Answer:
Same mass
Explanation:
5kg and 5kg are the same that's the explanation
Answer:
![v_0=9.9\ m.s^{-1}](https://tex.z-dn.net/?f=v_0%3D9.9%5C%20m.s%5E%7B-1%7D)
Explanation:
Given:
- angle of launch of projectile from horizontal,
![\theta=15^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D15%5E%7B%5Ccirc%7D)
- range of projectile,
![R=5\ m](https://tex.z-dn.net/?f=R%3D5%5C%20m)
<u>We have formula for the range of projectile:</u>
![R=\frac{v_0^2\times sin\ 2\theta}{g}](https://tex.z-dn.net/?f=R%3D%5Cfrac%7Bv_0%5E2%5Ctimes%20sin%5C%202%5Ctheta%7D%7Bg%7D)
putting the respective values
![5=\frac{v_0^2\times sin\ 30^{\circ}}{9.8}](https://tex.z-dn.net/?f=5%3D%5Cfrac%7Bv_0%5E2%5Ctimes%20sin%5C%2030%5E%7B%5Ccirc%7D%7D%7B9.8%7D)
is the velocity with which Tom should jump to land on the other roof.
Scale: (soft 1-->6 hardest)
<span>1=Talc 2=Gypsum 3=Calcite 4=Fluorite 5=Apatite 6=Orthoclase
</span>Mineral #1 can only scratch two other minerals therefore it must have a hardness level of 2+1=3 which is Calcite. (scratches talc, gypsum)
Mineral #2 can scratch four other minerals therefore it must have a hardness level of 4+1=5 which is Apatite. (scratches all but Apatite, Orthoclase)
Looking through the possible conclusions.. It looks like answer is D.
The speed of the car is exactly 150/7200 km/sec, or 125/6 meters/sec.
In more familiar units, that speed is equivalent to ...
-- (20 and 5/6) meters/sec
-- 75 km/hour
Using current technology, useful parallax measurements can only be found for stars up to about 340 light years (100 parsecs) away.