Answer:
825 kgm⁻³
Explanation:
ρ = density of wood = ?
ρ' = density of water = 1000 kgm⁻³
V = volume of wood = 10 x 4 x 2 = 80 cm³ = 80 x 10⁻⁶ m³
V' = Volume of water displaced = 10 x 4 x 1.65 = 66 cm³ = 66 x 10⁻⁶ m³
Using equilibrium of force in vertical direction
Force of buoyancy = Weight of the wood
ρ' V' g = ρ V g
ρ' V' = ρ V
(1000) (66 x 10⁻⁶) = ρ (80 x 10⁻⁶)
ρ = 825 kgm⁻³
Answer:
Thomson's cathode-ray tube experiments led him to develop the plum-pudding model, which stated that each atom had positively charged particles spread throughout its negatively charged matter. Reword the statement so it is true. ... More alpha particles were deflected than he expected.
Explanation:
Well.. I hope it helps you..
Just correct me if I'm wrong..
Answer:
90 ft/s is what i put. Let me know if its wrong
1) dc
2) ac
Because my dad said so
Answer:
42 minutes
Explanation:
First, let us find out the time required by the roommate, who is driving the truck, to reach the city.
We know that,
Now, you are planning to rest a bit after traveling for an hour. So,
distance covered in that 1 hour = 
time required by you to cover the total distance = 
If you wish reach at the destination half an hour (0.5 h) before your roommate, you can expend a total of 
throughout your journey.
Hence, you can rest for 
