Planet x rotates in the same manner as the earth, around an axis through its north and south poles, and is perfectly spherical. an astronaut who weights 943.0n on the earth weights 915.0n at the north pole of planet x and 850.0n at its equator. the distance from the north pole to the equator is 18,850 km., measured along the surface of planet x.

(a) how long is the day on planet x?
(b) if a 45, 000kg satellite is placed in a circular orbit 2000km above the surface of planet x, what will be its orbital period.

Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i. e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation