Answer:
Distance d=8.63m
Explanation:
mass of object m=47.5 kg
Initial velocity vi=0 m/s
Magnitude of force on object F(t)=(17.0 N/s)t
To find
Distance
Solution
The rocket accelerates due to variable force so we apply Newtons second law but the acceleration will not be constant because the force is not constant
We use ax=Fx/m to find acceleration but it must be integrate to find velocity and then the distance that rocket travels
So
Distance d=8.63m
You are given the half life of an isoptope which is 5.2yr and the numer of days that it will decay which is 30 months. You are required to find the initial mass of the isotope.
An = A0*exptaveln2/t1/2
30 = A0 exp^(30/12 * ln2/5.2yr)
A0 = 21.5grams
Ice wedging, pressure release, plant root growth, and abrasion can<span> all </span>break<span> apart</span>rocks<span>. ... When plants grow in cracks in a </span>rock<span>, their roots </span>can<span> widen the cracks and force the </span>rock<span> apart. Rainwater fills small cracks in a </span>rock<span>. As the </span>water<span> freezes, it expands, widening the cracks and splitting apart the </span>rock<span>.</span>
Answer:
Angular velocity = 0.105 rads⁻¹
speed of tip = 0.00105 ms⁻¹
Explanation:
A second hand turns 2π rad each 60 sec
Thus: it has an angular speed given by
ω = 2π/T = 2π/60 = π/30 = 0.105 rad s⁻¹
The speed of the tip is given by
V= rω = 0.01 m × (0.105 rads⁻¹)
= 0.00105 ms⁻¹