A 45 kilogram mass is attached to a spring. If the frequency of simple harmonic motion is 2/π cycles/s, what is the spring constant k? k = N/m What is the frequency of simple harmonic motion if the original mass is replaced with an 180 kilogram mass? cycles/s

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant