Use the formula for distance dropped from rest:
D = 1/2 a t^2 .
With no air resistance, you get about 8.8 sec.
I'm pretty sure you can fill in the missing work.
Answer:
Archimedes Principle states that "any body completely or partially submerged in water is acted upon by an upthrust force which is equal to the magnitude of Weight of the body."
Answer:
29.6 kg
Explanation:
Centripetal force = mass × centripetal acceleration
F = m v² / r
88.0 N = m (2.50 m/s)² / 2.10 m
m = 29.6 kg
Answer:
It would take the cyclist 2 hours to cycle to school.
Explanation:
5km/hr for 2 hours would be 10km.
Answer:
Direct current.
Explanation:
The electric current is defined as the electric charge flowing per unit time. There are two types of current i.e. direct current and alternating current. The unidirectional flow of current describes the direct current. It is said so because the direct current flows only in one direction. This type of current flows in semiconductors, insulators, conductors etc. It is also known as DC current.