Question

A simple pendulum takes 42 s to complete 20 oscillations, the time period of the pendulum is
la) 2.2s
(b) 2.3 s
(c) 2.1s
(d) 2.4s​

Answer 1

Answer:

c 2.1

Explanation:

time period= total time/ frequency

time period= 42/20=2.1

Answer 2

Answer:

S5 So transportation of substances in the plant are affected. As xylum is responsible for the transport of water ,mineral and phloem is responsible for food Transportation

L-2 Because arteries take oxygen rich blood from the heart and veins bring back oxygen poor blood to the heart. There are four chambers in the heart .These chambers are separated from each other by the valves