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Otrada [13]
2 years ago
5

Which of the following is a scalar quantity

Physics
1 answer:
Kay [80]2 years ago
7 0

Answer :

I think it is A. Distance

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Number 3,4, 6, and 8
siniylev [52]

1. When the object is waiting to be released, it is storing a lot of potential energy. When it is released, the potential energy that was once stored is converted into kinetic energy.

3 0
2 years ago
If a builder of mass 75kg climbs a vertical ladder of 25m how much energy has she gained ?
erica [24]
So,

GPE (graviational potential energy) = mass x g x height

GPE is depends on where zero height is defined.  In this situation, we define h = 0 as the initial height.

GPE = 75 \ kg*9.8 \ \frac{m}{s^2}*25 \ m

GPE = 18,375 \frac{kg*m^2}{s^2}

GPE = 18,375 \ joules(J) \ or \ 18.375 \ kilojoules(kJ)

The builder has gained 18.375 kJ of PE.
4 0
2 years ago
6. An object moves along the x-axis. The graph shows its position x as a function of time t. Find
raketka [301]

Answer: 1.5 m/s

Explanation:

9-3/5-1= 6/4= 3/2= 1.5

Used x2-x1/t2-t1 to get average velocity from point b to c

7 0
3 years ago
Un movil avanza a 20 m/s y recorre una distancia de 800 km. Determinar el tiempo en horas que utiliza
Nataly_w [17]

Answer:

t = 11.1 hours

Explanation:

The question says that, "A mobile advances at 20 m / s and travels a distance of 800 km. Determine the time in hours you use".

Given that,

Speed of a mobile, v = 20 m/s = 72 km/h

Distance, d = 800 km

We know that,

Speed = distance/time

So,

t=\dfrac{d}{v}\\\\t=\dfrac{800}{72}\\\\t=11.1\ h

So, it will take 11.1 hours.

7 0
3 years ago
Briefly explain what water is.in your explanation include what a water molecule is,what elements makes up water and draw a molec
djyliett [7]
Water is a naturally abundant polar solvent that is essential for life as we know it. It consists of two hydrogen atoms covelently bonded to oxygen making a H-O bond angle of 120 degrees.

8 0
3 years ago
Read 2 more answers
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