5. A mass-spring system oscillates with a period of 22 s. What would be the period of the system if the mass and the spring constant were both increased by a factor of four?
O A the period would decrease by half
O B. the period would remain the same
O C the period would be multiplied by the square root of two
O D the period would double

The magnets are probably damaged or there not strong enough to attached to the refrigerator

Ithink it’s: light bounce if off a mirror

I’m not sure about this question

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.