Answer:
(a) 13.43 N
(b) 1.62 m/s2
Explanation:
(a)Let g = 9.81 m/s2
The pushing force can be split into 2 components: 1 parallel and the other perpendicular to the floor:
- The parallel component:
- The perpendicular component:
Friction force is the product of coefficient and normal force, which consists of gravity and the perpendicular pushing force
(b) Horizontally speaking, the net force acting on the block is the parallel force subtracted by friction
The block acceleration according to Newton's 2nd law is
Answer:
The ratio of the speed of light in a vacuum to the speed of light in the material it is passing through
Explanation:
- Index of refraction also called refractive index is the ratio of the sine of angle of incidence to the sine of angle of refraction, this is according to the Snell's Law.
- <u>The value of index of refraction</u> may be calculated from the ratio of the speed of light in vacuum to the speed of light in a second medium of a greater density.
- Therefore,<em><u> refractive index refers to the speed of light in a vacuum divided by the speed of light in the medium.</u></em>
Answer:
Stars are forming in the spiral arms so there are high mass, hot, blue stars in the arms.
Explanation:
Answer:
Explanation:
As we projected the balloon at speed vo at an angle of 29 degree
so the two component of velocity is given as
now we know that in x direction we have
in y direction we have
now we have