At maximum height, the velocity of the ball is 0.
v = u + at
0 = 34 - 32.2t
t = 1.06 seconds
In H(t), s = 0 because the ball is initially on the ground.
H(t) = -16(1.06)² + 34(1.06)
H(t) = 18.1 feet
Field strength =force/unit mass
= 14.8N/ 4kg = 3.7N/kg
Oil is a lubricant which helps increase friction. when u spread sand on a place where oil is spilled the sand reduces friction between road and vehicle tire. the vehicle wont skid.
Answer:
Explanation:
Radius of the charged sphere (R)=12cm
Charge (q)=6∗10^−6C
Electric field intensity (E)=?
i) On the surface

ii) Inside the sphere,
E=0; Because charge enclosed by Gaussian surface is zero.
iii) Outside the sphere at distance 15cm
i.e. r=12+15=27cm=0.27m

The last equation gives you the tension in the string on the right:
