What do you think are the reasons that European buildings are in general more energy-efficient than American buildings?

What will be an ideal response?


Energy costs are higher in Europe and have been high historically. This has
influenced people to pay more attention.

Physics & Space Science

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A mass is oscillating on a spring with an amplitude of 8.3 cm and a period of 4.6 s. Write an expression for its position, x, as a function of time, if x is equal to 8.3 cm at t = 0 s

What will be an ideal response?

Physics & Space Science

The diagrams below show two uniformly charged spheres. The charge on the right sphere is 3 times as large as the charge on the left sphere. Each arrow represents the electric field at the center of one sphere created by the other. Which choice best represents the magnitudes and directions of the electric field vectors created by one sphere at the location of the other sphere?

Physics & Space Science

Suppose your normal resting heart rate is 60 beats per minute. Now, suppose you board a spaceship that travels away from Earth at 90% of the speed of light. While on the ship, you measure your heart rate. What will it be?

A) It will still be 60 beats per minute. B) It will be 46 beats per minute. C) It will be 74 beats per minute. D) It will be 12 beats per minute.

Physics & Space Science

If you draw a spacetime diagram, the worldline of an object that is stationary in your reference frame is

A) vertical. B) horizontal. C) slanted. D) curved. E) a circle.

Physics & Space Science