Answer:
40m/s
Explanation:
The horizontal component of velocity remains constant because there are no external forces in that direction
By applying motion equations, V= U+ at
where ,
- v - final velocity
- u - initial velocity
- a-acceleration
- t - time
v = u +at
As no force act on the ball ( we neglect air resistance here) no acceleration is seen,
So v = u = 40m/s
Answer:
The water particles move perpendicular to the source of the sound wave.
Explanation:
Water particles are transverse waves
Answer:
The force is
Explanation:
Given that,
Diameter = 7.55 mm
Intensity of light = 3.87 kW/m²
Angle = 19.9°
Intensity of absorbed light
Intensity of incoming light
Ratio of intensities
Relation between intensity and power
...(I)
The power is
....(II)
From equation (I) and (II)
Put the value into the formula
Hence, The force is
That is true, buoyancy is an upwards force measured in newton’s