4 years ago

What does a minus sign for an image distance tell us about the nature of the image

Physics

1 answer:

Monica [59]4 years ago

3 0

Are you asking about a mirror or lens? A concave or convex ? please specify so one can answer precisely.

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What is its speed after 3. 83 as if it accelerates uniformly at −3. 04 m/s 2 ? answer in units of m/s.

weeeeeb [17]

The velocity equation is $v_{final} =v_{initial} +at\\$

Known facts:

t = 3.83s
a= -3.04
intial velocity = 0

Plug into equation known quantities:

$v_{final} = (-3.04) * 3.83 = -11.6432m/s$

Thus the final velocity is -11.6432m/s

Hope that helps!

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3 years ago

What are the five natural agents of erosion? What is the driving force behind all of these agents of erosion?

Ne4ueva [31]

Moving water, wind, gravity, and ice are the five natural agents of erosion

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3 years ago

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between

Klio2033 [76]

Answer:

a) $u=0.05602\ m.s^{-1}$

b) $u'=0.0169\ m.s^{-1}$

Explanation:

Given:

mass of the ball, $m=0.4\ kg$

horizontal velocity of the ball, $u=10\ m.s^{-1}$

mass of the person, $M=71\ kg$

<u>Using the law of conservation of momentum:</u>

$m.v=(M+m).u$

$0.4\times 10=(71+0.4)\times u$

$u=0.05602\ m.s^{-1}$

Given:

rebound velocity of the ball, $v'=7\ m.s^{-1}$

Using conservation of momentum,

$m.v+M.u=m.v'+M.u'$

$0.4\times10+71\times 0=0.4\times 7+71\times u'$

$u'=0.0169\ m.s^{-1}$

4 0

3 years ago

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An open organ pipe is 2.46 m long, and the speed of the air in the pipe is 345 m/s.

lukranit [14]

Answer:

Fundamental frequency is 70.12 m

Explanation:

For an open organ pipe, the fundamental frequency is given by :

$f=\dfrac{nv}{2l}$

n = 1 for fundamental frequency

v is speed of sound in air, v = 345 m/s

l is length of open organ pipe, l = 2.46 m

Substituting values in above formula. So,

$f=\dfrac{1\times 345}{2\times 2.46}\\\\f=70.12\ Hz$

So, the fundamental frequency of this pipe is 70.12 m.

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3 years ago

A wave travels through a medium because

Amanda [17]

in case you dont want to read the answer is B

5 0

3 years ago

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