Answer:
don't know
Explanation:
can you give the other parts of the question?
Question 1:
Looking for: "speed" (velocity: v)
Given: 112.0 meters (distance: d) 4.0 seconds (time: t)
Formula used: v=d/t
since velocity is equal to the distance (112m) divided by the time (4sec) you would have 112m/4s which is 28m/s. m/s is meters traveled per second traveling aka meters per second.
Question 2:
Looking for: average "speed" don't let the word average confuse you it is still velocity.
Given: 60km (distance: d) and 3.5 hours (time: t)
Formula required: v=d/t
Since velocity needs to be in the units of m/s first convert your time, which was provided in hours, to seconds.
3.5 hours 60 minutes per hour: 3.5 x 60= 210 minutes
210 minutes 60 seconds per minute: 210 x 60= 12600 seconds
also, kilometers needs to be converted to meters. The prefix kilo means 1000 so 1 kilometer = 1000 meters.
60 x 1000 = 60,000 meters
Plug the values into the equation required:
v=d/t
v= 60,000m / 12,600sec
v= 4.76 m/s
This device is a transformer.
A transformer is made of two coils. An alternating current in the first coil produces a varying magnetic field and so a varying magnetic flux through the second coil. The varying magnetic flux creates an electromotive force in the second coil, for the Faraday's law of induction, that is proportional to the variation of the flux, and this electromotive force corresponds to the new voltage on the second coil.
The relationship between the voltage in the first coil (Vp) and the voltage in the second coil (Vs) is given by
where Np and Ns are the number of turns in the primary and secondary coil, respectively.
Answer:
When Copernicus first systematically created his Sun-centered model of the universe, it did not lead to substantially better predictions of planetary positions than the Ptolemaic model because the Catholic Church, which was the power at the time, stated it was false, and anybody who believed Copernicus and spread the "myth" were excommunicated or even executed. This was because a sun centered universe would mean that everything the Catholic Church had been teaching about how the Earth was the center of the universe would be false. If people believed it, the church would no longer be seen as the infallible authority, so they needed to stop it from spreading.
newtons first law states that a object in motion will stay in motion unless acted on by an outside force and an object at rest will stay at rest for the same reason. the force of a moving object is equal to its mass times its acceleration.