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sertanlavr [38]
3 years ago
9

1. How far does a skydiver fall

Physics
1 answer:
GREYUIT [131]3 years ago
5 0

Free fall without air resistance:

g=9.81 m/s²

t=235 s

h=?

h=0.5*g*t²

h=0.5*9.81*235²

h=270879m =270 km

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Which statements best describe displacement? Check all that apply.
Reika [66]

Answer:

2 number

Explanation:

Displacement is a vector. This means it has a direction as well as a magnitude and is represented visually as an arrow that points from the initial position to the final position.

8 0
2 years ago
PLEASE HELP ME!!!
denis-greek [22]
The reason for that is that P-waves (primary waves) travel faster than S-waves (secondary waves).

If we call v_p the speed of the primary waves and v_s the speed of the secondary waves, and we call S the distance of the seismogram from the epicenter, we can write the time the two waves take to reach the seismogram as
t_P =  \frac{S}{v_P}
t_S= \frac{S}{v_S}

So the lag time between the arrival of the P-waves and of the S-waves is
\Delta t = t_S-t_P= \frac{S}{v_S}- \frac{S}{v_P}= S(\frac{1}{v_S}- \frac{1}{v_P})
We see that this lag time is proportional to the distance S, therefore the larger the distance, the greater the lag time.
6 0
3 years ago
A coil of wire with 60 turns lies on the plane of the page, and a uniform magnetic field points into the page with a strength of
baherus [9]

Answer:

0.85V

Explanation:

The emf is calculated by using the Lenz's Law

\epsilon=-\frac{\Delta\Phi_B}{\Delta t}

But for this case we have that the magnetic field is constant. Hence we have

\epsilon=-\frac{B(A_{2}-A_{1})}{t_2-t_1}=-\frac{(1.10T)(0.270m^{2}-0.89m^{2})}{0.8s}\\\\\epsilon=0.85V

where we have taken that the intial time is t1=0

I hope this is useful for you

regards

4 0
3 years ago
DO I JUST DRAW A SIMPLE WATER MOLECULE? Sketch a space filling model of a water molecule, show polarity by label positive and ne
Sophie [7]
You sketch a water molecule and show a partial positive charge on the two Hydrogen atoms and a partial negative charge on the oxygen atom.
6 0
3 years ago
6. 498.82 mg comverted to kg​
Ivanshal [37]

Answer:

0.00049882 kg

........................

6 0
3 years ago
Read 2 more answers
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