Answer:
vpg = 0.064 N
Explanation:
Upthrust = Volume of fluid displaced
upthrust liquid on the cube g=10ms−2
vpg =0.2 x 0.2 x 0.2 x0.8 x 10= 0.064N
vpg = 0.064 N
hope it helps.
I think the answer is option c
Permanent press setting is hotter than normal setting
<h3>✨ <u>ASSERTION</u> :-</h3>
- Two bodies of masses M and m (M>m) are allowed to fall from the same height . If the air resistance for each be the same then both the bodies will reach the earth simultaneously .
<h3>✨ <u>REA</u><u>SON</u> :-</h3>
- For same air resistance, acceleration of both the bodies will be same .
[A] If both assertion and reason are true and reason is the correct explanation of assertion .
[B] If both assertion and reason are true but reason is not the correct explanation of assertion .
[C] If assertion is true but reason is false
[D] If both assertion and reason are false
✍️ The force acting on the body of mass M are [its weight] ‘<u>Mg</u>’
- Mg are acting vertically downwards
- And air resistance F acting vertically upward .
Hence,
⚡ Now, M > m therefore, the body with larger mass will have greater acceleration and it will reach the ground first .
Answer:
Explanation:
Let force acting on the card = F . let its x component be F_x
F_x . 3 = 300
F_x = 100
similarly ,
F_y . 4 = 400
F_y = 100
Total F = √ 3² + 4²
= 5 N
2 ) Force of the cart on the student = 5 N ( Reaction force)
3) Distance moved by the cart = 3 + 4 = 7m
4) magnitude of displacement = 5 m