2 years ago

Why are triangles important when making structures

1 answer:

4 0

So when making structures you have to have squares rectangles right and a triangle and another triangle equals a square so thats all there is to it

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Tyson throws a shot put ball weighing 7.26 kg. At a height of 2.1 m above the ground, the mechanical energy of the ball is 172.1

max2010maxim [7]

Answer:

2.5 m/s

Explanation:

Mechanical energy is the sum of the potential and kinetic energy.

E = PE + KE

E = mgh + ½mv²

172.1 J = (7.26 kg) (9.8 m/s²) (2.1 m) + ½ (7.26 kg) v²

v = 2.5 m/s

7 0

2 years ago

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If we want to describe work , we must have what ?

ivanzaharov [21]

An external force that is being applied in the direction of the displacement

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3 years ago

Would it be m/s or kg?

Nesterboy [21]

Answer:

m.s

Explanation:

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2 years ago

What are the magnitude and direction of the acceleration of an electron at a point where the electric field has magnitude 6100 n

Hoochie [10]

Force on electron due to electric field is given by

$F = eE$

$F = 1.6 * 10^{-19}* 6100$

$F = 9.76 * 10^{-16} N$

now the acceleration is given by

$a = \frac{F}{m}$

$a = \frac{9.76 * 10^{-16}}{9.1 * 10^{-31}}$

$a = 1.07 * 10^{15} m/s^2$

so above is the magnitude of acceleration and its direction is opposite to field as electron is negatively charged so direction is towards SOUTH

4 0

3 years ago

Neutral substances have a pH of _____.

Alinara [238K]

Explanation:

Substances become neutral at the number 7 because at this point, the acid and Base are equal and becomes neutralized

4 0

3 years ago