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3 years ago

Help pls i’m not sure what to do

Physics

1 answer:

Sav [38]3 years ago

7 0

Answer:

I DONT KNOW WHAT TO DO SORRY

Explanation:

EVEN ME IM NOT SURW

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If acceleration is zero what statement about velocity is true *

Wittaler [7]

Answer:

Option"B" is correct.

Explanation:

when a body move with constant velocity then acceleration is zero.

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3 years ago

Read 2 more answers

How do electromagnetic waves differ from mechanical waves?

stich3 [128]

They don't require a medium to propagate, meaning that they can travel through air, solid objects, and space.

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4 years ago

Young's double slit experiment is one of the quintessential experiments in physics. The availability of low cost lasers in recen

ddd [48]

Answer:

Fringe width = 21 mm

Explanation:

Fringe width is given by the formula

$\beta = \frac{\Lambda L}{d}$

here we know that

$\Lambda = 564 nm$

L = 4.0 m

d = 0.108 mm

now from above formula we will have

$\beta = \frac{(564 \times 10^{-9})(4.0 m)}{0.108\times 10^{-3}}$

$\beta = 0.021 meter$

so fringe width on the wall will be 21 mm

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3 years ago

a 3 kg piece of putty that is moving with a velocity of 10 m/s collides and sticks to an 8 kg bowling ball that was at rest. wha

defon

The final velocity is 2.7 m/s

Explanation:

We can solve this problem by using the principle of conservation of momentum: in fact, in absence of external forces, the total momentum of the system must be conserved before and after the collision.

Therefore we can write:

$p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v$

where:

$m_1 = 3 kg$ is the mass of the putty

$u_1 = 10 m/s$ is the initial velocity of the putty (we take its direction as positive direction)

$m_2 = 8 kg$ is the mass of the ball

$u_2 = 0 m/s$ is the initial velocity of the ball (at rest)

$v$ is the final combined velocity of the two putty+ball

Re-arranging the equation and substituting the values, we find the final combined velocity:

$v=\frac{m_1 u_1 + m_2 u_2}{m_1+m_2}=\frac{(3)(10)+0}{3+8}=2.7 m/s$

And the positive sign indicates their final direction is the same as the initial direction of the putty.

Learn more about momentum here:

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brainly.com/question/6573742

brainly.com/question/2370982

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#LearnwithBrainly

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3 years ago

a sound with a constant frequency is produced by the siren on top of a firehouse. Compared to the frequency produced by the sire

polet [3.4K]

There's an effect called The Doppler Effect, that's the "up and down" sound.
That frequency is 1.8mm and 115 per minute.

(Hope this helped.)

3 0

4 years ago