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4 years ago

What instrument can you use to measure the circumference of your waist?

Physics

2 answers:

GarryVolchara [31]4 years ago

8 0

Answer:

waist circumference

Explanation:

wolverine [178]4 years ago

3 0

<h2><em><u>Answer</u></em>:</h2>

<h3>A <u>measuring tape</u> can be used to measure the circumference of your waist.</h3>

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How much farther from the charge is the 2000 v equipotential surface than the 3000 v surface?

olganol [36]

Answer:

r1 -r2 = 3.75cm

Explanation:

Check the attached file for the solution

7 0

3 years ago

a spherical mirror produces a magnification of -1 on a screen placed at a distance of 40cm from the mirror i) write the type of

Darya [45]

Answer:

f =-20 cm

Explanation:

Given that,

The magnification of a spherical mirror, m = -1

The image distance, v = 40 cm (for negative magnification)

The magnification of a concave mirror is negative. The mirror showing -1 magnification is a concave mirror.

Let f be the focal length of the mirror. We know that,

$m=\dfrac{-v}{u}\\\\-1=\dfrac{-v}{u}\\\\v=u$

Object distance, u = -40 cm

Using mirror's formula i.e.

$\dfrac{1}{f}=\dfrac{1}{u}+\dfrac{1}{v}\\\\f=\dfrac{1}{\dfrac{1}{-40}+\dfrac{1}{-40}}\\\\f=-20\ cm$

So, the focal length of the mirror is 20 cm.

8 0

3 years ago

Middle C, also known as do on the fixed do-solfge scale, is a note used when playing or singing music. The frequency of middle C

Ahat [919]

Answer:

The speed of sound for middle C is 345.01 m/s.

Explanation:

Given that,

The frequency of middle C is 261.63 Hz

The wavelength of middle C note used when playing or singing music, $\lambda=131.87\ cm=1.3187\ m$

We need to find the speed of sound for middle C. We know that the relation between speed, frequency and wavelength is given by the formula as follows :

$v=f\lambda\\\\v=261.63\ Hz\times 1.3187\ m\\\\v=345.01\ m/s$

So, the speed of sound for middle C is 345.01 m/s. Hence, this is the required solution.

8 0

4 years ago

A truck is speeding up as it travels on an interstate. The truck's momentum (in kg · m/s) is proportional to the truck's speed (

serious [3.7K]

Answer:

a)48300 times

b)P = 821100 kg · m/s

Explanation:

Given that

m = 48300 kg

v= 23 m/s

We know that linear momentum (P) given as

P = m v

P = 48300 x 23 kg · m/s

So we can say that truck momentum is 48300 times its velocity.

Now given that

v= 17 m/s

P = m v

P = 48300 x 17 kg · m/s

P = 821100 kg · m/s

6 0

4 years ago

Read 2 more answers

An airplane is moving horizontally with a constant velocity of (+ 115 m/s) at altitude of 1050 m. The directions to the right an

PtichkaEL [24]

Answer:

The time required for the package to hit the ground = 14.63 seconds.

Explanation:

<u>Considering vertical motion of care package</u>:-

Initial velocity, u = 0 m/s

Acceleration , a = 9.81 m/s²

Displacement, s = 1050 m

We have equation of motion s= ut + 0.5 at²

Substituting

s= ut + 0.5 at²

1050 = 0 x t + 0.5 x 9.81 x t²

t = 14.63 seconds

The time required for the package to hit the ground = 14.63 seconds.

7 0

3 years ago