Answer:
B train!
Explanation:
A train travelled at 40 km/hr. (120/3)
B train traveled at 45 km/hr (180/4)
The frequency of the green light of the electromagnetic spectrum is 5.45 × 10¹⁴ Hz.
The green light is found in the visible region of the electromagnetic spectrum.
An Electromagnetic is a spectrum which is made up of all kind of wave is constitute and electric as well as magnetic field.
The green light which is the constituent of the white light fall under the visible region of the electromagnetic spectrum so it can have the frequency 5.45 × 10¹⁴ Hz.
This frequency is more than the infrared frequency but less than the ultraviolet frequency.
To know more about frequency, visit,
brainly.com/question/254161
#SPJ4
Answer:
1 x 10¹⁸cm
Explanation:
Given parameters:
Velocity of light = 300,000,000cm/s
Unknown:
Distance in centimeters = ?
Solution:
To solve this problem,
The velocity of light is 3 x 10⁸m/s
Velocity =
Distance = velocity x time = 3 x 10⁸m/s x 3.2 x 10⁷s
= 9.6 x 10¹⁵m
To cm;
100cm = 1m
Distance = 9.6 x 10¹⁵ x 10² = 9.6 x 10¹⁷cm = 1 x 10¹⁸cm
F = m * a
F: force = 3N
m: mass = 1500g = 1.5kg
a: acceleration = __ m s⁻²
3 = (1.5) * a
3 / 1.5 = 1.5a / 1.5
a = 3/1.5
a = 2 m s⁻²
Hope this helps! :)
Answer:
5 m/s^2 will be the acceleration
Explanation:
comment down for further explanation if you want