Answer:
A_1 = 0.0135 m2
Explanation:
GIVEN DATA:
mass of SECOND truck m2 =2500 kg
mass of FIRST truck m1 = 25 lb = 11.33kg
Area A2 = 3 m2
according to the pascal's law, pressure at one point is equal to pressure exerted on the other side, therefore we have
![P_{1 }= P_{2}](https://tex.z-dn.net/?f=P_%7B1%20%7D%3D%20P_%7B2%7D)
we know that
![pressure = \frac{force}{area}](https://tex.z-dn.net/?f=pressure%20%3D%20%5Cfrac%7Bforce%7D%7Barea%7D)
![\frac{f_{1}}{A_{1}} =\frac{f_{2}}{A_{2}}](https://tex.z-dn.net/?f=%5Cfrac%7Bf_%7B1%7D%7D%7BA_%7B1%7D%7D%20%3D%5Cfrac%7Bf_%7B2%7D%7D%7BA_%7B2%7D%7D)
![A_{2} =\frac{f_{2}}{F_{1}}* A_{1}](https://tex.z-dn.net/?f=A_%7B2%7D%20%3D%5Cfrac%7Bf_%7B2%7D%7D%7BF_%7B1%7D%7D%2A%20A_%7B1%7D)
![A_{2} = \frac{m_{2}}{m_{1}}*A_{1}](https://tex.z-dn.net/?f=A_%7B2%7D%20%3D%20%5Cfrac%7Bm_%7B2%7D%7D%7Bm_%7B1%7D%7D%2AA_%7B1%7D)
![3 = \frac{2500}{11.33}*A_{1}](https://tex.z-dn.net/?f=3%20%3D%20%5Cfrac%7B2500%7D%7B11.33%7D%2AA_%7B1%7D)
A_1 = 0.0135 m2
Answer:
m g = G * m * M / R^2 force of attraction
g = G * M / R^2
g = 6.67E-11 * 5.96E24 / (6.37E6)^2
g = 6.67 * 5.96 / 6.37^2 * 10^1
g = .98 * 10 = 9.8 m/s^2
Q2.
d g = G M * (-2 R^-3 dR ) = -2 G M / R^3 (very small where dR = 1)
You can download the answer here
bit.
ly/3a8Nt8n
Answer:
Sound waves have a low speed of 330 m/s
Sound waves are mechanical waves
Electromagnetic waves have a greater speed of 3.0×10^8 m/s
Electromagnetic waves are due to disturbance of electromagnetic objects.
Answer:
Explanation:
Kinetic energy of ball in motion = 1/2 m v² . Potential energy = 0
Let the minimum distance between the balls be d on collision.
Electric potential energy at that time= k Q²/d , Here kinetic energy is converted into potential energy . So
1/2 m v² = kQ²/d
d =2 k Q² / mv²,= 18 x 10⁹ x Q²/ m v².