Answer:
See below
Explanation:
3 minutes = 180 seconds
v f = at = .5 m/s^2 * 180 s =<u> 90 m/s </u>
<u />
Distance = 1/2 a t^2 = .5 * .5 * 180^2 =<u> 8100 m </u>
Answer:
b. -11.6 cm
Explanation:
We have given parameters:
Length, l = 1.5 m = 150 cm
Mass of weight, 
= 20 kg
Width, x = 4 cm
Distance d = 4 cm
Mass of bar, 
= 5 kg
We are asked to find the center of mass from the mid-point, 
Since 3 weights are on the left and 2 weights are on the right, we know:
= 3 * 20 = 60 kg
= 2 * 20 = 40 kg
And also we know that, 
= 150/2 = 75 cm
For the left side, center of mass is:
cm
From the midpoint, the distance to the left is:
cm
For the right side, center of mass is:
cm
From the midpoint, the distance to the right will be:
cm
Hence,
cm
Answer:
No
Explanation:
To increase or decrease loudness, you have to change the amplitude
Answer:
Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Answer:
Time, t = 0.015 seconds.
Explanation:
Given the following data;
Mass, m = 0.2kg
Force, F = 200N
Initial velocity, u = 40m/s
Final velocity, v = 25m/s
To find the time;
Ft = m(v - u)
Time, t = m(v - u)/f
Substituting into the equation, we have;
Time, t = 0.2(25 - 40)/200
Time, t = 0.2(-15)/200
Time, t = 3/200
Time, t = 0.015 seconds.
Note: We ignored the negative sign because time can't be negative.
