Awind tunnel consists of a settling chamber, test section and diffuser. the cross sectional area of the settling chamber is 10 f2, the test section if 4f2, and the diffuser is 6 f2. if the wind tunnel is operating in denver, colorado at an altitude of 5,000 feet, and the speed of the air in the test section is 200 f/s, determine the test section static pressure, and the speed and static pressure in the settling chamber and diffuser. assume the flow is incompressible.

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?

Difference between natural and artifical magnet