The ideal shape for the primary mirror of a telescope is concave parabolic
Indicate whether the statement is true or false
T
You might also like to view...
An object in a vacuum has no
A) buoyant force. B) mass. C) weight. D) temperature. E) all of the above
Lens-Maker Formula: The radius of curvature of the curved side of a plano-convex lens made of glass, having index of refraction 1.64, is 33 cm. What is the focal length of the lens?
A. 52 cm B. -52 cm C. 21 cm D. -21 cm
According to the Hubble law, where H = 17 km/s/106 lightyears, what is the velocity of recession of a quasar at a distance of 2 billion lightyears from Earth?
a. 0.75 c b. 0.33 c c. 0.55 c d. 0.11 c e. 0.93 c
An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?
(F) 6.30 m (G) 17.5 m (H) 27.2 m (J) 40.0 m