Answer:
1:by standing with one feet
2:by standing with your toes
Explanation:
1: by standing with one feet
2:by standing with ur toes
Pressure is inversely proportional to area, the little the area, the more the pressure.the bigger the area,the lesser the pressure
Answer:
true , true, and I'm not sure about the last one!
Explanation:
The speed of the wave is given by Distance divided by time.
Speed = 10.9/5.1
= 2.14 m/s
But; speed is also given by frequency multiplied by wavelength
Wavelength is 4 m( distance between two successive crests)
thus; 2.14 = 4 × f
f = 2.14/4
= 0.535 Hz
Answer:
The ball will NOT reach the catcher before bouncing
Explanation:
y = (vertical vi)t + (1/2)gt²
2 = 0 + (1/2)(9.8)t²
t = 0.64 s
x = (horizontal vi)t + (1/2)at²
x = (25)(0.64) + 0
x = 16 m
16 m < 20 m
The ball will bounce at 16 m
Answer:
The distance s of how far the ball will go at the highest setting = 2.25m
Explanation:
Let consider x to be the representative of the compression and the distance to be s
Recall that:

By cross multiplying




Thus, for the first setting
x = 1 , s = 0.25
for the second setting
x = 2, s = 1
1 = 0.25A + B --- (1)
4 = A + B ----- (2)
From (1); let B = 1 - 0.25A and substitute it into (2)
4 = A + 1 - 0.25 A
4 - 1 = A - 0.25 A
3 = 0.75 A
A = 3/0.75
A = 4
From (2)
4 = A + B
4 = 4 + B
B = 4 - 4
B = 0
Therefore, for the highest setting, where x = 3
Then :
will be:
3² = 4s + 0
9 = 4s
s = 9/4
s = 2.25 m
∴
The distance s of how far the ball will go at the highest setting = 2.25m