A 2.5 kg block is attached to an ideal spring and the other end of which is fixed. The block is on a level, horizontal, frictionless surface as shown in the diagram. At time T0, The block is set into simple harmonic motion with a frequency of 0.5 Hz Buy an external force pushing it to the left, giving the block initial velocity of 1.6 m/s. assume the block starts from equilibrium before being given the initial push. find the constant of the spring
find the amplitude of the blocks motion
find the velocity of the block when it is .14 meters away from equilibrium

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Carbon 14 is a naturally occurring stable