Geosynchronous satellites orbit the earth at a distance of 42 000 km from the earth's center. their angular speed at this height is the same as the rotation rate of the earth, so they appear stationary at certain locations in the sky. what is the force acting on a 1 500-kg satellite at this height?

Asher cycles 12 miles in 16 hours. what is his speed?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?