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3 years ago

what is your weight in newtons if your potential energy is equal to 1000 joules and your mass is 60 kg

2 answers:

6 0

Your potential energy and mass don't tell what your weight is.

If I walk up from the first floor to the second floor, my weight hasn't
changed even though my potential energy has increased.

Alona [7]3 years ago

3 0

Weight force is equal to mass times the acceleration of gravity. Since we're close on earth gravity is about 9.8 m/s^2. Multiply 9.8 by 60 and you will get 588 N. The potential emergy doesn't really matter here (unless you were on a different planet with different acceleration of gravity and given a height about the ground).

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A student fills a tank of radius r with water to a height of h1 and pokes a small, 1.0 cm diameter hole at a distance h2 from th

Alik [6]

when a hole is made at the bottom of the container then water will flow out of it

The speed of ejected water can be calculated by help of Bernuolli's equation and Equation of continuity.

By Bernoulli's equation we can write

$Po + \frac{1}{2}\rho v_1^2 + \rho g h = Po + \frac{1}{2}\rho v_2^2 + \rho g *0$

Now by equation of continuity

$A_1v_1 = A_2v_2$

$\pi (0.2)^2 v_1 = \pi (0.01)^2 v_2$

from above equation we can say that speed at the top layer is almost negligible.

$v_1 = 0$

now again by equation of continuity

$\rho g h = \frac{1}{2} \rho v^2$

$v = \sqrt{2 g h}$

here we have

$h = h_1 - h_2$

$h = 0.50 - 0.03 = 0.47m$

now speed is given by

$v = \sqrt{2* 9.8 * 0.47}$

$v = 3.03 m/s$

7 0

3 years ago

Why are high tides found simultaneously on opposite sides of earth?

dexar [7]

Explanation:

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2 years ago

Under specific circumstances, waves will bend around obstacles. This type of bending is called

BartSMP [9]

That type of bending is called "diffraction" of waves.

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3 years ago

WILL MARK BRAINLIEST FOR CORRCET ANSWER!!!!!!!!!

jenyasd209 [6]

Answer:

It’s C

Explanation: