0.4 N-s is the "impulse" acted on the "beach ball".
Option: C
Explanation:
Given that,
Mass of the "beach ball" is 0.1 kg.
The speed of the ball hits is 4 m/s.
We know that,
Whenever an object is collide with other object then an impulse is acted on object, this "impulse" causes "change in momentum".
Impulse acted on the beach ball is "mass" times "velocity".
Impulse = mass × velocity
Impulse = 0.1 × 4
Impulse = 0.4 kg m/s
Impulse = 0.4 N-s
Therefore, the "impulse" acted on the ball is 0.4 N-s.
Answer: B. Community agencies
Explanation:
Family requires the services of community agencies for meeting their family and child needs. The community agencies provide with food items, dairy items, medicines, stationary stuff, clothes required as daily needs.
If the gravity decreases on the earth, we will be weightless and pressure will be less exerting on us and we will be able fly
Answer:
Option D.) 5.0 x 10^-4m
Explanation:
Data obtained from the question include:
f (frequency) = 6 x 10^11 Hz
v (velocity) = 3.00 x 10^8 m/s
λ (wavelength) =?
Using the equation v = λf, the wavelength can be obtained as illustrated below:
v = λf
λ = v/f
λ = 3.00 x 10^8/6 x 10^11
λ = 5 x 10^-4m
Therefore, the wavelength of the beam of the electromagnetic radiation is 5 x 10^-4m
