Consider a 500-kg solar-powered aircraft carrying 28 m2 of solar cells with 15% efficiency. The solar constant (power available from the sun per unit area) is 1.0 kW/ m2. Assume that 30% of engine power is spent on verti- cal climb; the rest goes into horizontal propulsion. De- termine the maximum vertical speed of this aircraft.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

a skateboard rolling across the street - apex