Which type of wave does NOT have a crest?

A. a transverse wave

B. an oscillating wave

C. a longitudinal wave

D. an electromagnetic wave

A hot air balloon competition requires a balloonist to drop a ribbon onto a target on the ground. Initially the hot air balloon is 50 meters above the ground and 100 meters from the target.

A toy boat of mass 1.0 kg is pulled by a child using a string at an angle of 45 o to the surface of the water with a constant force of 2.0 N. The boat accelerates constantly from rest to 0.20 m/s in 0.50 s.

A water wave has a frequency of 2 hertz and a wavelength fo 5 meters. Calculate is speed

To determine waves frequency you must know the what

Should rare earth metals continue to be used in magnets? How come?

How much force is needed to stretch a spring 1.2 m if the spring constant is 8.5 n/m? 7.1 n 7.3 n 9.7 n 10.2 n

What forces are equal and opposite sides

B. how does the separation between galaxies compare to the separation between stars? based on your answer, discuss the likelihood of galactic collisions in comparison to the likelihood of stellar collisions.

Period vs string length String length (cm) 100cm, 75cm, 50cm, 25cm Each one below matches the strength length above time 10 periods (s) - trial 1 time for 10 periods (s) - trial 2 time for 10 periods (s) - trial 3

How could you determine the instantaneous speed during a trip?