Answer:
1: 19,6 N | 2: 686 N | 3: 705,6 N
Explanation:
Just apply the formula:
1: 2 . 9,8 = 19.6 N
2: (60+10) . 9,8 = 686 N
3: [30 + (6 . 7)] . 9,8
[30 + 42] . 9,8
72 . 9,8 = 705.6 N
Just sum all the weights in the system and then multiply by gravity (9,8 in this case)
The answer to this question would be A. Interference. This is because when two sounds with slightly different frequencies creates a periodic variation in volume.
Somewhere in your book or your notes, you must have met the formula for the
gravitational attraction between two bodies. If you can go back and find it, you
only need to plug your numbers into that formula, and out will pop the answer.
Formula: <u>Force = G (mA x mB) / (distance)²</u>
If everything is in SI units, then G = 6.67 x10⁻¹¹ newton-meter² / kilogram²
You said that
mA = 8.1 kg
mB = 6.5 kg
distance = 0.5 m .
Force = (6.67 x 10⁻¹¹ nt-m²/kg²) (8.1kg x 6.5kg / (0.5m)² =
(6.67 x 10⁻¹¹ nt-m²/kg²) ( 52.65 kg² ) / (0.25 m²) =
<em>1.4047 x 10⁻⁸ newtons .</em>
That's roughly 5.052 x 10⁻⁸ ounce . (5% of one micro-ounce)
Answer:
The box 1 moves faster.
Explanation:
lets
Mass =m kg
Initial velocity = u m/s
Initial velocity of box = 0 m/s
Let stake mass of block = m
When ball bounces back:
The final speed of the box = v
Final speed of ball = - u
Pi = Pf ( From linear momentum conservation)
m x u + m x 0 = m ( - u) + m v
mu + mu = m v
v= 2 u
When ball get stuck :
The final speed of ball and box = v
Pi = Pf ( From linear momentum conservation)
m x u + m x 0 = (m+m) v
v= u /2
So the box 1 moves faster.
Answer:
Explanation:
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