Hello there..
<span>Which of the following statements is TRUE?
</span>D. Light waves are electromagnetic waves and sound waves are mechanical waves.
If it is s-t graph , point is c
if it is v-t graph , point is e
-- The output work (energy) is (200 N) x (5 m) = 1,000 Joules
-- The input work (energy) is (50 N) x (25 m) = 1,250 Joules
-- Efficiency = (useful energy output) / (energy input)
Efficiency = (1,000 J) / (1,250 J)
<em>Efficiency = 0.8</em> or 80% (D) .
Answer: Answer: The volume of the cube is 10^-3 m^3
:
Answer:
k = 5.05 N/m
Explanation:
In order to calculate the spring mass of the system, you use the following formula:
(1)
T: period of oscillation of the system
m: mass of the air-track glider = 200g = 0.200 kg
k: spring constant = ?
You first calculate the period of oscillation:

Next, you solve the equation (1) for k, and then you replace the values of the other parmateres:

The spring constant of the spring is 5.05 N/m