Answer:
false
Explanation:
sound travels slower than light. that is why we see lightning before we hear the thunder
Answer:
Weight
Explanation:
The spring balance is used to measure weight of an object.
38*10=380 N
To be more exact, 38 should be multiplied by 9.8 instead of 10.
Answer:
95 %
99.7 %
Explanation:
= 166 cm = Mean
= 5 cm = Standard deviation
a) 156 cm and 176 cm


From the empirical rule 95% of all values are within 2 standard deviation of the mean, so about 95% of men are between 156 cm and 176 cm.
b) 151 cm and 181 cm


The empirical rule tells us that about 99.7% of all values are within 3 standard deviations of the mean, so about 99.7% of men are between 151 cm and 181 cm.