m = mass of the person bouncing = 78 kg
k = spring constant of the bathroom scale = 1.5 x 10⁶ N/m
v = maximum velocity of the person
A = maximum compression of the spring of scale = 0.115 cm = 0.00115 m
h = height gained at maximum speed = A = 0.00115 m
Using conservation of energy
spring potential energy = kinetic energy + gravitational potential energy
(0.5) k A² = (0.5) m v² + m g h
k A² = m v² + 2 m g h
(1.5 x 10⁶) (0.00115)² = (78) v² + 2 (78) (9.8) (0.00115)
v = 0.0538 m/s
Answer:
A) in between Earth and the sun.
Explanation:
During this phase, the dark portion of the moon is facing Earth, so the moon is not visible in the night sky.
Answer:
i may be wrong but the distance is 11 and the displacment is 73
Explanation:
Answer with Explanation:
When solving a problem in math, chemistry or physics, it is necessary to understand all the words and their definitions. If not, start with finding out their meanings, one by one.
Here the key word to know is pascal, (P), which is a unit of measure for pressure, defined as
pressure = Force / applied area
1 pascal = 1 newton / square metre or
1 P = 1 N/sq.m.
Here, we have been given:
Force = 150 N
Area = 0.25 m^2.
Thus the pressure
= Force / Area
= 150 N / 0.25 m^2
= 150/0.25 N/m^2
= 600 pascals.
[ note that the abbreviations are written in capitals, while the full words, units of measurement, are written without capitalization, since they are no longer proper names]