In a study, the sample is chosen by writing everyone's name on a playing card, shuffling the deck, then choosing the top 20 cards What is the sampling method?
a. Simple
b. Random
c. Systematic
d. Stratified
e. Cluster
f. Convenience

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Which of the following statement is false