Answer:
Explanation:
Let F be the force applied by Ricardo
work done by him = force x displacement
= F x 54 unit
output of work
= mgh , m is mass of luggage , h is height by which luggage is lifted .
= 645 x 32 x 4.5
= 92880 ft-poundal.
According to question
output / input = .95
92880 / (F x 54) = .95
F = 1810.52 poundal.
Answer:
258 Hz or 266 Hz
Explanation:
When two sounds of similar frequency occur at the same time, a phenomenon called "beat" occurs. The beat is an interference patter between the two sounds; the frequency of this beats (called beat frequency) is given by the difference between the frequencies of the two sounds:
where
is the beat frequency
is the frequency of the 1st sound
is the frequency of the 2nd sound
In this problem,
is the beat frequency
is the frequency of the middle C tuning fork
is the frequency of the middle C piano string
Solving for f2, we find two solutions:
Answer:As an object speeds up, the total energy increases / decreases / remains the same. As an object slows down, the total energy increases / decreases / remains the same.
Explanation:
Answer:
doubled as well.
Explanation:
Using what I call "Method of Simplest Integers," insert all charges and distance as just 1 (ignore k, because it is a constant), so
Fe=k(1*1)/(1^2)=k(1)/1=k(1)
Since one of the charges is doubled,
Fe'=k(2*1)/(1^2)'k(2)/1=k(2)
Set Fe and Fe' side by side and compare their outcomes. cancel out k, because it's constant, and find out what multiple makes Fe becomes Fe'. In this case, it is 2. So the force would be doubled if one of the
Answer:
I'm pretty sure your speed relative to the ground would be 110 meters per second. However that is just a guess and I'm not 100% sure.