A child in a tree house is playing with a toy rocket. The tree house is 6.8 meters above level
ground. If she launches the rocket at a velocity of 5.5 m/s at a 60° angle, how far horizontally
from the launch position will the rocket travel before it lands?
A 1.3 m
B. 2.7m
C. 4.8 m
D. 8.4 m

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?