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umka21 [38]
3 years ago
11

Hey anyone here I'm ban 2 mint ago my I'd is aron7 I talk to Rachel anybody present therw​

Physics
2 answers:
pishuonlain [190]3 years ago
8 0

sign out and log in again...if does not work then make a new account

gtnhenbr [62]3 years ago
5 0

Answer:

follow me and mark me brainliest

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What’s the velocity of a bike ride taking 45 mins over a distance of 4km
Y_Kistochka [10]

The <u>speed</u> of the ride is

Speed = (distance covered) / (time to cover the distance)

Speed = (4,000 m) / (45 min)

Speed = <em>88.89 m/s</em>

Speed = <em>1.481 m/s</em>

Speed = <em>5.333 km/hr</em>

There's not enough information given in the question to calculate the velocity of the ride.  For example ...

-- If the ride was completely in a straight line, then the velocity would be exactly equal to the speed.

-- If the rider went 2km from his house and then 2km back home again, his velocity for the whole ride would be zero.

We just don't know from the information given.

8 0
3 years ago
you place a one-liter substance in a 2-liter bottle and tightly cover the bottle. the substance expands until it completely fill
9966 [12]

Answer:

The substance in is at state of gas.

Explanation:

Please see attavhed document

Download docx
4 0
2 years ago
List two pieces of evidence<br> related to this picture
tatyana61 [14]

Answer:

there was a crash you can tell cause of the 2 cars the dog is curious on what happened, you can tell because the dog is looking at the cash

4 0
3 years ago
Read 2 more answers
the distance of a planet from its sun is 19000000 miles. if there are 29400000 seconds in one orbit, find the speed of the plane
lisabon 2012 [21]
Orbit circumference 
<span>= 2 pi *1.9*10^7 miles </span>

<span>time for orbit trip = 2.9*10^7 s </span>

<span>speed = 2 pi *1.9 / 2.9 miles/second </span>

<span>= 4.12 miles/second </span>

<span>You did not say what units </span>
<span>in miles per hour, multiply by 3600 and get </span>
<span>14,820 miles/hour</span>
8 0
4 years ago
The armature of a motor is accelerated uniformly from rest to a rotational velocity of 1800 rev/min in 10 seconds. the rotationa
Liono4ka [1.6K]
The initial angular velocity of the motor is zero, while the final angular velocity is 1800 rev/min. Let's convert this into rad/s, keeping in mind that
1 rev = 2 \pi rad
1 min = 60 s
we have
\omega_f = 1800  \frac{rev}{min}  \cdot  \frac{2 \pi rad/rev}{60 s/min}=188.4 rad/s

And so now we can calculate the angular acceleration of the motor:
\alpha =  \frac{\omega_f - \omega_i }{t} = \frac{188.4 rad/s -0}{10 s}=18.8 rad/s^2
7 0
4 years ago
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