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- A house is advertised as having 1 420 square feet under its roof. What is area in square meters? (a) 4 660 m2(b) 132 m2 (c) 158m2 (d) 132 m2 (e) 10.2m1The nearest neutron star (a collated star made primarily of neutrons) is about 3.00 1018 m away from Earth. Given that the Milky Way galaxy (Fig. P1.81) is roughly a disk of diameter 1021 m and thickness 1019 m, estimate the number of neutron stars in the Milky Way to the nearest order of magnitude. Figure P1.815.An atom has a diameter of 3.5x10^-10m.What is the measurement in a.)cm and b.) nm 6.What is the equivalent speed of light which is 299792458.0 m/s to: a)km/h b)nm/us c)cm/ns d)um/s
- A calculator displays a result as 1.3652480 × 107 kg. The magnitudes of the quantities used to determine the result are 190, 6.28 x 10-5, 7.1 x 109, and 322.7. How many digits should be included as significant when the result is written down? zero one two three four. In an experiment to measure the gravitational acceleration g, the distance of fall y and the time taken were measured to be 60.0 + 0.3 cm and 0.351 + 0.001 s.Find the gravitational acceleration g and its percentage uncertainty Δg /g. The accepted value for g is 9.80 m/s2. Find the percentage error. ( ? = 1/2 ??^2)The speed of light is now defined to be 2.997 924 58 * 10^8 m/s.(a) Express the speed of light to three significant figures. m/s (b) Express the speed of light to five significant figures. m/s(c) Express the speed of light to seven significant figures.m/s
- 2506025 J seems like a bit of a big number how is this possible?The speed of light is now defined to be c = 2.99792458 ✕ 108 m/s . (a) Express the speed of light to three significant figures. (b) Express the speed of light to five significant figures. (c) Express the speed of light to seven significant figures.The speed of light is now defined to be c = 2.99792458 ✕ 108 m/s . Express the speed of light to three significant figures. Express the speed of light to five significant figures. Express the speed of light to seven significant figures.
- A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 108 kmkm.1 yearyear = 3.156 ×× 107 ss. a. How many meters are there in 6.50 lyly ? Express your answer using three significant figures. b. How many AUAU are there in 6.50 lyly light-year? Express your answer using three significant figures.With a caliper (Δr=0.05 mm), the edge L of a pure copper plate is measured only once. The value read by the experimenter is L=10.00 mm. It is known that the density of copper is ρ=(8.8900±0.0058)×103 kg/m3. What is the mass of the cube with its uncertainty? a) m ± um = (8.890 ± 0.078) g b) m ± um = (8.890 ± 0.078) kg c) m ± um = (8.890 ± 0.078)×10-3 g d) m ± um = (8.90 ± 0.078) g e) m ± um = (8.90 ± 0.08) gTwo students are arguing, one insists their results are more accurate. Have a look and give your opinion regarding accuracy and precision based on the results you see: Results for student A (insisting they are correct): 57.7; 57.8; 57.9; 57.8 Results for student B: 57.79; 57.81; 57.71; 57.89