Only neutrinos can go faster than the speed of light, as proved by Supernova 1987A
Indicate whether the statement is true or false
FALSE
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Scientific Notation: Which one of the following numbers is equivalent to the number 0.0001776?
A. 1.776 × 10-4 B. 17.76 × 10-3 C. 1776 × 10-5 D. 177.6 × 10-7
Kepler's second law, which states that as a planet moves around its orbit it sweeps out equal areas in equal times, means that
a)planets have circular orbits b)planets period does not depend on the eccentricity of its orbit c)a planet travels faster when it is nearer to the Sun and slower when it is farther from the Sun
An 8 000-kg aluminum flagpole 100-m long is heated by the sun from a temperature of 10°C to 20°C. Find the heat transferred (in J) to the aluminum if the specific heat of aluminum is 0.215 cal/g/°C
a. 7.2 × 10^5 b. 7.2 × 10^7 c. 7.2 × 10^3 d. 7.2 × 10^1 e. 7.2 × 10^2
A 0.20-kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 4.5 m/s. What is the magnitude of the tension in the string at this position?
a. 7.0 N b. 2.0 N c. 3.1 N d. 5.1 N e. 6.6 N