Topic
Q:
1. "kepler y sus trabajos". Responde a las preguntas siguientes:
a) (1,0) Nombra y explica las leyes de Kepler.
b) \( (1,5) \) Un satélite artificial dista del centro de la Tierra \( 6,8 \cdot 10^{3} \mathrm{~km} \) en el perigeo y \( 7,2 \cdot 10^{3} \mathrm{~km} \) en el apogeo. Si
la velocidad máxima del satélite es \( 3,5 \cdot 10^{3} \mathrm{~m} / \mathrm{s} \), calcula su velocidad areolar y \( \vec{L} \) para giro antihorario.
Q:
\begin{tabular}{|} Question: Waves from a radio station have a frequency of \( 9.00 \times 10^{7} \mathbf{~ H z .} \) \\ How much energy (in Joules) is emitted by the radio waves? \end{tabular}
Q:
What is the frequency of a blue
light with a wavelength of
\( 4.60 \times 10^{-7} \mathrm{~m} \) ?
\( c=3.0 \times 10^{8} \mathrm{~m} / \mathrm{s} \)
\( [?] \times 10^{[2]} \mathrm{Hz} \)
Q:
A blue light has a 460 nm
wavelength. What is the
wavelength of the light in meters?
\( \left[\right. \) [?] \( \times 10^{[?]} \mathrm{m} \)
Q:
What is the wavelength of a
microwave with a frequency of
\[ \begin{array}{l}2.45 \times 10^{9} \mathrm{~Hz} \text { ? } \\ c=3.0 \times 10^{8} \mathrm{~m} / \mathrm{s}\end{array} \]
Q:
What is the frequency of
a red light with a wavelength
of \( 6.50 \times 10^{-7} \mathrm{~m} \) ?
\( [?] \times 10^{[?]} \mathrm{Hz} \)
\( c=3.0 \times 10^{8} \mathrm{~m} / \mathrm{s} \)
Q:
What is the frequency of
a red light with a wavelength
of \( 6.50 \times 10^{-7} \mathrm{~m} \) ?
\( [?] \times 10^{[6]} \mathrm{Hz} \)
\( c=3.0 \times 10^{8} \mathrm{~m} / \mathrm{s} \)
Q:
Which choice solves the equation
\( c=\lambda \cdot f \)
for frequency at the speed of light?
\( c= \) speed of light \( \quad \begin{array}{l}\lambda=\text { wavelength } \\ f=\text { frequency }\end{array} \)
\( f=\frac{\lambda}{c} \quad f=\frac{c}{\lambda} \)
Q:
(b) A different ray of light has an angle of incidence (i) of 48
The speed of light in air (c) is \( 3.0 \times 10^{8} \mathrm{~ms}^{-1} \).
The speed of light in glass \( (v) \) is \( 2.0 \times 10^{8} \mathrm{~ms}^{-1} \).
Calculate the angle of refraction \( (r) \) for this ray of light.
Q:
62 Date le grandezze \( A=(85,0 \pm 0,1) \mathrm{cm}, B=(42,6 \pm 0,1) \mathrm{cm} \) e
\( C=(22,0 \pm 0,1) \mathrm{m} \), calcola il volume \( V=A \cdot B \cdot C \), determi-
nane l'errore relativo e l'incertezza, arrotonda i risultati e
scrivi la misura.
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