Answer: Some conversions from one system of units to another need to be exact, without increasing or decreasing the precision of the first measurement. This is sometimes called soft conversion. It does not involve changing the physical configuration of the item being measured.
Explanation:
Answer:
the resistance force is mg cos(-)
Explanation:
They hit at the same time. Everything falls at the same rate.
An object<span> with twice as much mass will exert twice as much </span>gravitational<span> pull on other </span>objects<span>. The </span>gravitational<span> force increases as the size of an </span>object<span>increases. On the other hand, the strength of </span>gravity<span> is inversely </span>related<span> to the square of the distance between two </span>objects<span>.</span>
Answer:
50%
Explanation:
For the particular case we assume that the centripetal force is equal to the frictional force. Starting from this, we realize that while the car takes a curve, which allows it to not leave the track, it is the friction force that adheres it to the floor, in this way,

The values of these equations are given by,


Equating the terms


Both gravity and radius are values that during the trajectory with constants, so

The difference comes in winter and dry, so,
\mu_{dry} = \mu
as in winter it is a quarter, you have to,
\mu_{winter} = \frac{1}{4} \mu_{dry} = \frac{1}{4} \mu
Performing the proportion we have to


We can conclude that the new value for this speed is 50% of its value on a dry day.