A 1.5-m length of straight wire experiences a maximum force of 1.6 N when in a uniform magnetic field that is 1.8 T. 1) What cur
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Answer:
25 seconds (rounded up to nearest one second)
Explanation:
Cheetah's speed = 91.8 km/h
Gazelle's speed = 77.9 km/h
Both animals are running at full speed with the gazelle 97.3 m ahead.
Converting their respective speeds to m/s ;
Cheetah's speed = = 25.5 m/s
Gazelle's speed = = 21.6 m/s (correct to one decimal place)
Assuming the gazelle stops, cheetah will run at 25.5 m/s - 21.6 m/s = 3.9 m/s to catch its prey (gazelle).
Time = distance ÷ speed
The time cheetah will take to catch its prey = 97.3 m ÷ 3.9 m/s = 24.94871795 s = 25 seconds (rounded up to nearest one second)
A transformer is designed to change 109 VV into 13,500 VV, and there are 120 turns in the primary coil. The secondary coil will have 14862 turns
A step-up transformer is a transformer that increases the voltage from the primary coil to the secondary coil while managing the same power at the rated frequency in both coils. It converts low voltage & high current from the primary side to the high voltage & low current on the secondary side of the transformer.
Ns = number of turns on the secondary coil = ?
Np = number of turns on the primary coil = 120
Vs = voltage across the secondary coil = 13500
Vp = voltage across the primary coil = 109
=
109/13500 = 120 / Ns
Ns = 14862 turns
To learn more about step-up transformer here
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