Perform the following calculations and express your answer using the correct number of significant digits. (a) A man has two bags weighing 13.5 lb and one bag with a weight of 10.2 lb. What is the total weight of the bags? (b) The force F on an object is equal to its mass m multiplied by its acceleration a . If a wagon with mass 55 kg accelerates at a rate of 0.0 255 m/s 2 , what is the force on the wagon? (The unit of force is called the newton and it is expressed with the symbol N.)
Perform the following calculations and express your answer using the correct number of significant digits. (a) A man has two bags weighing 13.5 lb and one bag with a weight of 10.2 lb. What is the total weight of the bags? (b) The force F on an object is equal to its mass m multiplied by its acceleration a . If a wagon with mass 55 kg accelerates at a rate of 0.0 255 m/s 2 , what is the force on the wagon? (The unit of force is called the newton and it is expressed with the symbol N.)
Perform the following calculations and express your answer using the correct number of significant digits. (a) A man has two bags weighing 13.5 lb and one bag with a weight of 10.2 lb. What is the total weight of the bags? (b) The force
F
on an object is equal to its mass
m
multiplied by its acceleration
a
. If a wagon with mass 55 kg accelerates at a rate of
0.0
255 m/s
2
, what is the force on the wagon? (The unit of force is called the newton and it is expressed with the symbol N.)
Express the answer in standard scientific notation with the appropriate number of significant figures.
The mass of a blue whale, 340000 kg.
_____ x 10 ^____kg
Perform the following calculations and express your answer using the correct number of significant digits.
(a) A woman has two bags weighing 13.5 pounds and one bag with a weight of 10.2 pounds. What is the total weight of the bags
(b) The force F on an object is equal to its mass m multiplied by its acceleration a . If a wagon with mass 55 kg accelerates at a rate of 0.0255 m/s2 , what is the force on the wagon? (The unit of force is called the newton, and it is expressedwith the symbol N.)
Express the answer in standard scientific notation with the appropriate number of significant figures.
a. The mass of a blue whale, 180000 kg. ____ x10 ^___kg
b.
The diameter of a helium nucleus, 0.000 000 000 000 003 8 m. ____ x10 ^___m
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