Answer: Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust
Answer:
Cost to leave this circuit connected for 24 hours is $ 3.12.
Explanation:
We know that,
f = frequency (60 Hz)
c= capacitor (10 µF = 
)
Substitute the given values
Given that, R = 200 Ω
X = 332.31 Ω
Current (I) = 0.361 amps
“Real power” is only consumed in the resistor,
In one hour 26 watt hours are used.
Energy used in 54 hours = 26 × 24 = 624 watt hours
E = 0.624 kilowatt hours
Cost = (5)(0.624) = 3.12
A. 0 and .7 to .8
B. .2 to .4, and 1 to 1.1
C. 0 to .2, and .8 to 1
D. .4 to .7
Answer:
The work done by the crane is, W = 441000 J
The power of the crane is, p = 3675 watts
Explanation:
Given data,
The mass of the object, m = 900 kg
The object is lifted to the height, h = 50 m
The time taken to lift the mass, t = 2 min
= 120 s
The work done by the crane on the object is equal to the potential energy of the object at that height. It is given by the formula,
W = P.E = mgh joules
Substituting the values in the above equation
W = 900 kg x 9.8 m/s² x 50 m
= 441000 J
The work done by the crane is, W = 441000 J
The power of the crane,
P = W / t
= 441000 J / 120 s
= 3675 watts
Hence, the power of the crane is, p = 3675 watts
Answer:
Amplitude
Explanation:
The amount of energy a wave carries is determined by the amplitude. The larger the amplitude, the more energy the wave has, and the smaller the amplitude, the less energy the wave has.
In this case, since wave A has more energy than wave B, wave B must have a smaller amplitude than wave A.
Let me know if this helps!
