question one b
question 2 i think a
3 d
4 c
5 not sure but wanting to say d
6 letter b
7 not sure
8 idk
9 i have no idea
Since it was stated that it must move at constant
velocity, so the only force it must overpower is the frictional force.
So the equation is:
F cos θ = Ff
F cos 36 = 65 N
F = 80.34 N
<span>So the nurse must exert 80.34 N of force</span>
Answer:
A flame always point upwards because the flame's gas is hotter than the surrounding air and, like you said, a hot gas is always lighter or less dense than a cold gas.
Explanation:
This is the answer "Some active leisure activities, such as yoga and running, require a great deal of physical energy, while other activities, like playing chess, require a substantial amount of mental energy. Passive leisure activities, such as watching TV or going to the movies, require little to no physical or mental energy. Because of the exertion of physical or mental energy, active leisure activities have more health benefits than passive leisure activities." hope it help you?:)
Answer:
Number of coil in the output is 39938
Explanation:
We have given a step up transformer
Input voltage of transformer, that is primary voltage ![v_p=20000volt](https://tex.z-dn.net/?f=v_p%3D20000volt)
Output voltage, that is secondary voltage ![v_s=355000volt](https://tex.z-dn.net/?f=v_s%3D355000volt)
Number of turns in primary ![N_p=2250](https://tex.z-dn.net/?f=N_p%3D2250)
For transformer we know that ![\frac{V_p}{V_s}=\frac{N_p}{N_s}](https://tex.z-dn.net/?f=%5Cfrac%7BV_p%7D%7BV_s%7D%3D%5Cfrac%7BN_p%7D%7BN_s%7D)
![\frac{20000}{355000}=\frac{2250}{N_s}](https://tex.z-dn.net/?f=%5Cfrac%7B20000%7D%7B355000%7D%3D%5Cfrac%7B2250%7D%7BN_s%7D)
![N_s=39937.5](https://tex.z-dn.net/?f=N_s%3D39937.5)
As the number of turns can not be in fraction so number of turns in the output coil is 39938