4. Write in scientific notation. (a) Speed of light in a vacuum = 298 000 000km/s (b) One light year = 10 000 000 000 000km Learning Activity 3: Problem Solving Directions: Identify the given quantities and solve for the unknown quantities. BOX the final answer. Do it in your notebook. 1. The temperature of a windshield on a winter morning is 10°F. If the melting point is 0°C, how many degrees must the temperature of the windshield be raised before the ice can melt?

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A:

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Q: answer they attaced question

A: Given- Radius r=0.1 m Area A= πr2=3.14×0.12=0.0314 m2 Magnetic field B= 0.6 T Angle θ=170

Q: Astronomers use a​ light-year to measure distance. A​ light-year is the distance light travels in…

A: Speed=Distance/Time V=S/t 1 year=365days=365x24x3600=31536000s