Answer:
D) The given reaction is Exothermic, because energy is released
Explanation:
Here, given that Zinc is added to a beaker containing hydrochloric acid.
Also, the beaker gets warm.
⇒The energy is released in the form of heat.
EXOTHERMIC reactions are those type of reactions in which energy is released in the form of heat.
When the beaker gets warm, the reaction is exothermic in nature.
Hence, the given reaction is Exothermic, because energy is released
C.reproducing is think and if wrong I'm so very sorry
Answer:
violet
Explanation:
violet has shortest wavelength
Answer:
The orbital speed of this second satellite is 5195.16 m/s.
Explanation:
Given that,
Orbital radius of first satellite 
Orbital radius of second satellite 
Mass of first satellite 
Mass of second satellite 
Orbital speed of first satellite = 4800 m/s
We need to calculate the orbital speed of this second satellite
Using formula of orbital speed

From this relation,

Now, 

Put the value into the formula


Hence, The orbital speed of this second satellite is 5195.16 m/s.
Answer:
0.29 m
Explanation:
9 mm = 0.009 m in diameter
Cross-sectional area 
Let the tensile modulus of Nickel
.
The elongation of the rod can be calculated using the following formula:
