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Finalized solutions for the different tasks.

This commit is contained in:
dwenz 2020-08-25 15:27:22 +02:00
parent 655d60a1c6
commit f992d287f9
3 changed files with 2363 additions and 37 deletions

221
Aufgaben_zur_Vorbereitung_von_Kapitel_1.ipynb Normal file → Executable file
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@ -476,6 +476,60 @@
"```" "```"
] ]
}, },
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Lösung:\n",
"\n",
"Hier noch ein kleiner Kommentar zum auflösen der Formel. Wir wollen den Zeitpunkt t1 wissen an dem das Objekt auf dem Boden aufkommt (s(t1) = 0). Sprich wir müssen die obige Formel wie folgt umstellen:\n",
"\n",
"$$ s(t_1) = 1/2 \\cdot g \\cdot t_1^2 + s_0 $$\n",
"\n",
"auflösen nach t:\n",
"\n",
"$$ \\sqrt{2 \\cdot (s - s_0)/g} = t_1 $$\n",
"\n",
"wobei hier s(t1)=0 und s0 = 1.2 m ist. Solltet ihr einfach 1.2 m durch eine der Beschleunigungen Teilen bekommt ihr durch die Wurzel eine komplexe Zahl."
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"ExecuteTime": {
"end_time": "2020-08-25T09:07:53.967603Z",
"start_time": "2020-08-25T09:07:53.954643Z"
}
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1.2171612389003692 0.4946193668294979 0.09359019226174953\n",
"-92.31736564698974\n"
]
}
],
"source": [
"s0 = -1.2 # m\n",
"aSun = -274 # m/s**2\n",
"aEarth = -9.81 # m/s**2\n",
"aMoon = -1.62 #m/s**2\n",
"\n",
"\n",
"tSun = (2 * s0/aSun)**(1/2) # s\n",
"tEarth = (2 * s0/aEarth)**(1/2) # s\n",
"tMoon = (2 * s0/aMoon)**(1/2) # s\n",
"\n",
"# Times:\n",
"print(tMoon, tEarth, tSun)\n",
"\n",
"# Velocity:\n",
"print(aSun * tSun * 3.6) # km/h"
]
},
{ {
"cell_type": "markdown", "cell_type": "markdown",
"metadata": {}, "metadata": {},
@ -633,6 +687,42 @@
"* Das Runden der berechneten Werte der Anzahl an signifikanten Stellen entsprechend. " "* Das Runden der berechneten Werte der Anzahl an signifikanten Stellen entsprechend. "
] ]
}, },
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"ExecuteTime": {
"end_time": "2020-08-25T09:08:13.614302Z",
"start_time": "2020-08-25T09:08:13.607319Z"
}
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Fie Fallzeit beträgt auf...\n",
"... dem Mond: 1.217 s \n",
"... der Erde: 0.495 s\n",
"... der Sonne: 0.094 s\n",
"\n",
"Der Stift schlägt auf der Sonnenoberfläche\n",
"mit einer Geschwindikeit von -92.317 km/h auf.\n"
]
}
],
"source": [
"print(f'''\n",
"Fie Fallzeit beträgt auf...\n",
"... dem Mond: {tMoon:.3f} s \n",
"... der Erde: {tEarth:.3f} s\n",
"... der Sonne: {tSun:.3f} s\n",
"''')\n",
"\n",
"print(f'Der Stift schlägt auf der Sonnenoberfläche\\nmit einer Geschwindikeit von {(aSun * tSun * 3.6):.3f} km/h auf.')"
]
},
{ {
"cell_type": "markdown", "cell_type": "markdown",
"metadata": {}, "metadata": {},
@ -817,6 +907,60 @@
"<div>" "<div>"
] ]
}, },
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Lösung:"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"ExecuteTime": {
"end_time": "2020-08-25T09:09:05.968956Z",
"start_time": "2020-08-25T09:09:05.958982Z"
}
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Spannung | Strom | Leistung:\n",
"5 V: 10 mA; 50 mW\n",
"10 V: 20 mA; 200 mW\n",
"20 V: 40 mA; 800 mW\n",
"50 V: 100 mA; 5000 mW\n",
"\n",
"Der Fehler des Stroms für die 50 V Messung beträgt: 11 Ohm\n"
]
}
],
"source": [
"def strom(spannung, widerstand):\n",
" return spannung/(widerstand/1000)\n",
"\n",
"\n",
"def leistung(spannung, widerstand=500):\n",
" return spannung**2/(widerstand/1000)\n",
"\n",
"print(f'''\n",
"Spannung | Strom | Leistung:\n",
"5 V: {strom(5, 500):2.0f} mA; {leistung(5):2.0f} mW\n",
"10 V: {strom(10, 500):2.0f} mA; {leistung(10):2.0f} mW\n",
"20 V: {strom(20, 500):2.0f} mA; {leistung(20):2.0f} mW\n",
"50 V: {strom(50, 500):2.0f} mA; {leistung(50):2.0f} mW\n",
"''' )\n",
"\n",
"def delta_strom(spannung, dspannung, widerstand=500, dwiderstand=20):\n",
" return strom(spannung, widerstand) * ((dspannung/spannung)**2 + (dwiderstand/widerstand)**2)**(1/2)\n",
"\n",
"print(f'Der Fehler des Stroms für die 50 V Messung beträgt: {delta_strom(50, 50/10):2.0f} Ohm')"
]
},
{ {
"cell_type": "markdown", "cell_type": "markdown",
"metadata": {}, "metadata": {},
@ -1248,11 +1392,54 @@
] ]
}, },
{ {
"cell_type": "code", "cell_type": "markdown",
"execution_count": null,
"metadata": {}, "metadata": {},
"outputs": [], "source": [
"source": [] "### Lösung:"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {
"ExecuteTime": {
"end_time": "2020-08-25T09:09:57.232469Z",
"start_time": "2020-08-25T09:09:57.215516Z"
}
},
"outputs": [
{
"data": {
"text/plain": [
"1373.715238095238"
]
},
"execution_count": 4,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"messwert_nummer = list(range(1,7,1))\n",
"spannungs_wert = [12., 11.78, 12.56, 12.34, 12.01, 11.94]\n",
"strom_werte = [110, 98, 102, 124, 105, 95]\n",
"dspannung_wetre = [0.32, 0.15, 0.63, 0.12, 0.20, 0.17]\n",
"dstrom_werte = [10]*len(messwert_nummer)\n",
"\n",
"daten = [messwert_nummer, spannungs_wert, strom_werte, dspannung_wetre, dstrom_werte]\n",
"\n",
"\n",
"u5 = daten[1][4]\n",
"i5 = daten[2][4]\n",
"leistung(u5, i5)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Die Messwertnummer ist in der obigen Tabelle um eins im Vergleich zum Listenindex verschoben."
]
}, },
{ {
"cell_type": "markdown", "cell_type": "markdown",
@ -1277,12 +1464,34 @@
"<div>" "<div>"
] ]
}, },
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Lösungen:"
]
},
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": null, "execution_count": null,
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [] "source": [
"height = [1, 1.2 , 1.4, 1.6, 1.8, 2, 2.2, 2.4, 2.6, 2.8] # m\n",
"dheight = [0.1] * len(height) # m\n",
"t = [0.74, 0.8, 0.87, 0.94, 0.99, 1.03, 1.10, 1.15, 1.17, 1.24] # s\n",
"dt = [0.012, 0.011, 0.009, 0.008, 0.010, 0.011, 0.012, 0.013, 0.080, 0.010] # s\n",
"\n",
"def free_fall(t, a):\n",
" '''\n",
" Zurückgelegte Strecke bei einer gleichbeschleunigten Bewegung.\n",
" \n",
" Args:\n",
" t (float): Vergangene Zeit in Sekunden.\n",
" a (float): Beschleunigung der Bewegung in m/s**2\n",
" '''\n",
" return 0.5 * a * t**2 "
]
} }
], ],
"metadata": { "metadata": {
@ -1301,7 +1510,7 @@
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython3", "pygments_lexer": "ipython3",
"version": "3.7.6" "version": "3.7.3"
} }
}, },
"nbformat": 4, "nbformat": 4,

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