Answer:
8400 N
Explanation:
We are given that
Mass,m=1.2 kg
Initial speed,u=-8 m/s
Final speed,v=6 m/s
Time,
We have to find the magnitude of the average force on the ball during this collision.
Change in momentum,=
Average force,
Using the formula
Hence, the magnitude of the average force on the ball during this collision=8400 N
Answer:
The correct option is E
Explanation:
From the question we are told that
The length of the wrench which is also the radius of the circle made by the wrench is
The force is
The angle is
Generally the torque generated by the bolt is mathematically represented as
=>
=>
Answer:
The same height above sea level.
Explanation:
The distinctive characteristic of a topographic map is the use of elevation contour lines to show the shape of the Earth's surface. Elevation contours are imaginary lines connecting points having the same elevation on the surface of the land above or below a reference surface, which is usually mean sea level.
Answer:
It is the best angular resolution the telescope could achieve with perfect optical quality and in the absence of atmospheric distortion.
Explanation:
When looking through a telescope or microscope due to imperfections of the lenses or misalignment, two sources may appear. The angular space between these two sources can be found by calculating the wavelength of the light observed divided by the diameter of the telescope.