Answer:
Im answering for free points sry
Explanation:
...
The answer is apparent weight is zero.
You are still accelerating downwards at 9.8m/s^2 (if you are on Earth).
You still are being affected by the Earth's gravity.
Not all because of the previous two statements.
Not none because apparent weight is zero as you are falling.
Answer:
I don't know this answer questions
Let's take the actual question section all by itself:
If an object displaces 40 grams of water, then the buoyant force on the object is equal to the weight of 40 grams of water (Archimedes' principle)... which is equal to the weight of 40 grams of ANY substance.
Weight = (mass) x (gravity)
Weight = (0.040 kg) x (9.8 m/s²)
<em>Weight = 0.392 Newton</em>
so that's the buoyant force acting on the object.
Now, to deal with the first phrase of the question ... everything before the first comma ... you said "100 grams is equal to 1 newton of force". This phrase is really quite meaningless, and there's nothing to be done with it.
A quantity of mass is never "equal to" a force.
Fortunately, whatever this is supposed to mean, it's not needed to answer the rest of the question.
Answer:
625000 N/ m
Explanation:
m= 20 kg
v= 30 m/s
x= 12 cm
k = ?
Here when the mass when hits at spring its speed is
Vi= 30 m/s
Finally it comes to rest after compressing for 12 cm
i-e Vf = 0 m/s
Distance= S= 12 cm = 0.12 m
using
2aS= Vf2 - Vi2
==> 2a ×0.12 = o- 30 × 30
==> a = 900 ÷ 0.24 = 3750 m/sec2
Now we know;
F = ma
F= -Kx
==> ma= -kx
==> 20 × 3750 = -K × 0.12
==> k = 625000 N/ m
