An iron rod with diameter
of 12cm at 20°c is to be fixed into a steel plate having a hole of diameter 10cm at same temperature. To what Temperature must the steel plate be heated in order for the for rod to Fix ? [linear expansivity of the steel is 0.00001/K]
A12-kg bag of groceries is tossed onto a table at 4.0 m/s and slides to a stop in 2.2 s . modify the equation fδt=δ (mv) to find the force of friction.
Hunter’s velocity was 4.5 m/s. at the end of his race, his velocity was the same. which best describes his movement? his movement stopped. his acceleration is zero. his time was constant. his acceleration was positive.