3 years ago

Why is it good practice for scientists to repeat trails

1 answer:

8 0

It makes the data thet they collect more reliable so if they need the data again, they have already tested it a few times so therefor they know that it is right.

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How much will be the net displacement if a car travels 6 km east and then travels 14 km west

ExtremeBDS [4]

8km is the displacement

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2 years ago

Differences between looping and simersaulting

Anika [276]

Somersaulting- for longer distances.It bends the narrow end in the direction it wants to go & takes grip with tentacles. It releases the broad end and straightens up. like this it continues. looping- for shorter distances.

Hope this helps

3 0

2 years ago

an 1150kg elevator moving down speeds up at a rate of 3.5m/s. what is the tension in the supporting cables?

gtnhenbr [62]

Answer:

The tension force in the supporting cables is 7245N

Explanation:

There are two forces acting on the elevator: the force of gravity pointing down (+) with magnitude (elevator mass) x (gravitational acceleration), and the tension force of the cable pointing up (-) with an unknown magnitude F. The net force is the sum of these forces:

$F_{net} = F_g - F = m\cdot g - F\\$