Atennis ball is hit at an angle of 20° to the horizontal with the velocity of 20 m/s. what is its velocity in the y direction? a-7.2 m/s b-19.7 m/s c-6.8 s d- 0.9 degrees

Why is alchemy not considered to be a science ?

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd question 6 options: 3000 joules 30 joules 320 joules 3200 joules