Answer:
1.
Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years.
2.
Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth's night sky. The name means "glowing" in Greek — a fitting description, as only a few planets, the full moon and the International Space Station outshine this star.
The hint is wrong.
Volume of a cylinder is π r² h .
For the cylinder in the question,
Volume = ( π ) · (1.5 cm)² · (5.3 cm)
= ( π ) · (2.25 cm²) · (5.3 cm)
= ( π ) · (11.925 cm³)
= 37.4 cm³
Answer:
Explanation:
Let's use the conservation of angular momentum here. If there is a conservation the addition of both must be zero.
The momentum of inertia of both are:
The angular momentum is the product between angular velocity and momentum of inertia.
Let's solve it for ω(t).
But
- R is the radius R=D/2 = 30 cm = 0.3 m
- V is the steady speed V = 0.74 m/s
Knowing that 2π rad is a rev. We have.
The minus sign means the track is moving opposite of the car.
I hope it helps you!
I hope this helps.
Cheers.^^
(I could not find one of them, but the other nine are found.)
Answer:
<h2>9.17 m/s²</h2>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
f is the force
m is the mass
From the question we have
We have the final answer as
<h3>9.17 m/s²</h3>
Hope this helps you