I think it would be near the sun due.to high rays of sun
Answer: In many situations friction needs to be increased. 1) By making the moving surfaces rough : Tyres of vehicles have designed with grooves on the surface to increase friction. A large friction provides a better grip to vehicles on the road and prevents them from skidding. hope this helps . Can u give me brainliest
Explanation:
Answer:
Net force is 86.135 N , N 82.255° W
Explanation:
Resolving all forces vertically and horizontally.
First vertically.
20N = 20sin90 = 20
30N = 30sin(90-30)= 30sin60
=25.981
25N = 25sin0 = 0
35N =- 35sin80= -34.368
Total of vertical =
20+25.981+0-34.368
= 11.613N
For horizontal
20N =- 20cos 90 = 0
30N =- 30cos 30 = -25.981
25N = -25cos0 = -25
35N = -35cos 10 = -34.468
Total horizontal = 0-25.981-25-34.368= -85.349
Resultant force = √(11.613)²+(-85.349)²
= √(134.862) +(7284.452)
= √ 7419.314
= 86.135 N
Tan(tita°) = 11.613/-85.349
Tan(tita°) =- 0.136
tita° = Tan^-1(-0.136)
tita° = -7.745
North of West = 90-7.745
= 82.255°
Answer:
the length of the pipe is 0.85 m or 85 cm
Explanation:
Given the data in the question;
The successive harmonics are; 700 Hz , 900 Hz , and 1100 H
Now, for a closed pipe,
length of pipe (L) = λ/4
Harmonics; 1x, 3x, 5x, 7x, 9x, 11x
1100Hz - 900Hz = 200Hz
⇒ 2x = 200Hz
x = 100Hz ( fundamental frequency )
λ = V/f = 340 /100 = 3.4 m
Now
Length L = λ / 4
L = 3.4 / 4
L = 0.85 m or 85 cm
Therefore, the length of the pipe is 0.85 m or 85 cm
I'm not sure, I think it's option A.
Let me know if I'm wrong!