What is the fraction of a hectogram in a centigram?
Responda
10^4
10^(-4)
10^(-2)
10^2
Questão 18
Questão
What is the fraction of a cubic kilometer in a cubic millimeter?
Responda
10^(-12)
10^(-6)
10^(-9)
10^(-18)
Questão 19
Questão
27500 people live in the Duchy of Grand Fenwick, which has a land area of a square 5.8 km on each side. How many people live there per square km?
Responda
819
817
810
820
Questão 20
Questão
One of the exoplanets in the TRAPPIST-1 System recently discovered has a radius larger than that of Earth by a factor of 1.13. How much bigger is the surface area of this planet than Earth? [SA=4(pi)(r^2)]
Responda
1.28 times surface area of Earth
1.3 times surface area of Earth
2 times surface area of Earth
1.276 times surface area of Earth
Questão 21
Questão
Toward the end of their lives, many stars become much bigger. assume that they remain spherical in shape and that their masses do not change in this process. If the radius of a star increases by a factor of 11.4, by what factor does its CIRCUMFERENCE change? [C=2(pi)r]
Responda
1.48x(10^3)
11.4
22.8
1.30x(10^2)
Questão 22
Questão
Toward the end of their lives, many stars become much bigger. Assume that they remain spherical in shape and that their masses do not change in this process. If the radius of a star increases by a factor of 11.4, by what factor does its SURFACE AREA change?
Responda
1.30x(10^2)
1.48x(10^3)
11.4
22.8
Questão 23
Questão
What is the best estimate for the reading of the temperature (in Celsius) in the photo provided?