Why is the primary mirror in a telescope curved? to magnify the image to direct light rays to a focal point to intensify them to change the direction of the rays to bend the rays to absorb extra light

to direct light rays to a focal point to intensify them

Explanation:

see earlier

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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