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Questions in physics

[Terjawab] Steve went to New Zealand with his parents for a summer vacation. Electrical outlets in New Zealand are 220 volts instead of the 110 volts that Steve is used to. What would Steve need to do before he could use the alarm clock he uses at home?

[Terjawab] For a rope obeying Hooke's law, show that the elastic potential energy stored in the rope is given by \[ E = \frac{1}{2} k x^2 \] where \( k \) is the elastic spring constant and \( x \) is the extension.

[Terjawab] Identify the process by which rocks change over millions of years.

[Terjawab] What is the weight of a 980 kg object on Earth?

[Terjawab] A 0.63 kg mass rests on top of a vertical spring with a spring constant of 65 N/m. Determine the distance that the spring is compressed from its equilibrium position when the mass is at rest.

[Terjawab] Usually, the hull of a ship contains a large volume of air. Why?

[Terjawab] In one hand, you hold a 0.12-kg apple, and in the other hand, a 0.20-kg orange. The apple and orange are separated by 0.75 m. What is the magnitude of the force of gravity that (a) the orange exerts on the apple? (b) the apple exerts on the orange?

[Terjawab] In 25 years, how much movement will result from a fault that slowly slips 1.5 centimeters per year?

[Terjawab] What two plates form the boundary on the western coast of Canada?

[Terjawab] Is it possible for a distance-versus-time graph to be a vertical line? Explain.