Quiet operation of a fan depends mostly upon the

A. motor balance.

B. balance of the blades.

C. weight of the blades.

D. material of the blades

A train starts from rest and accelerates uniformly, until ithas traveled 5.6 km and acquired a velocity of 42 m/s. Thetrain then moves at a constant velocity of 42 m/s for 420 s. The train then slows down uniformly at 0.

Forms a thin layer of gases around earth

A party mix is made by adding nuts that sell for $2.502.50 per kg to a cereal mixture that sells for $11 per kg. How much of each should be added to obtain 6060 kg of a mix that will sell for $2.102.10 per kg

Astronomers discover an exoplanet, a planet obriting a star other than the Sun, that has an orbital period of 3.27 Earth years in a circular orbit around its star, which has a measured mass of 3.03*1030 kg. Find the radius of the exoplanet's orbit.

A railway wagon of mass 20t is moving along a level track at 10km/h when it collides and couples together with a second wagon of mass 25t moving in the same direction at 5km/h.

You can increase the capacitance of a capacitor by

What is Hook's law in elasticity

More damage is done and more life is endangered in a head-on collision of two cars, each traveling at 30 mph, than in a car crashing into a brick wall at 30 mph because:

The metric system is now known as the international system of units. a. T b. F

Technician A says that torque-to-yield head bolts are special bolts that are reusable. Technician A says that main bearing clearance can be calculated by knowing the inner diameter of the main bearing and the outer diameter of the main journal.