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ohaa [14]
3 years ago
7

The word "nitrogen" could stand for a(n)

Physics
1 answer:
Gala2k [10]3 years ago
8 0

A. atom.

B. element.

C. molecule

Answer: D. All of these could describe nitrogen.

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3. A force of 90N pushes downward at an angle of 32° to the horizontal on an object resting on the floor. The
Nonamiya [84]

F = m × g

Now when, a force acts on the object at an angle and in downwards, thus formula becomes:

= N = mg + F sin(x)

Here,

  • N = normal force, m = mass , g = acceleration due to gravity, F = outside force, x = the angle formed

See, as we habe to calculate the weight, which is m × g, thus we will recreate thus formula like thus:

= N = w + F sin(x) --------- [Weight = w]

Now, the solutions becomes easy from here, just put the values:

= N = w + F sin(x)

= 200 = w + 90 × sin(32)

= 200 = w + 90 × 0.55

= 200 = w + 49.5

= 200 - 49.5 = w

= 150.5 = w

I have got my answer but in approx, hope you will not mind. ^^"

8 0
3 years ago
Water will expand more than ___<br><br> A. door<br> B. juice<br> C. air
Snezhnost [94]
I think the answer is B because juice has a higher density than water
7 0
3 years ago
Read 2 more answers
Bob the American has just driven his car across the Canadian border when he sees a
Ludmilka [50]

Answer:

it equals 53 miles per hour

4 0
3 years ago
A neon sign that requires a voltage of 11,000 v is plugged into a 120-v wall outlet. what turns ratio (secondary/primary) must a
Arisa [49]
The equation that relates the voltages and the number of turns in a transformer is
\frac{V_s}{V_p}= \frac{N_s}{N_p}
where V_s = 120 V is the voltage in the secondary coil, V_p=11000 V is the voltage in the primary coil, and N_s and N_p are the number of turns on the secondary and primary coils.

Using the numbers, we find the ratio between the number of turns:
\frac{N_s}{N_p}= \frac{V_s}{V_p}= \frac{120 V}{11000 V}=0.0109
8 0
3 years ago
Which of the following statements is the most accurate about the Earth’s average temperature over the last 30 years?
enyata [817]

Answer:

the 3rd one

Explanation:

climate change

5 0
3 years ago
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