Astronauts need sophisticated spacesuits to protect them from the harsh conditions of space. These spacesuits are very heavy for
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Answer:
C) at right angles to the direction of the motion
Explanation:
The magnetic force exerted on a charged moving particle is given by
where
q is the charge of the particle
v is the velocity of the particle
B is the magnetic field intensity
is the angle between the direction of v and B
Moreover, the direction of the force is perpendicular to both v and B. In particular, the direction can be found by using the right hand rule:
- index finger: direction of the velocity
- middle finger: direction of the magnetic field
- thumb: direction of the force (if the charge is positive, otherwise the direction must be reversed if the charge is negative)
Answer:
The time of flight of the ball is 1.06 seconds.
Explanation:
Given
Also,
Let us say the velocity in the x-direction is and in the y-direction is
. And acceleration in the x-direction is
and in the y-direction is
.
Also, is distance covered in x and y direction respectively. And
is the time taken by the ball to hit the backboard.
We can write . Where
is velocity of ball.
Now,
Also,
.
Plugging this value in
So, the time of flight of the ball is 1.06 seconds.