Telescopes have three functions
1 to collect more light
2 To resolve close objects
3 To magnify.
Explanation:
To collect more light we have to build large sized mirrors..Then only we can see very faint objects.
To separate two close objects a also we need large aperture
So by making large telescopes we can see more faint objects and more deeper into universe..
Answer:
Correct answer: V₂ = 1.79 m/s
Explanation:
Given:
m₁ = 32 kg the mass of the first student
V₁ = 2.4 m/s speed of the first student after pushing
m₂ = 43 kg the mass of the second student student
V₂ = ? speed of the second student after pushing
I₁ = m₁ · V₁ impulse of the first student
I₂ = m₂ · V₂ impulse of the second student
Under the law of impulse maintenance, the total impulse of an object must be constant over time.
Since the total impulse before pushing was equal to zero it must be afterwards.
I₁ + I₂ = 0 ⇒ I₂ = - I₁ ⇒ V₂ = - V₁
Given that the impulses are vectors a sign minus ahead of the first pulse mean, they are opposite directions.
m₂ · V₂ = m₁ · V₁ ⇒ V₂ = (m₁ · V₁) / m₂ = (32 · 2.4) / 43 = 1.79 m/s
V₂ = 1.79 m/s
God is with you!!!
Answer:
B. Evaporation
Explanation:
Because I am absolutely positive
Please give Brainlyest
Answer:
Net force would be zero
Explanation:
It's still receiving a gravitational force of almost 500 Newtons downward, but because it has reached terminal velocity, that means it's also receiving an opposite and roughly equal force due to friction with the air. The two balance out for a total of zero.
In this case energy will be the kinetic energy given by the formula;
1/2mv² , where m is the mass and v is the velocity;
Velocity = 2.3 m/s and the mass is 7.2 kg
Hence;
= 1/2 × 7.2 × 2.3²
= 19.044 Joules