Answer:
The main sequence stretching from the upper left (hot, luminous stars) to the bottom right (cool, faint stars) dominates the HR diagram. It is here that stars spend about 90% of their lives burning hydrogen into helium in their cores. Main sequence stars have a Morgan-Keenan luminosity class labelled V.
Explanation:
Answer:
EMF of the power source, E = 19.34 volts
Explanation:
It is given that,
Voltage at which computer sensor is operated, V = 11.7 V
Power, P = 26.37 W
Total resistance of the power source, R = 2.23 Ohms
Firstly, calculating the current in the circuit. It is calculated as :
I = 3.43 A
Let E is the emf of the power source. It is given by,
E = 19.34 volts
Hence, the EMF of the power source is 19.34 volts. Hence, this is the required solution.
Answer:
34.58 N
Explanation:
From the question,
Tension in the cord = Weight of the solid metal- Upthrust
T = W-U................... Equation 1
But,
W = mg
Where m = mass of solid, g = acceleration due to gravity.
Given: m = 4.7 kg, g = 9.8 m/s²
W = 4.7(9.8) = 46.1 N.
U = (Density of water×Volume of water displaced.)gravity
U = D×V×g.
But,
V = Mass of solid/density of solid
V = 4.7/4000
V = 1.175×10⁻³ m³.
Therefore,
U = 1.175×10⁻³(1000)(9.8)
U = 11.52 N
Therefore,
T = 46.1-11.52
T = 34.58 N
Period is defined as the time
required to complete one cycle which is also related to frequency. Period is
presented by an equation P = 1/f where p is the period, and f is the frequency.
The unit is in second. Frequency is defined as the number of circular
revolutions in a given time interval and it is in Hertz (Hz) = 1s^-1. Velocity
s defined as the arc traveled at a given time with the equation v=l/t where v
is the velocity, l is the length and t is time. The unit is in m/s.
4A. PE = MxGxH. (You can consider g as 9.8 / 10m/s as well)
509 J = 12x10xH
509 J = 120xH
H = 509/120
H = 4.24 m
Hope u got the answer....pls rate the answer if it is helpful for u....and I'm sorry I could not understand B part so I didn't do it.
Thank you