A 1 kg. mass is suspended from a vertical spring. Before coming to rest, the spring is stretched 1.6333... m. The system has a resistive force which is measured at 5 N. when the velocity is 1 m/sec. In addition, there is an external force which given by 13 sin 2t N. If the mass is released from equilibrium with a downward velocity of 2 m/sec., find the position at any time t. (Use g

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)