A 2-kilogram block is attached horizontally to a spring on a frictionless surface, as shown above. The spring has a spring constant of 200 newtons per meter and negligible mass. The string is compressed 15 cm to the left. (A) Determine the speed of the block at the instant it goes through its equilibrium position.
(B)Determine the period of the block.
(C)Determine the frequency of the block.
(D) Where is the kinetic energy of the block at a maximum? Explain.

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.

Ihave this 50 question test the layer of earth's atmosphere where atoms and molecules escape into space is referred to as the a) exosphere b) ionosphere. c) mesosphere d) thermosphere