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svetoff [14.1K]
3 years ago
12

When ultra violets lights shine on glass what does it do to electrons in the glass structure?

Physics
1 answer:
andreev551 [17]3 years ago
7 0

Answer:

No

Explanation:

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What absorbs nutrients that your body needs for food and takes it in the bloodstream
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It's include in the topic of digestive system when when food is travel's from mouth to small intestine there's S intestine get nutrition from the food and sent it to bllod from small vessel's present in it.
3 0
3 years ago
A mass of 3.0 kg rests on a smooth surface inclined 34° above the horizontal. It is kept from sliding down the plane by a spring
azamat

Answer:

The spring stretched by x = 13.7 cm

Explanation:

Given data

Mass = 3 kg

k = 120 \frac{N}{m}

Angle \theta = 34°

From the free body diagram

Force acting on the box = mg sin\theta

⇒ F = 3 × 9.81 × \sin34

⇒ F = 16.45 N ------- (1)

Since box is attached with the spring so a spring force also acts on the box.

F_{sp} = k x

F_{sp} = 120 x -------- (2)

The net force acting on the body is given by

F_{net} = ma

Since acceleration of the box is zero so

F_{net} = 0

F - F_{sp} = 0

F = F_{sp}

Put the values from equation (1) & (2) we get

16.45 = 120x

x = 0.137 m

x = 13.7 cm

Therefore the spring stretched by x = 13.7 cm

3 0
3 years ago
The nardo ring is a circular test track for cars. it has a circumference of 12.5 km. cars travel around the track at a constant
Ivanshal [37]
In physical science, there are two types of quantities. The scalar quantity and the vector quantity. The scalar quantity has only the magnitude while the vector quantity has both the magnitude and direction. Displacement is the distance from the starting point to the end point of an object.

The distance traveled by an object can be calculated by the equation,
               D = s x t
where D is the distance, s is the speed, and t is time. 
Note to convert the given dimensions properly to be able to cancel units from numerator and denominator of the fraction.
             D = (100 km/h)(7.5 min)(1 h/60 min) = 12.5 km

This means that the object was just back to the original point. Hence, the displacement is equal to ZERO.
7 0
3 years ago
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How does the elbow medical and lateral epicondylitis?
dlinn [17]
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Medial epicondylitis, or “golfer’s elbow,” is an inflammation of the tendons that attach your forearm muscles to the inside of the bone at your elbow. </span>It's identified by pain from the elbow to the wrist on the inside (medial<span> side) of the elbow. The pain is caused by damage to the tendons that bend the wrist toward the palm.</span>
4 0
4 years ago
How much heat transfer is required to raise the temperature of a 0.750-kg aluminum pot containing 2.50 kg of water from 30.0ºC t
lorasvet [3.4K]

Answer:

Part a)

Q = 2.47 \times 10^6

Part b)

t = 4950.3 s

Explanation:

As we know that heat required to raise the temperature of container and water in it is given as

Q = m_1s_2\Delta T_1 + m_2s_2\Delta T_2

here we know that

m_1 = 0.750

s_1 = 900

m_2 = 2.50 kg

s_2 = 4186

\Delta T_1 = \Delta T_2 = 100 - 30 = 70^oC

now we have

Q_1 = 0.750(900)(70) + (2.5)(4186)(70) = 779800 J

now heat require to boil the water

Q = mL

here

m = 0.750 kg

L = 2.25 \times 10^6 J/kg

now we have

Q_2 = 0.750(2.25 \times 10^6) = 1.7 \times 10^6 J

Now total heat required is given as

Q = Q_1 + Q_2

Q = 779800 + 1.7 \times 10^6 = 2.47 \times 10^6 J

Part b)

Time taken to heat the water is given as

t = \frac{Q}{P}

here we know that

power = 500 W

now we have

t = \frac{2.47 \times 10^6}{500} = 4950.3 s

8 0
3 years ago
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