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lys-0071 [83]
3 years ago
8

SO WASUPP... i havent been one in a whileeeeee

Physics
2 answers:
Tanya [424]3 years ago
8 0

hellooo nothing rlly u

ozzi3 years ago
6 0

helloo! i havent been on in a while either cause i decided not to cheat at all this year.. but i gave up on school

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A bicycle moves with a speed of 6 km/h for 2 hour and the speed of 4 km/h for the next 3 hours .find the average speed and the d
Mila [183]

Answer:

4.8 km/h

24 km

Explanation:

The distance traveled is:

d = (6 km/h) (2 h) + (4 km/h) (3 h)

d = 24 km

The average speed is distance divided by time:

s = (24 km) / (5 h)

s = 4.8 km/h

5 0
4 years ago
How long would it take for a rock falling 97.2 m/s to reach the ground from 100 meters
mote1985 [20]

Answer;

velocity(v) = 97.2 m/s ,

distance (S) = 100 m

determine time(t) = ?

  We know that,

               distance (S) = velocity(v) × time(t)

           So,      time (t) = distance ÷ velocity

                                   = 100 ÷ 97.2

                              <em>   t = 1.02 sec.</em>

<em>I hope this will help you.</em>

5 0
4 years ago
A current of 0.92 a flows in a wire. how many electrons are flowing past any point in the wire per second? the charge on one ele
Fantom [35]
The current is defined as the ratio between the charge Q flowing through a certain point of a wire and the time interval, \Delta t:
I= \frac{Q}{\Delta t}
First we need to find the net charge flowing at a certain point of the wire in one second, \Delta t=1.0 s. Using I=0.92 A and re-arranging the previous equation, we find
Q=I \Delta t= (0.92 A)(1.0 s)=0.92 C

Now we know that each electron carries a charge of e=1.6 \cdot 10^{-19} C, so if we divide the charge Q flowing in the wire by the charge of one electron, we find the number of electron flowing in one second:
N= \frac{Q}{q} = \frac{0.92 C}{1.6 \cdot 10^{-19} C}=5.75 \cdot 10^{18}
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3 years ago
What obstacles or challenges are encountered in magnetic levitation?
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3 years ago
What is called frictional force <br>​
baherus [9]

Answer:

<em>Friction, force that resists the sliding or rolling of one solid object over another.</em>

3 0
3 years ago
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