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3 years ago

Through which gas in the table will sound waves travel faster than they would

Physics

2 answers:

WINSTONCH [101]3 years ago

7 0

Answer: b. methane

Explanation: ap3x

Leni [432]3 years ago

4 0

Answer: Methane

Explanation: I just took the AP€X quiz and Methane was the correct answer!

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The current passing through each resistor depends on which of the following?

Soloha48 [4]

Answer:

voltage across the resistor

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3 years ago

Using an analogy of a water balloon, describe the function of the bladder. (2 points)

a_sh-v [17]

Answer:

it fucntions

Explanation:

7 0

3 years ago

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A light-year is the distance that light can travel in one year. If the sun is 1.5 x 10⁸ km away, how many light years is the sun

photoshop1234 [79]

Answer:

0.00001581 light years

Explanation:

distance divided by speed of light= 150,000,000/300,000= 500 seconds 8.3333

8.3 minutes

now divide this by 60 x 24 x 365.25. so you will get answer=

.000015823 light years.

3 0

2 years ago

A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/

NemiM [27]

Answer:

a) $F_H=776.952\ N$

b) $F_g=706.32\ N$

c) $v=5.4249\ m.s^{-1}$

d) $KE=1059.48\ J$

Explanation:

Given:

mass of the astronaut, $m=72\ kg$

vertical displacement of the astronaut, $h=15\ m$

acceleration of the astronaut while the lift, $a=\frac{g}{10} =0.981\ m.s^{-2}$

<u>Now the force of lift by the helicopter:</u>

Here the lift force is the resultant of the force of gravity being overcome by the force of helicopter.

$F_H-F_g=m.a$

where:

$F_H=$ force by the helicopter

$F_g=$ force of gravity

$F_H=72\times 0.981+72\times9.81$

$F_H=776.952\ N$

The gravitational force on the astronaut:

$F_g=m.g$

$F_g=72\times 9.81$

$F_g=706.32\ N$

Since the astronaut has been picked from an ocean we assume her initial velocity to be zero, $u=0\ m.s^{-1}$

using equation of motion:

$v^2=u^2+2a.h$

$v^2=0^2+2\times 0.981\times 15$

$v=5.4249\ m.s^{-1}$

Hence the kinetic energy:

$KE=\frac{1}{2} m.v^2$

$KE=0.5\times 72\times 5.4249^2$

$KE=1059.48\ J$

8 0

3 years ago

Read 2 more answers

Tabitha knows the redshift value of a particular celestial object. What can she use this information most directly to find out?

AlekseyPX

She can use the information of redshift of a celestial body is to find the age and distance of the object.

<h3>What is red shift?</h3>

'Red shift' is a critical idea for astronomers. The frequency of the light is increased, so the light is observed as moving towards the red side of the range.

Tabitha knows the redshift value of a particular celestial object. She uses this information to observe the consequence of the redshift.

Thus, the red shift value is used to determine the age and distance of the object.

Learn more about red shift.

brainly.com/question/5368237

#SPJ1

3 0

2 years ago