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3 years ago

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Which explicit definition matches this sequence? an={10,if n=1an−1−4,if n>1 A. an = 10 + 4(n – 1) B. an = 10 – 4(n – 1) C. an

= 4 + 10(n – 1) D. an = 4 – 10(n – 1)

1 answer:

Step2247 [10]3 years ago

3 0

Answer:

Añ=10+4(n-1)

Explanation:

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What is latent heat? Group of answer choices Energy released when water evaporates. Energy hidden in water vapor in the air. Ene

Andrews [41]

Answer:

Energy absorbed or hidden when water evaporates

Explanation:

The heat that is required to make a phase change is known as latent heat.

A phase change occurs when matter changes state. For example from solid to liquid, from liquid to gas, among others.

When changing from liquid to gas (for example when water evaporates), the heat necessary for this to happen is called latent heat of vaporization. The word latent means hidden, because a change in temperature is not perceived during the phase change, even when heat is being added, thus it is said that the heat is hidden or latent.

So the answer is:

Energy absorbed or hidden when water evaporates.

*Another type of latent heat is the latent heat of fusion, which is when a solid becomes liquid.

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4 years ago

Increasing the concentration of greenhouse gases in Earth's atmosphere decreases the transparency of the atmosphere to infrared

kondaur [170]

Answer:

Decreases the transparency of the atmosphere to infrared light.

Explanation:

When a large amount of green-house gases are present in the atmosphere, the layer of these gases become opaque to infrared radiation and radiation from the sun get trapped into these gases molecules. These excited molecules radiate this energy into our own atmosphere and that why the temperature of Earth is rising due to the Green-House effect.

8 0

3 years ago

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reach

Nookie1986 [14]

Answer:489 Revolutions

Explanation:

Given

Angular deceleration $(\alpha ) =1.5rad/s^2$

Given wheel angular velocity =96 rad/s when machine is turned off

time taken by machine to reach zero angular velocity

$0=\omega _0+(\alpha)t$

0=96+(-1.5)t

t=64 sec

angular displacement is given by

$\theta =\omega_0t+\frac{1}{2}\alpha t^2$

$\theta =96(64)-\frac{1}{2}(-1.5)(64^2)=3072 degree$

For revolutions = $\frac{3072}{2\cdot \pi}=488.86 \approx 489 revolution during Slowdown$

5 0

3 years ago

A body builder loads a bar with 550 newtons (~125 pounds) of weight and pushes the bar over her head 10 times. Each time she lif

Neporo4naja [7]

Work = (force) x (distance)

(550 newtons) x (0.5 meter) = 275 joules each lift .

(275 joules/lift) x (10 lifts) = 2,750 joules of work all together.

Power = (work done) / (time to do the work)

= (2,750 joules) / (20 seconds)

= 137.5 watts . (about 0.18 horsepower)

6 0

4 years ago

The acceleration of a car is 0.33 m/s squared. if the applied force were cut in half, what would you predict the acceleration wo

NNADVOKAT [17]

0.17m/s²

Explanation:

According to newtons second law "the force on a body is depends on its mass and acceleration"

Force = mass x acceleration.

The more the mass and acceleration, the more the force a body possess.

Given that the acceleration of the body is 0.33m/s²

Force = 0.33 x mass

If the force on the body is halved, the acceleration will also be halved;

i.e:

Force = F

$\frac{F}{2}$ = 0.33 x mass

F = $\frac{1}{2}$ x 0.33 x mass

F = 0.17 x mass

Force = acceleration x mass

Acceleration is 0.17m/s²

learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

3 0

3 years ago