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netineya [11]
4 years ago
15

High-level clouds usually occur above 20,000 ft. Which is the best description of the clouds’ appearance?

Physics
1 answer:
PSYCHO15rus [73]4 years ago
8 0
D. Thin and composed of Ice crystals
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What is a velocity of an object with a momentum of 300 kg m/s and the mass of 100 kg​
Brilliant_brown [7]

Answer:

v = 3 m/s

Explanation:

P is the momentum

m is the mass

v is the velocity

P = m•v

300 = 100•v Divide both sides per 100

300/100 = v

v = 3 m/s

5 0
3 years ago
Read 2 more answers
Just one question. please help, thank you!!!
Bas_tet [7]

Answer:

Answer 5: Tension

Answer 3: Compression

Answer 4: Example 2

Answer 2: Oceanic Crust and Continental Crust

Answer 1: Continental Crust

Explanation:

7 0
3 years ago
The sampling rate of an ADC is 8.1 kHz. What will be an appropriate cut-off frequency (break frequency) for the anti-aliasing fi
KiRa [710]

Answer:

4000 Hz

Explanation:

An anti-alias filter is usually added in front of the ADC to limit a certain range of input frequencies in order to avoid aliasing. This filter is usually a low pass filter that passes low frequencies but attenuates the high frequencies.

The Nyquist sampling criteria states that the sampling rate should be at least twice the maximum frequency component of the desired signal.

Sampling rate = 2(max input frequency)

From the relation we can find out the cut-off frequency for the anti-aliasing filter.

max input frequency = sampling rate/2

max input frequency = 8100/2 = 4050 Hz

Therefore, 4000 Hz would be an appropriate cut-off frequency for the anti-aliasing filter.

3 0
3 years ago
An iron bal of mass 20kg is rolling on a flat surface. On applying force, the velocity change from 17ms to 27m/s in 5s. Calculat
pentagon [3]

Answer:

40 N

Explanation:

We first need to calculate the acceleration of the tron ball.

Since acceleration, a = (v - u)/t where u = initial velocity of iron ball = 17m/s, v = final velocity of iron ball = 27m/s and t = time taken for the change in velocity = 5 s.

So, a = (v - u)/t

= (27 m/s - 17 m/s)/5 s

= 10 m/s ÷ 5 s

= 2 m/s²

We know force on iron ball, F = ma where m = mass of iron ball = 20 kg and a = acceleration = 2 m/s²

So, F = ma

= 20 kg × 2 m/s²

= 40 kgm/s²

= 40 N

So, the magnitude of the force on the iron ball is 40 N.

4 0
3 years ago
16. Through which of the following mediums is the velocity of a sound wave the greatest?
Anna007 [38]

A.) Steel.

steel travels 5,060 meters per second,

lead travels 1,402 meters per second,

water travels 1,439 meters per second,

and air depends on temperature.

8 0
3 years ago
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