Pitch. The vibration of the frequency gets higher and makes the pitch higher
The answer is B, time is always the independent variable
Answer:
Vf = 99.7 m/s
Explanation:
In order to find the final velocity of the car, we will use the third equation of motion. The third equation of motion is given as follows:
where,
a = acceleration of the car = 9.2 m/s²
s = distance traveled by the car = 540 m
Vf = Final Speed of the car = ?
Vi = Initial Speed of the car 1.6 m/s
<u>Vf = 99.7 m/s</u>
First, we need to calculate for the height where the mailbag
was dropped.
h = 3.50 * t^3
at t = 1.75 s, h is:
h = 3.50 * (1.75)^3
h = 18.758 m
Then we can use the equation to solve for time:
h = v0t + 0.5gt^2
where v0 is initial velocity = 0, t = time, g =
acceleration due to gravity
18.758 m = 0 + 0.5 * (9.81 m/s^2) * t^2
t^2 = 3.8242
t = 1.96 s
<span>So the mailbag reaches the ground after 1.96 seconds</span>
Answer : The energy consumed by bulb in 24 hours is, 8.64 × 10⁶ J
Explanation :
As we are given that:
1 watt = 1 J/s
So,
100 watt = 100 J/s
Now we have to calculate the energy consumed by bulb in 24 hours.
As we know that:
1 hr = 60 min
1 min= 60 sec
So,
24 hr = 24 × 60 × 60 sec = 86400 sec
As, the energy consumed by bulb in 1 second = 100 J
So, the energy consumed by bulb in 86400 second = 86400 × 100 J
= 8.64 × 10⁶ J
Thus, the energy consumed by bulb in 24 hours is, 8.64 × 10⁶ J
