PLEASE HELP 10 POINTS IM BEING TIMED Kayla knows that compounds can be either ionic or covalent. She thinks this unknown compound must be ionic. Is she correct, and why or why not?
A
Yes, because the unknown compound has a high melting point caused by a weak ionic bond.
B
Yes, because the unknown compound has a high melting point caused by a strong ionic bond.
C
No, because the unknown compound has a high melting point caused by a weak covalent bond.
D
No, because the unknown compound has a high melting point caused by a strong covalent bond.

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.