Answer:
Explanation:
mass of crate, m = 30 kg
initial velocity, u = 3.9 m/s at an angle 37° west of north
final velocity, v = 5.62 m/s at an angle 63° south of east
By teh work energy theorem, the work done is equal to the change in kinetic energy of the body.

W = 0.5 x 30 x (5.62² - 3.9²)
W = 15 x 16.37
W = 245.6 J
We don't know anything about the structure or materials of the real transformer, so all we can do is assume that it's ideal, with no losses.
1). <em>N1/N2 =</em> 120v/12v = <em>10:1</em>
2). <em>I =</em> V/R = 12/4.7 = <em>2.55 Amperes</em>
3). <em>Power =</em> V²/R = (12)² / 4.7 = <em>30.64 watts</em>
4). Power = V² / R
R = V² / power
R = (120)² / (30.64 watts)
<em>R = 470 ohms </em>
Answer:
Newtons first law
Explanation:
object in rest stays at rest
object in motion stays in motion
Answer:
Good morning! It's D. all of the above
Explanation:
Social backgrounds, culture, politics, education and economic reasoning might equally contribute to uncontrolled settlements. People live in disaster-prone areas partly for economic reasons. In the case of Semarang, where tidal flooding submerges houses, people stay due to economic factors.
Plus I took the test and got it right
_AnnieTheDreamGirl, 3/10/2022
I guess the problem is asking for the induced emf in the coil.
Faraday-Neumann-Lenz states that the induced emf in a coil is given by:

where
N is the number of turns in the coil

is the variation of magnetic flux through the coil

is the time interval
The coil is initially perpendicular to the Earth's magnetic field, so the initial flux through it is given by the product between the magnetic field strength and the area of the coil:

At the end of the time interval, the coil is parallel to the field, so the final flux is zero:

Therefore, we can calculate now the induced emf by using the first formula: