Answer:
55.7 N
Explanation:
The density of aluminum is 2710 kg/m³. So its volume is:
V = (9 kg) / (2710 kg/m³)
V = 0.00332 m³
The apparent weight is the actual weight minus the buoyant force.
N = mg − B
N = mg − ρVg
N = g (m − ρV)
N = (9.8 m/s²) (9 kg − (1000 kg/m³) (0.0332 m³))
N = 55.7 N
Answer:
True a, c and d
Explanation:
The correct statements that should be included in the answers are:
a) True. Bowling balls are round
b) False. The balls have different colors
c) True. If the balls are made of a very hard material
d) True. If the balls have a smooth polished surface at the same time, but not soft
A jog because it helps to get the muscles moving and your heart pumping blood around your body.
I hope this helps.
Answer:
3 kg
Explanation:
Momentum before = momentum after
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
After jumping on the skateboard, the student and the skateboard have the same velocity, so v₁ = v₂.
m₁u₁ + m₂u₂ = (m₁ + m₂) v
(47.4 kg) (4.2 m/s) + m (0 m/s) = (47.4 kg + m) (3.95 m/s)
m = 3 kg
Answer:
what's that all about
hehehwhe
Explanation:
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