Answer:
Kinetic energy of the brick is 26.4 Joule
Answer:
11.1 cm
Explanation:
Let d be the depth upto which box dipped into water.
Volume of water displaced
.12\times .12\times d m^3\\
=.0144d
Weight of water displaced = upthrust
=.0144d\times 10^3\times g\\ [ density of water is 1000kg /m³]
=14.4dg This will act upwards.
Total downward force = 1.2 +.4 = 1.6 g
For equilibrium
1.6g = 14.4 gd
d = .111 m
=11.1 cm.
Answer:
Option(b) is the correct answer to the given question .
Explanation:
The taste of the acids are sour due to H- ions where the taste of bases are bitter due to the OH-ions. The HP value of the acids are less than 7 where as the HP value of bases are greater than 7 .
The POH value of the acids are greater than the 7 and POH value of acids are less than the 7 . HP and the POH scale are used to find the difference between acid and the base.
- All the other options are not correct for the acids that's why these are incorrect option .
Therefore Option(b) is the correct answer .
Answer:
Its a cinder cone cause after it all falls down to make deposits.
Answer:
121km/h
Explanation:
Let speed of boat=xkm/h
Speed of water flow=33 km/h
Speed upstream=(x-33)km/h
Speed downstream=(x+33)km/h
Time=44 hrs
Time =77 hrs
We have to find the speed of boat.
Using the formula
Upstream distance=Downstream distance
Hence, the speed of boat=121km/h
