3 years ago

Can u plz help me with my hw

Physics

1 answer:

Mazyrski [523]3 years ago

7 0

Answer:

1) 4 x 25m = 100m

2) 0 because after 4 lengths, he's back at the starting block.

3) speed is distance over time so speed here is 100m/125s = 0.8m/s

4) ...

5) 100m / 1.25m/s = 80s

6.a) 100m / 0.5m/s = 200s

7.b) ... can't draw this now..

You might be interested in

Please someone answer this

blondinia [14]

Answer:

you just have to draw a line from the eye reflecting from the mirror to the object shown.

Explanation:

Dont come at me if its wrong. I think thats what their asking of you.

8 0

3 years ago

What are 3d glasses made of?

masha68 [24]

<span>a) two filters with vertical polarization
</span>

8 0

4 years ago

Read 2 more answers

A rabbit with a mass of 2.0 kg accelerates at 2.0 meters per second squared. Find the net force of the rabbit

scZoUnD [109]

Answer:

Explanation:

Force = mass x acceleration

Given

Mass = 2.0kg

Acceleration = 2.0m/s^2

Force = 2.0 x 2.0

= 4N

5 0

4 years ago

Read 2 more answers

There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel u

amid [387]

Answer:

$L = 96.2 dB$

Explanation:

As we know that the level of intensity is given as

$\beta = 10Log(\frac{I}{I_o})$

here we know

$\beta = 104 dB$

$104 = 10Log(\frac{I}{10^{-12}})$

$I = 0.025 W/m^2$

now the sound is travelling in all possible directions so we have

$\frac{I_1}{I_2} = \frac{r_2^2}{r_1^2}$

$\frac{0.025}{I_2} = \frac{10^2}{4.1^2}$

$I_2 = 4.2 \times 10^{-3} W/m^2$

now for level of sound we have

$L = 10Log(\frac{4.2 \times 10^{-3}}{10^{-12}})$

$L = 96.2 dB$

5 0

3 years ago

Carbon tetrachloride (CCl4) is ionic or convalent

timama [110]

Covalent, they’re between two non-metals.

8 0

3 years ago

Read 2 more answers