Safwan

How long will it take to fill the pool to a depth of 1.3 m if water flows from the hose at a speed of 0.45 m/s?

t= ??

**please include units of time that you used**

A scuba tank, when fully submerged, displaces 16.5L of seawater. The tank itself has a mass of 14.0 kg and, when "full," contains 4.81 kg of air.

a)Assuming only a weight and buoyant force act, determine the net force (magnitude) on the fully submerged tank at the beginning of a dive (when it is full of air).

b) Assuming only a weight and buoyant force act, determine the net force (magnitude on the fully submerged tank at the end of a dive (when it no longer contains any air).

every few hundred years most of the planets line up on the same side of the sun. Calculate the total force on the Earth due to Venus, Jupiter, & Saturn, assuming all 4 planets are in line. The masses are Mv = 0.815Me, Mj = 318Me, Ms = 95.1Me, and their mean distances from the sun are 108, 150, 778, & 1430 million km, respectively. What fraction of the Sun's force on the Earth is this

Me (mass of Earth) = 5.98 x 10^24 kg

G = 6.67 x 10^-11 N * M^2/Kg^2

The only equation I know is: F = G * M1M2/r^2

You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating how much weaker gravity is 700 km above the Earth's surface.

(delta g/g)= ? %

One 3.4kg paint bucket is hanging by a massless cord from another 3.4kg paint bucket, also hanging by a massless cord, as shown in the figure .

1) If the buckets are at rest, what is the tension in the lower cord?

2) If the buckets are at rest, what is the tension in the higher cord?

3) If the two buckets are pulled upward with an acceleration of 1.30m/s^2 by the upper cord, calculate the tension in the lower cord?

4) If the two buckets are pulled upward with an acceleration of 1.30 by the upper cord, calculate the tension in the higher cord?

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i have this crush on this person for a really long time. but i haven't talked to her in a while. but the feelings are coming back, i just want to know if i should make a move?