He discovered that Jupiter has moons because he was the first to point a telescope at the sky.
a) Kepler
b)techo Brahe
c) gailieo
d)ptolemy
e)Aristotle
c) gailieo
You might also like to view...
Answer the following statement(s) true (T) or false (F)
Suppose we have a box containing an electron with the lowest possible energy E1. Imagine that we slowly squeeze the box, making its length L smaller. What will happen to the electron’s energy? The system described in problem Q10T.5 will resist being compressed in the manner described by exerting an opposing force on whatever is compressing it.
A capacitor is useful in
A) boosting the energy output of a circuit. B) increasing the current in a resistor. C) smoothing pulsed current. D) changing dc to ac in a circuit. E) increasing or decreasing voltage.
The work performed as a function of time for a process is given by W = at3, where a = 2.4 J/s3. What is the instantaneous power output at t = 3.7 s?
A) 99 W B) 69 W C) 139 W D) 208 W
A 1.6-kg block slides down a plane (inclined at 25° with the horizontal) at a constant speed of 2.0 m/s. At what rate is the frictional force changing the mechanical energy of the block?
a. +28 W b. +13 W c. ?13 W d. ?28 W e. +6.5 W