Ask question

Ask question

All categories

2 years ago

8

PLZ HELP FAST!!!!!!!!!Which characteristics describe a maritime polar air mass? A.cold and humid air B.cold and dry air C.warm a

nd humid air D.warm and dry air.

1 answer:

svet-max [94.6K]2 years ago

6 0

"Maritime" air . . . . . always high relative humidity

"Polar" air . . . . . always cold

"Maritime polar" air . . . . . choice-A

You might be interested in

if you transfer equal amounts of geat to 1kg of water and 1kg of cooper, which will change tempature more

Angelina_Jolie [31]

If you transfer equal amounts of geat to 1kg of water and 1kg of cooper, the temperature of the cooper will change more . . . it'll get more degrees warmer than the water will.

That's because the specific geat of water is greater than the specific geat of cooper.

(This just means it takes more geat to warm some mass of water by some amount than it takes to warm the same mass of cooper by the same amount.)

4 0

2 years ago

What is the length of a one-dimensional box in which an electron in the n=1 state has the same energy as a photon with a wavelen

Pie

Answer:

Length will be 0.491 nm

Explanation:

We have given wavelength of the photon $\lambda =800nm=800\times 10^{-9}m$

Plank's constant $h=6.6\times 10^{-34}J-s$

We know that energy of the photon is given by

$E=\frac{hc}{\lambda }=\frac{6.6\times 10^{-34}\times 3\times 10^8}{800\times \times 10^{-9}}=2.475\times 10^{-19}J$

We know that energy of photon is also given by

$E=\frac{n^2h^2}{8mL^2}=\frac{h^2}{8mL^2}$

$2.475\times 10^{-19}=\frac{(6.6\times 10^{-34})^2}{8\times 9.1\times 10^{-31}\times L^2}$

$L=0.491\times 10^{-9}m$

3 0

2 years ago

Hypothetically, suppose our resistance in part I was 200 ohms. Quantitatively calculate the impact of a 1 Ohm ammeter resistance

Slav-nsk [51]

Answer:

Yes, the errors are likely to be relevant

Explanation:

A systematic error occurs as a result of the instrument used in carrying out and experiment. These errors are a result of small fluctuations in the measurement properties of the instrument. This happens when the instrument departs from non-ideal situations, for example as a result of physical expansion or change in temperature. For instance, let the resistance be measured to be up to 10 Ω ± 1 Ω

The error of the resistance, ε = 0.01Ω

3 0

2 years ago

The magnetic field in the region between the poles of an electromagnet is uniform at any time, (1 point) but is increasing at th

olga nikolaevna [1]

Answer:

B)

The magnitude of induced emf in the conducting loop is 0.99 mV.

Explanation:

Rate of increase in magnetic field per unit time = 0.090 T/s

Area of the conducting loop = 110 cm^2 = 0.0110 m^2

Electromagnetic induction is the production of an emf or voltage in a coil of wire due to a changing magnetic field through the coil.

Induced e.m.f is given as:

EMF = (-N*change in magnetic field/time)*Area

EMF = rate of change of magnetic field per unit time * Area

EMF = 0.090 * 0.0110

EMF = 0.00099 V

EMF = 0.99 mV

5 0

2 years ago

Describe the agronomic significance of the upper and lower plastic limits, and of the plasticity index?

GarryVolchara [31]

Answer:It shows the size of the range of the moisture contents at which the soil remains plastic. In general, the plasticity index depends only on the amount of clay present. It indicates the fineness of the soil and its capacity to change shape without altering its volume.

4 0

2 years ago