At some airports there are speed ramps to passengers get from one place to another. a speed ramp is a moving conveyor belt on which you can either stand or walk. suppose a speed ramp has a length of 125 m and is moving at a speed of 2.1 m/s relative to the ground. in addition, suppose you can cover this distance in 73 s when walking on the ground. if you walk at the same rate with respect to the speed ramp that you walk on the ground, how long does it take for you to travel the 125 m using the speed ramp?

A3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular? a 3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )