Answer:
Explanation:
Simply put, because weight is a kind of Force.
True. Because say if you go to a junk place where you can break anything and you decide to squish a printer with a car and when you go look at the printer it’s all deformed there’s really no way that you can fix it. Lol that was an example
We know that frequency is an inverse value of time this implies that time is the inverse value of frequency .
Now since <em>f</em> is <em>40kHz</em><em>,</em><em> </em>we can calculate period or duration for that matter time.
Hope this helps.
r3t40
Explanation:
"Rank the magnitude of the torque the signs exert about the point at which the rod is attached to the side of the building."
Torque is the cross product of the radius vector and force vector.
τ = r × F
The magnitude of the torque is the force times the perpendicular distance. In other words, it is the force times distance times the sine of the angle between them.
τ = F r sin θ
Let's assume the length of each rod is L meters. In each case, the weight is a vertical force, so the perpendicular distance is the horizontal distance between the wall and the sign.
A) τ = (50 kg × 10 m/s²) (L sin 30° m)
τ = 250L Nm
B) τ = (100 kg × 10 m/s²) (L m)
τ = 1000L Nm
C) τ = (50 kg × 10 m/s²) (L sin 60° m)
τ ≈ 433L Nm
D) τ = (90 kg × 10 m/s²) (L m)
τ = 900L Nm
Ranked from greatest to least:
B > D > C > A
Answer:
A. It said that the planets have epicycles.
Explanation:
Ptolemy's model had Earth at the center, and the moon's revolved around the planets instead of the planets revolving around the moon and sun. The planets' orbits' moved instead of the planets as well.