Put the value into the formula
We need to calculate the work requires to be done to reach the surface of the plane
Using formula of work done
Put the value into the formula
We need to calculate the velocity
Using work energy theorem
Hence, The velocity is .
That depends on what its speed was at the beginning of 5 seconds,
and on what exactly happened to it.
If it got pushed off of the window sill and fell to the ground below,
then the answer would depend on how high the window sill is.
If the flower pot kept falling for the whole 5 seconds, then its speed
would be <em>49 meters per second</em> at the end of the 5 seconds. That's
because here on Earth, gravity increases the speed of falling things
by 9.8 meters per second for every second they fall.
Naturally, this answer is only true if the window sill is more than
122.5 meters above the ground ... about 402 feet, or 40 floors.
If it's lower than that, then the flower pot hits the ground in less
than 5 seconds, and its speed at the end of 5 seconds is zero.
By the way ...
-- It makes no difference how much the flower pot weighs.
All objects fall with the same acceleration, and hit the ground
at the same time.
-- 5 kilograms is a mass, not a weight.