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3 years ago

What percentage of Sun-like stars exists in multiple-star systems?

Physics

2 answers:

Elden [556K]3 years ago

8 0

It D 25% because of 25%25

natka813 [3]3 years ago

5 0

D. About 25%

25% of stars have compainions

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Two magnets are arranged so that they pull together. Which conclusion can be reached? A.Two north poles are together. B. Two sou

Virty [35]

Answer:

Answer is D. a north pole is near a south pole

Explanation:

Hope this helps!! :D

6 0

2 years ago

Read 2 more answers

Suppose the ring rotates once every 4.30 ss . If a rider's mass is 58.0 kgkg , with how much force does the ring push on her at

Stells [14]

Answer:

422.36 N

Explanation:

given,

time of rotation = 4.30 s

T = 4.30 s

Assuming the diameter of the ring equal to 16 m

radius, R = 8 m

$v = \dfrac{2\pi R}{T}$

$v = \dfrac{2\pi\times 8}{4.30}$

v = 11.69 m/s

now, Force does the ring push on her at the top

$- N - m g = \dfrac{-mv^2}{R}$

$N + m g = \dfrac{mv^2}{R}$

$N = \dfrac{mv^2}{R}- m g$

$N = m(\dfrac{v^2}{R}- g)$

$N = 58\times (\dfrac{11.69^2}{8}- 9.8)$

N = 422.36 N

The force exerted by the ring to push her is equal to 422.36 N.

6 0

3 years ago

Para que el calor sea transmitido por conducción los cuerpos deben tocarse? verdadero o falso

dybincka [34]

Answer:

verdadero

Explanation:

Conducción:Es la más sencilla de entender, consiste en la transferencia de calor entre dos puntos de un cuerpo que se encuentran a diferente temperatura, sin que se produzca transferencia de materia entre ellos.

7 0

2 years ago

6. When adding vectors graphically, the direction and length of each vector must:

Tanzania [10]

Answer:

Not be changed

Option: D

Explanation:

The physical quantity which has both ‘magnitude and direction’ is called vector. These vectors are represented by a line and an arrow, the line represent the magnitude and arrow represent the direction of the physical quantity. The vectors are added and subtracted according to the direction of the vectors.

According to the vector law addition while adding vectors direction and length of the vector is not be changed. If the length of the vector changed the magnitude is also changed while so, while adding vectors length must not be changed.

3 0

3 years ago

PLEASE HELP COME UP WITH 5 MULTIPLE CHOICE QUESTIONS FROM HEALTH RELATED FITNESS AND SKILL RELATED QUESTIONS

Helga [31]

Answer:

1. What is not considered a cardiovascular workout?

A. Jogging

B. Sit ups

C. Jump Ropes

D. Burpees

Explanation:

I am sorry, I am in middle school and I only have one question.

5 0

2 years ago