Your answer would be 4.0 hz.
vacuum walls: prevents heat loss by comduction and radiation
silvered walls prevent loss by radiation
ceramic base prevents loss by conduction
cap prevents by radiation and convection and reduces by comduction
<u>Statement</u><u>:</u>
A force is required to accelerate a 600 g ball from rest to 14 m/s in 0.1 s.
<u>To </u><u>find </u><u>out</u><u>:</u>
The force required to accelerate the ball.
<u>Solution</u><u>:</u>
- Mass of the ball (m) = 600 g = 0.6 Kg
- Initial velocity (u) = 0 m/s [it was at rest]
- Final velocity (v) = 14 m/s
- Time (t) = 0.1 s
- Let the acceleration be a.
- We know the equation of motion,
- v = u + at
- Therefore, putting the values in the above formula, we get
- 14 m/s = 0 m/s + a × 0.1 s
- or, 14 m/s ÷ 0.1 s = a
- or, a = 140 m/s²
- Let the force be F.
- We know, the formula : F = ma
- Putting the values in the above formula, we get
- F = 0.6 Kg × 140 m/s²
- or, F = 84 N
<u>Answer</u><u>:</u>
The force required to accelerate the ball is 84 N and this force acts along the direction of motion.
Hope you could understand.
If you have any query, feel free to ask.
Answer:
no.... do u remember me........ im cassidy and me and my friends are not happy with u............. were going to kill u the same way that u killed us!!!!!
Explanation:
Kepler's 3rd law of planetary motion is exactly
what we need in order to answer this one:
(orbital period)² / (orbital radius)³ =
the same number for all bodies orbiting the sun
Let's call that number 'K' just for convenience.
So we know that T₀² / R₀³ = K
We're going to be looking for 'T', so let's rearrange the equation now.
Multiply each side by R₀³ .
Now it says
T₀² = K R₀³
Now, take the square root of each side, and we have
T₀ = √ (K R₀³) .
Now the radius is increased to (1.04 R₀).
We want to find the new T .
T = √ K · (1.04 R₀)³
= √ K · 1.124864 R₀³
Pull that decimal out of the radical, by taking its square root:
= 1.0606 √K · R₀³
T = 1.0606 T₀
The orbital time has increased by 6% .
_________________________________________
I suspect we probably could have said that since T varies
as R^1.5 power, we should look for (1.04)^1.5 power.
(1.04)^1.5 = 1.0606 <== bada-bing
