If you are standing at earth’s north pole, which of the following will be directly overhead?

a. the celestial equator
b. the ecliptic
c. the zodiac
d. the north celestial pole
e. the sun

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Is the vertical component of velocity ever zero?

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference