Answer:
B. X is the answer, hope it helps
Explanation:
Answer:
The pressure on a structure or substance due to wind velocity is known as Wind Pressure.
hope it helps!
Answer:
The resistance is 8.7 ohm.
Explanation:
Voltage, V = 110 V
mass, m = 1 kg
change in temperature, T = 100 - 20 = 80 C
time, t = 4 min = 4 x 60 = 240 s
specific heat, c = 4184 J/kg C
let the resistance is R.
The heat generated by the heater is used to the heat the water.
![\frac{V^2}{R} t = m c T \\\\\frac{110^2}{R}\times 240 = 1\times 4184\times 80\\\\R = 8.7 ohm](https://tex.z-dn.net/?f=%5Cfrac%7BV%5E2%7D%7BR%7D%20t%20%3D%20m%20c%20T%20%5C%5C%5C%5C%5Cfrac%7B110%5E2%7D%7BR%7D%5Ctimes%20240%20%3D%201%5Ctimes%204184%5Ctimes%2080%5C%5C%5C%5CR%20%3D%208.7%20ohm)
Answer:
0.74 m/s
Explanation:
given,
time taken by the ramp to cover cliff , t = 64 s
acceleration = 0.37 m/s²
distance traveled by the belt
![x = v_{belt}t_{belt}](https://tex.z-dn.net/?f=x%20%3D%20v_%7Bbelt%7Dt_%7Bbelt%7D)
Clifford is moving with constant acceleration
...(1)
initial velocity is equal to zero
........(2)
equating equation (1) and (2)
![v_{belt}t_{belt}=\dfrac{1}{2}at^2](https://tex.z-dn.net/?f=v_%7Bbelt%7Dt_%7Bbelt%7D%3D%5Cdfrac%7B1%7D%7B2%7Dat%5E2)
![v_{belt}t_{belt}=\dfrac{1}{2}a(\dfrac{1}{4}\times t_{belt})^2](https://tex.z-dn.net/?f=v_%7Bbelt%7Dt_%7Bbelt%7D%3D%5Cdfrac%7B1%7D%7B2%7Da%28%5Cdfrac%7B1%7D%7B4%7D%5Ctimes%20t_%7Bbelt%7D%29%5E2)
![v_{belt}=\dfrac{1}{32}a t_{belt}](https://tex.z-dn.net/?f=v_%7Bbelt%7D%3D%5Cdfrac%7B1%7D%7B32%7Da%20t_%7Bbelt%7D)
![v_{belt}=\dfrac{1}{32}\times 0.37 \times 64](https://tex.z-dn.net/?f=v_%7Bbelt%7D%3D%5Cdfrac%7B1%7D%7B32%7D%5Ctimes%200.37%20%5Ctimes%2064)
![v_{belt}= 0.74\ m/s](https://tex.z-dn.net/?f=v_%7Bbelt%7D%3D%200.74%5C%20m%2Fs)
Speed of the belt is equal to 0.74 m/s