Answer:
it's C
Explanation:
have a nice day............
Answer: 2.4
Explanation:
cylinder moment of inertia = Iₔ = ½mrₔ² = ½2.84²
spherical shell moment of Iₑ = (2/3)mrₑ² = (2/3)6.47²
let the cylinder's angular speed be ωₔ and the spherical shell angular speed = ωₑ
total k.e = rotational k.e + linear k.e
for cylinder = ½Iₔωₔ² + ½mωₔ²rₔ² ---------------> [vₔ = rₔωₔ]
for sphere = ½Iₑωₑ² + ½mωₑ²rₑ²
=> ratio = 1
=> ωₔ²[½2.84² + 2.84²] / {ωₑ²[(2/3)6.47² + 6.47²]} = 1
ωₔ²(12.0894) = ωₑ²(69.7682)
(ωₔ/ωₑ)² = [69.7682] / [12.0894] ~= 5.77
=> (ωₔ/ωₑ) = √(5.77) = 2.4
Answer:
41.02m
Explanation:
Given parameters:
Initial velocity = 0m/s
Final velocity = 96km/hr
Time taken = 3.07s
Unknown:
Distance traveled by the time the final speed was achieved = ?
Solution:
To solve this problem, we first find the acceleration of the car;
Acceleration =
v is the final velocity
u is the initial velocity
t is the time taken
Now convert the the final velocity to m/s;
96km/hr to m/s;
1 km/hr = 0.278m/s
96km/hr = 96 x 0.278 = 26.7m/s
Now;
Acceleration = = 8.69m/s²
So;
v² = u² + 2as
v is the final velocity
u is the initial velocity
a is the acceleration
s is the distance
26.7² = 0² + 2 x 8.69 x s
712.89 = 17.38s
s = 41.02m
ACTIVITY LOG. First, 30+6+3=39. 39 minutes total.
Start: 9/12/10 Warm Up 6 minutes.
Mid: 9/12/10 Yoga 30 minutes.
End: 9/12/10 Cool Down 3 minutes.
Total: 39 minutes 9/12/10.
at least this is how my activity logs are.
Answer:
the answer will be radio because has the longest wavelength .