Separation by density filtration because lead slightly interacts with magnets also.
Answer:
Explanation:
2.1 km = 2100 m
1.68 km = 1680 m
a ) Time taken by wild beast to travel 1680 m
= 1680 / 19 = 88.42 s
Time taken by wild beast to travel 2100 m
2100 / 19 = 110.52 s
distance travelled by chicken in 88.42 s
= 88.42 x 3.3 = 291.78 s
Its distance from the end point
= 2100 - 291.78 = 1808.22m
b ) Time taken by chicken to travel 2100 m
= 2100 / 3.3 = 636.36 s
Both reach simultaneously so , time of resting by wild beast
= 636.36 - 110.52 = 525.84 s .
.6(9.81)(3)
=17.65
18 J
2 significant figures
Answer:
Lower than it should be.
Explanation:
Hello.
In this case, since the density is computed by:
![\rho =\frac{m}{V}](https://tex.z-dn.net/?f=%5Crho%20%3D%5Cfrac%7Bm%7D%7BV%7D)
And we obtain the volume of the solid by substracting the mass of the water and the solid minus the mass of water:
![V_{solid}=V_{solid\ with \ water}-V_{water}](https://tex.z-dn.net/?f=V_%7Bsolid%7D%3DV_%7Bsolid%5C%20with%20%5C%20water%7D-V_%7Bwater%7D)
If some water is splashed out of the cylinder, the volume of water will be lower than originally measured, it means that the volume of the solid will be higher than real. In such a way, since the density is in an inversely proportional relationship with volume, as the volume of the solid is wrongly increased, therefore the density of the solid will be lower than in should be.
Regards.