Object a attracts objects with a gravitational force of 5 newtons from a given distance. if the distance between the two objects is reduced in
half, what will be the changed force of attraction between them?
a 2.5 newtons
b. 10 newtons
c 15 newtons
d. 20 newtons
e 25 newtons

Awind turbine is initially spinning at a constant angular speed. as the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.173 rad/s2. after making 2870 revolutions, its angular speed is 132 rad/s. (a) what is the initial angular velocity of the turbine? (b) how much time elapses while the turbine is speeding up?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water