Answer:
D. magnitude and direction
Explanation:
Answer:
Vj,g = - 224.19 i - 31.72 j
magnitude of velocity = 226.42 m/s
Explanation:
Velocity of jet with respect to air = 260 m/s in 5 degree South of west
Velocity of air with respect to ground = 35 m/s in 15 degree south of east
Write these velocities in vector form
Vj,a = 260 (- Cos 5 i - Sin 5 j) = - 259 i - 22.66 j
Va,g = 35 ( Cos 15 i - Sin 15 j) = 33.81 i - 9.06 j
Velocity of jet with respect to air = velocity of jet with respect to ground -
velocity of air with respect to ground
Vj,a = Vj,g - Va,g
Vj,g = Vj,a + Va,g
Vj,g = - 259 i - 22.66 j + 33.81 i - 9.06 j
Vj,g = - 224.19 i - 31.72 j
The magnitude of velocity of jet relative to ground or earth is
=
= 226.42 m/s
Explanation:
It is given that, a batter hits a pop-up to a fielder 93 m away, range of the projectile, R = 93 m
The ball remains in the air for 5.4 s, the time of flight is 5.4 s
Time of flight :
Maximum height of the projectile :
We need to find H.
So,
So, it will rise to a height of 35.72 m.
Answer:
You will be able to tell whether the unknown cell is from an animal or from a plant through the knowledge of difference between plants and animal cells.
Explanation:
A cell can be defined as the simplest bit of living matter which exhibits a variety of shapes and sizes and that can exist independently.
When a slide of an unknown cell is studied under a microscope, different cell structures would be observed which would be used to conclude if the cell on the slide is a plant or animal cell.
The following features are observed in a plant cell:
--> cellulose cell wall is present
--> Chloroplast is present
--> A large central vacuole is present
--> Centriole is absent
The following features are observed in animal cell:
--> Cellulose cell wall is absent
--> Chloroplast is absent
--> Small vacuoles is present
--> Centriole is present
The difference between a plant and an animal cell can be seen from the features above and a clear knowledge of this will help the student tell whether the unknown cell is from an animal or from a plant.
By helping them achieve a full outer shell