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Natasha2012 [34]

2 years ago

14

Why is there two π in the formula of a mathematical pendulum (T=2π √l/g)?

1 answer:

uysha [10]2 years ago

5 0

Answer:

The π is from the initial formula of period T=2π/omega

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The dimensions of the disk of our milky way galaxy are:.

Katen [24]

Answer:

According to studies, the milky way is approximately, "170,000–200,000 light-years (52–61 kpc) in diameter and, on average, approximately 1,000 ly (0.3 kpc) thick."

With that being said, it is safe to say that the dimensions are somewhere around 100,000 by 1,000

6 0

2 years ago

How long does it take an airplane to fly 5000 miles if it maintains a speed of 240 miles per hour

aliina [53]

With a 30 mph head wind it takes the plane 18.52 hours to fly 5000 miles. ANSWER 2: With a 30 mph tail wind it takes the plane 15.15 hours to fly 5000 miles.

3 0

3 years ago

RATIO of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is:

katen-ka-za [31]

Answer:

<h2> $3) \: \: \frac{5}{27}$ </h2>

Explanation:

Hope it is helpful....

8 0

2 years ago

Read 2 more answers

Which are precautions to take when working with heat and fire?

shtirl [24]

Always wear protected face gear and body gear, make sure you have an adult present and a fire extinguisher

3 0

3 years ago

Aparticlewhosemassis2.0kgmovesinthexyplanewithaconstantspeedof3.0m/s along the direction r = i + j . What is its angular momentu

svetoff [14.1K]

Answer:

$\vec{L}=-30\frac{kgm^2}{s}\hat{k}$

Explanation:

In order to calculate the angular momentum of the particle you use the following formula:

$\vec{L}=\vec{r}\ X\ \vec{p}$ (1)

r is the position vector respect to the point (0 , 5.0), that is:

r = 0m i + 5.0m j (2)

p is the linear momentum vector and it is given by:

$\vec{p}=m\vec{v}=(2.0kg)(3.0m/s)(\hat{i+\hat{j}})=6\frac{kgm}{s}(\hat{i}+\hat{j})$ (3)

the direction of p comes from the fat that the particle is moving along the i + j direction.

Then, you use the results of (2) and (3) in the equation (1) and solve for L:

$\vec{L}=-30\frac{kgm^2}{s}\hat{k}$

The angular momentum is -30 kgm^2/s ^k

8 0

3 years ago