Answer: if the door knob is metal the static electricity will exit your body, but shock you in the process
Explanation:
Answer:
(a) 1782 Hz (b) 2178 Hz
Explanation:
The predominant frequency =1980 Hz
The speed of the police car =34.3 m/sec
The speed of sound in air =343 m/sec
(a) When the car moves towards you
According to Doppler's effect
(b) When the car moves away from you
Answer:
Explanation:
Light year is the distance , ray of light travels in one year at the speed of 186000 mi/s
Distance traveled by light in one year
= speed x time
186000 x 365 x 24 x 60 x 60 miles
= 5.8657 x 10¹² mi
the Earth – Sun distance in light- years.
= 92.9 × 10⁶ mi. / 5.8657 x 10¹² mi light years
= 15.84 x 10⁻⁶ light years
To calculate in terms of parsec
1 degree angle
= 60 x 60 second
π /180 radian = 60 x 60 second
1 second = 3.14 / 180 x 3600
= 4.84 x 10⁻⁶ rad
one parsec = 1AU / one second
92.9 × 10⁶ mi / one second
= 92.9 × 10⁶ mi / 4.84 x 10⁻⁶ rad
= 19.19 x 10¹² mi
the Earth – Sun distance in parsec.
= 92.9 × 10⁶ mi. / 19.19 x 10¹² parsec.
= 4.84 x 10⁻⁶ parsec.
Answer:
F' = 2F
Explanation:
The gravitational force of attraction between asteroids is given by Newton's Law of Gravitation:
where,
F = Force
G = Universal Gravitational Constant
m₁ = m₂ = m = mass of each asteroid
r = distance between asteroids
Therefore,
--------------------- eq(1)
Now, if we double the mass of one asteroid:
using equation (1):
<u>F' = 2F</u>
The electrical power loss is 50 megawatts.
<h3>What is the power loss due to the resistance of the wire?</h3>
The electrical power loss, P due to the resistance of the wire is calculated as follows:
Given the following data:
Current = 1000A
Voltage = 700 KV
Resistance per length = 0.5 Ω/mi
Length of wire = 100 miles
Resistance, R = 0.5 Ω/mi x 100 mi
R = 50Ω
Therefore;
P = (1000 A)² x 50 Ω
P = 50,000,000 W
P = 50 megawatts
In conclusion, the electrical power loss is obtained from the current and the resistance.
Learn more about power loss at: brainly.com/question/13080026
#SPJ4
