Whenever I bring <span>copper, nitrogen, water, table salt, and iron
into my room, the only one that's liquid is water.
</span>
Answer:
a. 156.41m
b. directly over the target
Explanation:
a) At the point of release, the weight will have:
Horizontal:
velocity of 40m/s (same as the plane)
Acceleration of zero since it is not under the influence of any force.
Vertical:
initial Velocity - zero at this instant
Acceleration - Towards the ground with g (9.81m/s^2)
from newton's equation of motion, since its falling under gravity, the horizontal component wont be involved
s = ut + (1/2)at^2
u = initial velocity
a = acceleration
s = displacement
t = time taken
75 = 0 + (1/2)(9.81)t^2
t^2=15.29
t=3.91
t = 3.91s
Applying the time of flight to the horizontal components:
Distance = speed x time
= 40 x 3.91
= 156.41m
B) The pilot looks down at the weight after she drops it. Where is the plane located at the instant the weight hits the ground?
not yet over the target
past the target
directly over the target
not enough information to determine
c. directly over the target. will be the correct answer
The atomic number Z of an element is the number of protons it contains (and in an atom it is equal to the number of electrons). The mass number M is close to the mass of one mol of the substance but it is defined as the number of protons and neutrons in the nucleus of the atom; there, the main mass of the atom is contained. Hence, N=M-Z=74-36=38(since M counts both protons and neutrons while Z only protons). Thus, it has 38 neutrons.
1.
The wavelength of microwaves are longer than that of visible light . Please see the attached image to understand how visible light and microwaves differ in terms of wavelength. You will find that Visible light wavelength is in the range of 400-700 nanometers, or around
m, while microwave's wavelength is around
m.
2. As seen in the above explanation,visible light has a wavelength of around
m while microwaves have a wavelength of around
m. That means microwaves are
times the wavelength of visible light. That means
they differ in wavelength by 3-4 orders of magnitude