Click the lightest tow rope which can be used to pull a 6,000 lb pallet across the warehouse floor. a.2000 b.5000 c.1500 d.15000

B. 5000

Explanation:

The tow rope should be strong enough so that it can overcome the frictional force and pull pallet without breaking. In question following data is given:

                          Weight of pallet = W = 6000lbs  

                          Coefficient of friction = uK = 0.42

The tow rope required to pull pallet = (Weight of pallet) (Coefficient of friction)

                                                               = (W)( uK)

                                                                = (6000)(0.42)

                                                                 = 2520 lbs

5000lbs is higher value than 2520lbs. Hence, if we will use 5000lbs tow rope it can easily pull the pallet.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2