Why is gravity so weird? .

Physics

2 answers:

skelet666 [1.2K]3 years ago

6 0

Answer:

Why is gravity so weird? No force is more familiar than gravity — it's what keeps our feet on the ground, after all. And Einstein's theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.

MA_775_DIABLO [31]3 years ago

6 0

Answer:

Because it pulls us down to the centre the earth

You might be interested in

What is the sun's spectrum

In-s [12.5K]

The sun spectrum is The Sun emits light primarily in the visible spectrum, but it also emits at other wavelengths, as illustrated in the following figure.

7 0

3 years ago

Sam has been working to improve his muscular fitness. He jumps rope and trains with weights. What will most likely be the result

const2013 [10]

Increased Bone Density

4 0

3 years ago

Read 2 more answers

A raft is made of 12 logs lashed together. Each is 45 cm in diameter and has a length of 6.5 m. How many people can the raft hol

tatyana61 [14]

Answer:

324 people

Explanation:

radius r = diameter / 2 = 45cm /2 = 22.5 cm or 0.225 m

We can calculate the total volume of the log by computing the volume of each cylindrical log:

$V = \pi r^2 L = \pi 0.225^2 * 6.5 = 4.6 m^3$

So the total volume of all 12 logs is

$12 * 4.6 = 55.135 m^3$

The weight that the raft can support, is the buoyancy force subtracted by its own weight.

The buoyancy force is basically the weight of the water is displaced, which is water density times volume. The log weight is also log density times its volume

$F = F_b - F_w = g\rho_wV - g\rho_rV = gV(\rho_w - \rho_r)$