3 years ago

I need help with this question ASAP I am on a timer

Physics

1 answer:

Tom [10]3 years ago

4 0

First box and third box !

You might be interested in

27N-(u)(14kg)(9.8m/s^2)=0

atroni [7]

If u is about 0.2 (no unit) then the whole left side is zero.

4 0

3 years ago

What is her velocity

fenix001 [56]

The speed of something in any given direction.

7 0

3 years ago

In noisy factory environments, it's possible to use a loudspeaker to cancel persistent low-frequency machine noise at the positi

Vaselesa [24]

Answer:

7.39 m or 3.61 m

Explanation:

$\lambda$ = Wavelength

f = Frequency = 90 Hz

v = Speed of sound = 340 m/s

Path difference of the two waves is given by

$s_1-s_2=\frac{\lambda}{2}$

Velocity of wave

$v=f\lambda\\\Rightarrow \lambda=\frac{v}{f}\\\Rightarrow \lambda=\frac{340}{90}\\\Rightarrow \lambda=3.78\ m$

$s_1=s_2\pm\frac{\lambda}{2}\\\Rightarrow s_1=5.5\pm \frac{3.78}{2}\\\Rightarrow s_1=7.39\ m, 3.61\ m$

So, the location from the worker is 7.39 m or 3.61 m

7 0

3 years ago

When electrical energy is being used by an electric light, what really happens to the energy?

vitfil [10]

Energy is not created and not destroyed it will only change form

So heres your answer ; It is given off as other forms of energy/light and heat !!

=answer 2nd one

7 0

3 years ago

Read 2 more answers

A student bangs a brick at the head of a table. Three students are positioned equal distance from the head with their hands on t

iris [78.8K]

Explanation:

that the people closer too the head of the table will feel more vibrations than the people at the end of the table. since the vibrations will slow down as they travel farther down the table

Hope this helps!!

5 0

3 years ago