Answer:
Explanation:
To calculate the red shift you use the following formula:

\tetha: angle between the observer and the motion of the body
v: speed of the body
c: speed of light
for motion with angle 90° (transversal motion):

- A red dwarf moving away from Earth at 39.1 km/s :

- A yellow dwarf moving transversely at 15.1 km/s (angle = 90°):

- A red giant moving towards Earth at 23.3 km/s (angle = 0°):

- A blue dwarf moving away from Earth at 25.9 km/s
- A red dwarf moving transversely at 14.1 km/s

The answer is c and my reason is I have straight As
Answer:
F = 2553.6 N
Explanation:
v² = u² + 2as
0² = 16² + 2a4.0
a = -32 m/s²
F = ma = 79.8(32) = 2553.6 N
Answer:
<h3>The answer is 144 g</h3>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume = 78.0 mL
density = 1.85 g/mL
We have
mass = 78 × 1.85 = 144.3
We have the final answer as
<h3>144 g</h3>
Hope this helps you