Hey may I please get some help on this assignment, I already have the answers but I want to compare them as I am not confident in it I don't need explanations, for which ever questions I get wrong I will ask for the explanations in the comments down below.

Gravitational and Electric Fields F, = mg F = force due to gravity (N) m = mass (kg) 8 = Gm G = gravitational constant = 6.67 x 10-11 N-m-/kg2 r = radius or centre-to-centre distance (m) LET =kq g = magnitude of gravitational field strength (N/kg) k = Coulomb's law constant = 8.99 x 109 N-m-/C2 q = electrostatic charge in coulombs (C) El = electric field strength (N/C) Astronomy Data Mass of Earth = 5.98 x 1024 kg Average acceleration due Radius of Earth = 6.37 x 105 m to gravity on surface of Earth = 9.81 m/s? Mass of sun = 1.99 x 1030 kg Average gravitational field I light-year = 9.47 x 1015 m strength on surface of Earth = 9.81 N/kg 1 AU (astronomical unit) = 1.50 x 10"! m Electricity Formulas P =IV, P=I-R R = resistance () V = IR P = power (W) E = PI I = current (A) V = voltage (V) For resistances connected in series E = energy (J) RT = R1 + R2 + R3 + ... R.. t = time elapsed (s) For resistances connected in parallel Ideal Transformers N = number of turns = V. Is VP p = primary s = secondary Related value: 1.00 kilowatt hour = 1.00 kW-h = 3.60 x 10 J Wave Formulas v = f2 v = speed of wave (m/s) c = fl c = speed of electromagnetic radiation in air or vacuum (3.00 x 105 m/s) f = frequency (Hz or 1/s) A = wavelength (m) Electromagnetic Spectrum Frequency (Hertz) 103 105 107 109 1011 1013 1015 1017 1019 1021 1023 102: 10-2 10-4 10-6 10-8 10-10 10-12 10- 14 Wavelength (metres) Gamma Long wave (Radio) Short wave X-ray Tele- vision Infrared, Ultraviolet Micro- wave Visible light ROYG BIV 700 nm 400 nmUse the following information to answer the next question Reference Spectra of Some Elements and a Spectrum of a Distant Star Hydrogen reference spectrum 700 nm 600 nm 500 nm 400 nm Helium reference spectrum 700 nm 600 nm 500 nm 400 nm Carbon reference spectrum 700 nm 00 nm 500 nm 400 nm Lithium reference spectrum 700 nm 600 nm 500 nm 400 nm Distant star spectrum 700 nm 600 nm 500 nm 400 nm 24. The elements present in the atmosphere of the distant star include O Hydrogen, helium and carbon O Helium and lithium O Hydrogen, helium and lithium O Helium, carbon and lithium Use the following information to answer the next question Magnetic Fields around Pairs of Bar Magnets III IV 25. The magnets that repel each other are shown in diagrams O III & IV Oil & IV OI & III OI & lI 26. Listed in order of increasing frequency, three types of electromagnetic radiation are Oradio waves, infrared radiation, and gamma rays gamma rays, radio waves, and infrared radiation Oradio waves, gamma rays, and infrared radiation infrared radiation, radio waves, and gamma raysUnits and Prefixes Prefix Symbol Factor by Which Base Unit Is Multiplied tera T 1 000 000 000 000 = 1012 giga G 1 000 000 000 = 109 mega M 1 000 000 = 106 kilo k 1 000 = 103 hecto h 100 = 102 deca da 10 = 101 Common Base Units* 1 = 100 deci d 0.1 = 10- centi C 0.01 = 10 2 milli m 0.001 = 10-3 micro 0.000 001 = 10 6 nano 0.000 000 001 = 10-9 pico P 0.000 000 000 001 = 10 12 *metre (m), gram (g), litre (L), mole (mol) Some Non-SI Units Used with SI Quantity Unit Name Symbol Definition Time minute min 1 min = 60 s hour h 1 h = 3 600 s day d 1 d = 86 400 s year (annum) a 1 a = 31 557 600 s Area hectare ha I ha = 1 hm = 10 000 m2 Volume litre L 1 L = 1 000 cm Mass metric ton or tonne t It = 1 000 kg = 1 Mg Pressure standard atmosphere atm 1 atm = 101.325 kPa\f15. If a circuit that is rated at 12.6 Whas an electrical resistance of 119 0, then the current it draws will be O 0.325 A 9.44 A O0.106 A O 3.07 A Use the following information to answer the next question Hydrogen Spectra Observed by an Astronomer Standard Hydrogen Spectrum 700 nm 600 nm 500 nm 400 nm Hydrogen Spectrum of a Celestial Body 700 nm 600 nm 500 nm 400 nm 16. Compared with the standard hydrogen spectrum shown above, the hydrogen spectrum of the celestial body is _i_, which indicates that the celestial body is moving _ii _ the astronomer. Row ii O blue-shifted away from O red-shifted away from red-shifted toward blue-shifted toward 17. If the distance between two masses is tripled, the gravitational field strength (9) between them is O reduced to one-ninth reduced to one-third nine times the original three times the original 18. Which of the following rows identifies the definition of voltage and the definition of power? O Voltage: Change in potential energy per unit charge Power: rate of energy use O Voltage: Change in potential energy per unit charge Power: Rate of electron flow O Voltage: Anything that slows electron flow Power: Rate of electron flow O Voltage: Anything that slows electron flow Power: Rate of energy use Use the following information to answer the next question A particular telescope has a curved concave mirror with a diameter of 2.4 m and is being used to look for asteroids that may be coming towards Earth. 19. The telescope described above is most likely a O reflecting telescope Oradio telescope diffracting telescope refracting telescope20. A technician on a space station wished to build a circuit using three identical resistors such that the circuit would have the least total resistance. Which of the following circuits would have the lowest resistance? O A O A 21. One characteristic of direct current is that it O can be provided by batteries flows back and forth O does not produce a magnetic field is used to step up voltage in a transformer Use the following information to answer the next question Jupiter has a mass of 1.90 x 1027kg, and two of the moons that orbit the planet are Io and Europa. Io orbits at a radius of 4.22 x 108 m from the centre of Jupiter, and Europa orbits at a radius of 6.71 x 10 m from the centre of Jupiter. Two of the Moons That Orbit Jupiter 4.22 x 10# m Jupiter 6,71 x 10% m Europa 22. Jupiter's gravitation field strength at the position of lo is O 2.24 x 10-3 N/kg 1.05 x 1011 N/kg 3.00 x 108 N/kg O7.12 x 10-1 N/kg