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3 years ago

What happens when you go up in the atmosphere

Physics

1 answer:

RUDIKE [14]3 years ago

5 0

Rise in altitude is directly proportional to decrease in pressure

The earth's atmosphere has its own pressure known as atmospheric pressure.The pressure level is highest right at the surface of the earth because the air at this level is supporting the weight of all the air above it. More weight above means a greater downward gravitational force. As we move up through levels of the atmosphere, the air has less air mass above it and gravity isn’t strong enough to pull down a greater number of particles. So the balancing pressure decreases. This is why atmospheric pressure drops as we rise in altitude.

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A series RL circuit with L = 3.00 H and a series RC circuit with C = 3.00 F have equal time constants. If the two circuits conta

Tems11 [23]

Answer:

(a) R = 1Ω

(b) τ = 3

Explanation:

The time constants of the given circuits are as follows

$\tau_{RL} = \frac{L}{R}\\\tau_{RC} = RC$

If the two circuits have equal time constants, then

$\frac{L}{R} = RC\\R^2 = \frac{L}{C} = \frac{3}{3} = 1\\R = 1\Omega$

Therefore, the time constant in any of the circuits is

$\tau = RC = 3$

6 0

3 years ago

Which of the following objects is NOT accelerating?

MatroZZZ [7]

Answer:

A Bicycle

Explanation:

A Space shuttle accelerating because the Earth pulls on it through the gravitational force.

A Truck is accelerating because acceleration is necessary for an object to change direction.

A car is accelerating because it is speeding up unexpectedly?????

4 0

3 years ago

Which of the following has high specific heat capacity?

Molodets [167]

Option D - Water (why does it needs to be 20 words long)

4 0

3 years ago

Identify two ways in which friction is not useful in science

kiruha [24]

Answer:

Friction between brakes and the wheels of a car or bicycle helps the vehicles slow down.
If you do not lubricate your bike regularly with oil, the friction in the chain and axles increases.

8 0

3 years ago

Given that o.2i+bj+o.4k is a unit vector,what is the value of b?

pishuonlain [190]

Answer:

b = 0.89

Explanation:

The given vector is, $A=0.2i+bj+0.4k$

A is a unit vector

We need to find the value of b.

For a unit vector, |A| = 1

So,

$0.2^2+b^2+0.4^2=1\\\\0.04+b^2+0.16=1\\\\0.2+b^2=1\\\\b^2=1-0.2\\\\b=0.89$

So, th value of b is 0.89.

6 0

3 years ago