All categories

3 years ago

What type of star has a low temperature and a low luminosity?

Physics

1 answer:

Brrunno [24]3 years ago

8 0

Answer:

Explanation:

the higher up on the Main Sequence the star is, the shorter it lives. The smaller main sequence stars have low luminosities and low surface temperatures. These stars take a very long time to fuse hydrogen into helium and will therefore live a very long life.

You might be interested in

Earth has seasons because _____.

sladkih [1.3K]

Answer:

c, its axis is tilted

maybe

As it works its way around the sun, its tilted axis exposes different parts of earth.

C would be it because the roation of Earth on its axis doesn't have anything to do with the exposer of the revolution on its axis

7 0

3 years ago

Read 2 more answers

Fluid Dynamics links the concept of viscosity to the fluid flow. Mention how the contact angle, surface tension, capillarity gov

Elanso [62]

Fluid Dynamics is an area of research that started a long time ago, along with Calculus. It combines techniques of Mathematical Analysis and of Dynamical Systems, such as Bifurcation Theory, among others.

<h3>What is surface tension?</h3>

Surface Tension is a phenomenon that occurs in all liquids, it is characterized by the formation of a kind of elastic membrane at its ends.

<h3>How to calculate the contact angle?</h3>

Contact angles in powders can be measured using the sessile drop measurement in the compressed powder or using the force tensiometer with the Washburn method.

In fluid dynamics, the variables of surface tension, viscosity and contact angle are treated. When dealing with viscosity we have fluid can be viscous or a real fluid. In general, fluids are viscous.

See more about fluid dynamics at brainly.com/question/5144636

#SPJ1

8 0

2 years ago

Which statement best describes electrons?

crimeas [40]

They are positive and remain inside the nucleus.

4 0

2 years ago

1. A 1000 kg bag of sand has an<br> acceleration of 0.5m/s/s. What is the<br> force on the bag?

densk [106]

Answer:

We conclude that the force on the bag is 500 N.

Explanation:

Given

Mass m = 1000 kg

Acceleration a = 0.5 m/s²

To determine

Force F = ?

We know that when a force is applied to a body, it produces acceleration.

<u>Important Tip: </u>

We can determine the force on the bag using the formula F = ma

Using the formula

$F = ma$

where

$F$ is the force

$m$ is the mass

$a$ is the acceleration

now substitute m = 1000, and a = 0.5 m/s² in the formula

$F = ma$

$F = (1000)(0.5)$

$F=500$ N

Therefore, we conclude that the force on the bag is 500 N.

5 0

3 years ago

A 50.9 kg diver steps off a diving board and drops straight down into the water. The water provides an average net force of resi

Fynjy0 [20]

Answer:

T = 23.92 m

Explanation:

given,

mass of the diver = 50.9 Kg

Resistant force from the water = f = 1492 N

diver come top rest under water at a distance = 6 m

acceleration due to gravity = 9.81 m/s²

final velocity = v = 0 m/s

initial velocity = u = ?

total distance = ?

Now acceleration of body under water

f = m a

$a = \dfrac{1492}{50.9}$

$a = 29.31\ m/s^2$

using equation of motion

v² = u² + 2 a s

0 = u² - 2 x 29.31 x 6

$u = \sqrt{2\times 29.31\times 6}$

u = 18.75 m/s

now.

calculating distance of the diver in air

v² = u² + 2 a s

0 = 18.75² - 2 x 9.81 x s

s = 17.92 m

total distance

T = 17.92 + 6

T = 23.92 m

the total distance between the diving board and the diver’s stopping point underwater T = 23.92 m

6 0

4 years ago