Answer:
Explanation:
We are given that
When d=3 m
We have to find the intensity when the distance from the light bulb is 2 m away.
According to question
Intensity,
Where k=Proportionality constant.
Substitute the values
Intensity when d=2 m
Answer:
Pressure exerted on the wall is 8775 kgm/s²
Explanation:
Parameters given:
Time = 1s
Number of molecules: 5*10²³
Area: 8cm² = 8*0.0001 = 0.0008m²
Speed of molecules: 300m/s
Mass of N₂ molecule: 4.68 x 10⁻²⁶ kg
Pressure = Force/Area
Total pressure of N molecules will be:
Pressure = Force*Number of molecules/Area
Force is given as:
Force= mass*acceleration
And acceleration is:
Acceleration = velocity/time
Therefore,
Force = (mass*velocity)/time
Pressure = (mass*N*velocity)/(Area*time)
Pressure = (4.68 x 10⁻²⁶*5*10²³*300)/(0.0008*1)
Pressure = 7.02/0.0008
Pressure = 8775 kgm/s²
Answer:
Pluto's orbit brings it inside the orbit of <u>Neptune</u>.
Answer:
(C) , The wires repel
Explanation:
We are given that
Length of wire=L=7 m
We have to find the magnitude and direction of the force that the two segments of this cord exert on each other.
Where
Using the formula
When the wires carrying current in equal current in opposite direction then, the wire repel to each other.
Hence, the wires repel to each other.
0.200 equals move 2 decimal places to the right