Answer:
Surface tension is, the surface where the water meets the air, water molecules cling even more tightly to each other.
Answer: 0.169 (3 s.f.)
Explanation:
Force = 76 N
Spring constant = 450 N/m
Extension/displacement = x
Hooke's law states that: F = kx
Therefore, 76 = 450 X x
76/450 = x
0.169 (3 s.f.) = x
The recoils is caused by the gun trying to balance out the momentum of the bullet and the gas being discharged. The gas helps balance out the momentum of the bullet a little, but the recoil is still needed for the complete balance. This need for balance is proved by Newtons third law.
The formula for finding the velocity of recoil is as follows:
(Weight of Bullet * Velocity of Bullet + Weight of Gases * Velocity of Gases) / (7000 * Weight of Gun)
<span>Hope this helped!</span>
Answer: Longitudinal waves
Explanation: For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport
Answer:
for X, it's 50 times cos 35.
for y, it's 50 times sin 35.
