Addition by 1. Components: Three vectors, , , and , have the components shown in the table. What is the magnitude of the resultant of these three vectors??x componenty component?3.50 m-4.50 m?2.00 m0.00 m

src="https://sciemce.com/media/4/ppg__cp1pbb0313192044__f15g1q37g6.jpg" style="vertical-align: -5.0px;" />?-5.50 m2.50 m

A. 5.50 m
B. 13.0 m
C. 11.1 m
D. 7.00 m
E. 2.00 m

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Answer: E

Physics & Space Science

Radioactive Decay: Polonium-215, Po, undergoes alpha decay with a half-life of 1.8 ms.(a) What percent of the original polonium-215 is left after 0.010 s?(b) How many protons and neutrons does the daughter nucleus contain?

What will be an ideal response?

A planet is detected via the Doppler technique. The shape of the periodic velocity pattern tells us

A) the planet's size. B) the planet's mass. C) the planet's density. D) the orbital period of the planet. E) the orbital eccentricity of the planet.

What are the appropriate units for the Sun's luminosity?

A) Kilograms B) Joules C) Watts D) Newtons

You are at the leading end of a canoe and your friend is at the trailing end as the canoe is drifting along at a speed of v. You toss a backpack to your friend and he catches it. What is the canoe's speed after your friend catches the backpack compared to before you threw it? Ignore any friction effects between the canoe and the water

1.It is greater than v. 2.It is less than v. 3.It now has the same speed it had before the backpack was thrown. 4.We cannot tell from the information given.