Answer:
1638.225ms-1
Explanation:
Mass of block= 16.1 Kg
Mass of bullet = 0.08Kg
Initial velocity of block= 0ms-1
Initial velocity of bullet= ????
Final velocity of bullet and wood= 8.1 ms-1
From Newton's third law:
Momentum before collision= momentum after collision
MAUA + MAUB= V(MA +MB)
(0.08×UA) + (16.×0)= 8.1(0.08+16.1)
0.08UA= 131.058
UA= 1638.225ms-1
Answer:
4. since they are based on natural ecosystems have often resulted in alteration and destruction of natural systems
Explanation:
this is because agriculture leads to loss of habitats, loss of nutrients from the soil, it has also lead to the use of chemicals which are harmful to the environment as pesticides, and all this destroys natural systems
Using first equation of motion;
vf = vi + at --------------------- (1)
where vf = final velocity
vi = initial velocity
a = acceleration (here it is considered to be gravitational acceleration)
t = time
As
vi = 1.8 m/s
vf = 0 m/s
a = g = -9.8 m/s^2 (negative sign is due to the upward motion of tina)
using equation (1),
0 = 1.8 + (-9.8 * t)
t = 9.8/1.8
t = 0.1836 seconds
but the tina has to travel back to the ground, hence the time taken by tina to be in the air will be
t = 2 * 0.1836
t = 0.367 seconds
Answer:
λ = 4.9 m
Explanation:
given,
length of the organ pipe,L = 2.45 m
wavelength of the standing wave = ?
fundamental harmonic is given as,
λ = 4.9 m
Hence, the wavelength of the fundamental harmonic for standing waves in this shower is given by λ = 4.9 m
A quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.
for ex: A vector quantity has magnitude and direction.
