All categories

4 years ago

Special relativity cannot be used to study an object in which frame of reference

Physics

2 answers:

Luba_88 [7]4 years ago

6 0

The question is incomplete. The complete question is:

Special relativity cannot be used to study an object in which frame of reference?

A. A frame of reference that has no change in velocity

B. A frame of reference that is moving in a circle

C. A frame of reference that has a constant, positive acceleration

D. A frame of reference that has a constant, negative acceleration

Answer:

A frame of reference that has a constant, positive acceleration

A frame of reference that has a constant, negative acceleration

Explanation:

Special relativity applies to frames of reference in which an object is moving at constant velocity.

If the velocity is constant, it implies that acceleration will be zero hence options C and D will be correct since they both involve a non-zero change in velocity.

Phoenix [80]4 years ago

4 0

Special relativity can be used to study an object in which frame of reference ... C. A frame of reference that has a constant, positive acceleration.

You might be interested in

A beam of 1.0 MHz ultrasound begins with an intensity of 1000 W/m². After traveling 12 cm through tissue with no significant ref

Ksenya-84 [330]

Answer:

Option C

Explanation:

Given:

- Depth of tissue d = 12 cm

- frequency of ultrasound f = 1 MHz

- Input Intensity I_i = 1000 W/m^2

- attenuation coefficient soft tissue a = 0.54

Find:

- Out-put intensity at the required depth

Solution

- The amount of attenuation in (dB) with the progression of depth is given by:

Attenuation = a*f*d

Attenuation = 0.54*12*1

Attenuation = 6.48 dB

- The relation with attenuation and ratio of input and output intensity is given by:

Attenuation = 10*log_10 (I_i / I_o)

6.48 dB = 10*log_10 (I_i / I_o)

I_i / I_o = 10^(0.648)

I_o = 1000 / 10^(0.648)

I_o = 225 W/m^2

- Hence the answer is option C: I_o = 250 W/m^2

4 0

4 years ago

Are aliens real in 2020

e-lub [12.9K]

Yes, they look exactly like newborn babies

6 0

3 years ago

Read 2 more answers

A positive charge is moving to the right and experiences an upward magnetic force?

Crank

Answer:

Into the page

Explanation:

According to Fleming's hand rule, the middle finger represent the direction of the current, the forefinger represents that of the magnetic field and the thumb gives the direction of the force. when you hold out your left hand with the forefinger, middle finger and thumb at the right angle to one another as the thumb points upward the middle finger will point rightward and the forefinger will point in the direction into the paper.

8 0

3 years ago

A ledge on a building is 18 m above the ground. A taut rope attached to a 4.0-kg can of paint sitting on the ledge passes up ove

True [87]

Answer:t=5.07 s

Explanation:

Given

height of Building h=18 m

mass of Paint can $m_1=4 kg$

mass of second can $m_2=3 kg$

let T be the Tension in the rope

For 4 kg can

$4g-T=4a$

$T=4(g-a)$ ----1

For 3 kg can

$T-3g=3a$

$T=3(g+a)$ ----2

From 1 and 2

$4(g-a)=3(g+a)$

$g=7a$

$a=\frac{g}{7}$

So time taken to cover 18 m is

$h=ut+\frac{at^2}{2}$

$18=0+\frac{g\cdot t^2}{7\times 2}$

$t^2=\frac{18\times 2\times 7}{g}$

$t=5.07 s$

5 0

3 years ago

How a suit of armor might be a good analogy for a function of the skeleton system

RideAnS [48]

How might a suit of armor be a good analogy for a function of the skeletal system?

It's a frame for your body and protects organs and armor protects your body from injury

4 0

3 years ago