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2 years ago

Sediments are deposited in an alluvial fan because __________________________________________

1 answer:

4 0

. Because of reduced gradients of the streams at the base of the mountains, deposition of sediment occurs and alluvial fans are formed. Adapted from Strahler,1963,<em>The Earth Sciences</em><span>.</span>

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Find the magnitude of vector A = i - 2j + 3k O V14 10 O4

Angelina_Jolie [31]

Answer:

$|A|=\sqrt{1^2+(-2)^2+(3)^2}=3.74$

Explanation:

Given that,

Vector $A=i-2j+3k$ ............(1)

We need to find the magnitude of vector A. Let us suppose vector in the form of, R = xi + yj + zk. Its magnitude is given by :

$|R|=\sqrt{x^2+y^2+z^2}$

In equation (1),

x = 1

y = -2

z = 3

So, the magnitude of vector A is given by :

$|A|=\sqrt{1^2+(-2)^2+(3)^2}$

|A| = 3.74

So, the magnitude of given vector is 3.74. Hence, this is the required solution.

6 0

2 years ago

A 0.600 kg toy car is powered by one 9V battery (9.00 V) connected directly to a small DC motor. The car has an effective energy

valina [46]

Answer:

The average current I supplied to the cars motor is 0.225 Amperes.

Explanation:

The mass of the toy car is given as, m = 0.6 kg

The toy car operates at a steady speed of, v = 3.43 m/s.

It achieves the steady speed after a time, t = 5.69 seconds.

The total kinetic energy of the car is given by,

E = $\frac{1}{2} m v^2$

= 0.5 × 0.6 × $(3.43)^2$

= 3.53 Joules

Since the efficiency of the motor is 30.6% = 0.306

The electrical energy equivalent is supplied to motor = $\frac{3.53}{0.306} = 11.54 Joules$ .

The electrical energy is given by P × t = I × V × t = 11.54 Joules

P is the electric power where P = I × V where V is the voltage of the cell and is the average current, I.

Therefore we can write I × 9 × 5.69 = 11.54 Joules.

So the average current I = $\frac{11.54}{9 \times 5.69 }$ = 0.225 Amperes.

3 0

3 years ago

What happens to the frequency of a wave If the wavelength is decreased by half

podryga [215]

Answer:

Frequency doubles.

Explanation:

Frequency doubles because Wavelength and Frequency are inversely proportional. That means if one decreases the other one increases. So, if wavelength is half, frequency is the opposite, doubles.

8 0

2 years ago

Which state helps produce light in fluorescent light bulbs?

spin [16.1K]

The answer is D plasma

5 0

3 years ago

(a) Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 108 m. Find

Goshia [24]

Answer:

It took 1.28 seconds to his voice to reach the Earth via radio waves.

Explanation:

The electromagnetic spectrum is the distribution of radiation due to the different frequencies at which it radiates and its different intensities, that radiation is formed by electromagnetic waves, which are transverse waves formed by an electric field and a magnetic field perpendicular to it.

The distribution of the radiation in the electromagnetic spectrum can also be given in wavelengths, but it is more frequent to work with it at frequencies, the highest being that of gamma rays, followed by X-rays, ultraviolet rays and the visible region , and those of lower frequencies, which correspond to infrared, microwave and radio waves.

Light propagates as electromagnetic wave in vacuum with a speed of $3x10^{8}m/s$ . Therefore, radio waves will have in vacuum the same speed.