Of the waves listed, the one with the longest wavelength is a(n)a. X ray.
b. radio wave.
c. microwave.
d. visible light wave.

Answers

Answer 1

Answer:

Of the waves listed, the one with the longest wavelength is the radio wave. The answer is letter B. They are the longest wave in the electromagnetic spectrum. It can either be a long wave or a short wave.

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Which type of galaxy has arms that contain sites of active star formation and start close to a bulge in the center?A. elliptical
B. irregular
C. barred spiral
D. normal spiral

Answers

Answer:D:normal spiral

Explanation:

Answer:

Explanation:

At a certain elevation, the ________ , the air becomes saturated and water-vapor molecules ________.

Answers

At certain altitude, the temperature of air decrease, The air becomes saturated and water vapour molecules starts condensing.

As the altitude of air increase, the atmospheric pressure decrease due to which the temperature of the air decrease. The water molecules in the atmosphere start condensing, which saturate the air (that is air can no hold water molecules), due to which the water vapour molecules starts condensing and falls on the earth in the form of rain.

A person walks 25 m west and then 45 m at the angle of 60 degrees north of east what is the magnitude of the total displacement?

Answers

To solve this question, we need to use the component method and split our displacements into their x and y vectors. We will assign north and east as the positive directions.

The first movement of 25m west is already split. x = -25m, y = 0m.

The second movement of 45m [E60N] needs to be split using trig.
x = 45cos60 = 22.5m
y = 45sin60 = 39.0m

Then, we add the two x and two y displacements to get the total displacement in each direction.

x = -25m + 22.5m = -2.5m
y = 0m + 39.0m

We can use Pythagorean theorem to find the total displacement.
d² = x² + y²
d = √(-2.5² + 39²)
d = 39.08m

And then we can use tan to find the angle.
inversetan(y/x) = angle
inversetan(39/2.5) = 86.3

Therefore, the total displacement is 39.08m [W86.3N]

The air temperature is 70 degrees, and the relative humidity is 90%. Which conclusion can be made?(1 point)The air holds little water vapor and is relatively dry.

The amount of water vapor in the air is 90% of what the air can hold.

The dew point temperature is 90% of the air temperature.

The temperature must rise in order for air to become saturated with water vapor.

Answers

Answer:

The amount of water vapor in the air is 90% of what the air can hold.

Explanation:

The answer is A

Answer: The answer is B: The amount of water vapor in the air is 90% of what the air can hold

Sal connected four light bulbs in a parallel circuit. If Sal adds another light bulb, what is true about the current in each bulb?A) The current decreased when a fourth bulb was added.

B) The current in the four bulbs is much less than the current in three bulbs.

C) The current in each bulb remained the same even though another bulb was added.

D) The current in the fourth bulb is less than the current int he other three bulbs.

Answers

Since all the bulbs are connected in parallel with each other

so here voltage across each bulb will remains the same

so here we will have

$V = i R$

now all bulbs are identical and we have same voltage source across all the bulbs

so we will have current in each bulb given by same equation

$i = (V)/(R)$

now we can say that correct answer will be

C) The current in each bulb remained the same even though another bulb was added.

The answer is C) The current in each bulb remained the same even though another bulb was added.

On Planet X, an astronaut has maximum walking speed of 1.9 m/s. The astronaut's legs are each 1.3 m long. What is the constant of acceleration due to gravity on Planet X?A. 8.3 m/s2
B. 2.8 m/s2
C. 3.8 m/s2
D. 1.1 m/s2