This actually means that the object which is emitting light spectrum is moving away from us.. how do you know that ? well.. it is clearly mentioned that it is a red shift so the wavelengths will stretched more . and thus the spectrum turns more reddish as it has higher wavelengths .. hence so called red shifts
Answer:
2 reasons because there are not many of them and they have so much energy that it is hard to capture one at all
Answer:
The total resistance of the circuit is 35 ohms and the total current through the circuit is 0.34 A.
Explanation:
Given that,
The total voltage of the 4 batteries = 12 V
Values of resistances are 25 ohm and 10 ohm.
The total resistance in the series combination is given by :
Let I be the total current through the circuit. It can be solved using Ohm's law as follows :
Hence, this is the required solution.
Answer:
3 m/s
Explanation:
First, find the time it takes to land.
Given in the y direction:
Δy = 0.8 m
v₀ = 0 m/s
a = 10 m/s²
Find: t
Δy = v₀ t + ½ at²
0.8 m = (0 m/s) t + ½ (10 m/s²) t²
t = 0.4 s
Next, find the velocity needed to travel 1.2 m in that time.
Given in the x direction:
Δx = 1.2 m
a = 0 m/s²
t = 0.4 s
Find: v₀
Δx = v₀ t + ½ at²
1.2 m = v₀ (0.4 s) + ½ (0 m/s²) (0.4 s)²
v₀ = 3 m/s