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-Dominant- [34]
2 years ago
12

A person on a diet loses 1.6 kg in a week. How many micrograms/second (µg/s) are lost?

Physics
1 answer:
Ivan2 years ago
8 0
Based on the given values above, in order for us to get the answer, we need to convert the units first. So in 1 kilogram, there is 1,000,000 micrograms. In this case, 1.6 kilograms is 1,600,000 micrograms. For the week to seconds, 1 week is equivalent to 604,800 seconds. Therefore, 1,600,000 micrograms/604,800 seconds. So we are going to simplify this. So it would be 2.65<span>µg/s. Hope this answers your question.</span>
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3 0
2 years ago
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You place a box weighing 268.3 N on an inclined plane that makes a 42◦ angle with the horizontal.
vivado [14]

Answer:

Wy = - 268.3*cos(42) = - 199.38 [N]

Wx = 268.3*sin(42) = 179.52 [N]

Explanation:

To solve this problem we must make a free body diagram, in the attached image we can see a free body diagram.

Taking the inclined X & y axes with the same angle of 42°, we can see that the weight can be decomposed on both axes.

Since the angle is adjacent to the y-axis, we can use the cosine function

Wy = - 268.3*cos(42) = - 199.38 [N]

Wx = 268.3*sin(42) = 179.52 [N]

5 0
2 years ago
If a wave vibrates up and down twice each second and travels a distance of 20 m each second and travels a distance of 20 m each
ivolga24 [154]

Answer:

Frequency is 0.5 Hz and the wave speed is 10 m/s.

Explanation:

As we know that frequency is defined as the how many times the no of cycles repeat in one second so if the wave is vibrating up and down  twice during 1 second then the frequency in 1 second is

f=\frac{1}{2} hz\\F=0.5hz

Therefore frequency is 0.5 Hz.

Now the distance of wawe in each second is,

d=20m

Now the wave velocity is,

v=fd

Here, f is frequency, d is the distance, v is the wave velocity.

Substitute all the variables

v=0.5\times 20\\v=10m/s

Therefore the wave speed is 10 m/s.

6 0
2 years ago
What is a car's acceleration if it increases its speed from 5 m/s to 20 m/s in 3 s?
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8 0
3 years ago
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Answer:

b

Explanation:

6 0
2 years ago
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