Answer:
Value of magnitude of acceleration will be
Explanation:
It is given that when a stone is dropped it takes 2.2 sec to reach the ground
(a) As the stone is dropped from the top of building
So its initial velocity will be 0 m /sec
(b) As the stone is free falling and there is no external force applied on it so its acceleration will be equal to acceleration due to gravity
So value of magnitude of acceleration will be equal to
Answer:
The correct option is;
B. Subtract vectors A from C; = 12 N
Explanation:
The given parameters are;
The weight of the dresser = 250 N
The force applied by the man = 20 N = C
The frictional force provided by the carpet = 8 N = The component of the weight resisting motion = A
Therefore, the net force tending to put the dresser in motion, , is given as follows;
= The force applied by the man, C - The frictional force provided by the carpet which is the component of the weight resisting motion, A
= C - A = 20 N - 8 N = 12 N
= 12 N
The resulting net force, = 12 N.
Answer:
The angle of the corresponding refracted ray is 34.84°
Explanation:
Given that,
Refractive index of water n= 1.33
Refractive index of glass n= 1.52
Incident angle = 30.0°
We need to calculate the refracted angle
Using formula of Snell's law
Put the value into the formula
Hence, The angle of the corresponding refracted ray is 34.84°