Answer:
Wc = 7.84 weight of crown
Ww = 7.84 - 6.86 = .98 weight of water displaced
Density = 7.84 / .98 = 8 crown is 8 X that of water
Since gold has a density of 19.3 that of water the crown is certainly not 100 percent (if any) gold
Answer:
what scenario i dont understand
Explanation:
step by step explenation
Answer:
the tangential velocity of the student is 4.89 m/s.
Explanation:
Given;
the radius of the circular path, r = 3.5 m
duration of the motion, t = 4.5 s
let the student's tangential velocity = v
The tangential velocity of the student is calculated as follows;
![v = \frac{2\pi r}{t} \\\\v = \frac{2 \pi \times 3.5}{4.5} \\\\v = 4.89 \ m/s](https://tex.z-dn.net/?f=v%20%3D%20%5Cfrac%7B2%5Cpi%20r%7D%7Bt%7D%20%5C%5C%5C%5Cv%20%3D%20%5Cfrac%7B2%20%5Cpi%20%5Ctimes%203.5%7D%7B4.5%7D%20%5C%5C%5C%5Cv%20%3D%204.89%20%5C%20m%2Fs)
Therefore, the tangential velocity of the student is 4.89 m/s.
We now that follow newton rules f=ma so net force equal to mass*acceleration=>f=50*1.5=75 N
True
In fact, the weight of an object on the surface of the Earth is given by:
![F=mg](https://tex.z-dn.net/?f=F%3Dmg)
where m is the mass of the object and
![g=9.81 m/s^2](https://tex.z-dn.net/?f=g%3D9.81%20m%2Fs%5E2)
is the gravitational acceleration on Earth's surface. If we use the mass of the object, m=3.0 kg, we find