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ExtremeBDS [4]
2 years ago
13

why can light from the sun cause skin cancer but the light from a light bulb cannot cause skin cancer?

Physics
2 answers:
nordsb [41]2 years ago
8 0
Goopoood jooooobbbbbbbbb
meriva2 years ago
4 0

Answer:

Damage from UV exposure is cumulative and increases your skin cancer risk over time. While your body can repair some of the DNA damage in skin cells, it can't repair all of it. The unrepaired damage builds up over time and triggers mutations that cause skin cells to multiply rapidly. That can lead to malignant tumors.

You might be interested in
Give reason The SI system of unit is better than the MKS system​
egoroff_w [7]

Answer:

The SI was and is intended to extend and refine the definitions used by the MKS.

6 0
3 years ago
A 92.6 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 735 (
Kitty [74]

Answer:

349 m

Explanation:

Parameters given:

Mass of climber, m = 92.6 kg

Amount of food calories = 735

1 food calorie = 103 calories

735 food calories = 75705 calories

1 joule is equal to 0.239 calories. Therefore, 75705 calories will be 316749.72 joules.

Hence, this is the amount of work the climber must do work off the food he ate.

Work done is given as:

W = Force * distance

W = m * g * h

h = W/(m * g)

h = 316749.72/(92.6 * 9.8)

h = 349 m

4 0
3 years ago
Find the required angular speed, ω, of an ultracentrifuge for the radial acceleration of a point 1.80 cm from the axis to equal
Arturiano [62]

Answer:

The required angular speed ω of an ultra-centrifuge is:

ω = 18074 rad/sec

Explanation:

Given that:

Radius = r = 1.8 cm

Acceleration due to g = a = 6.0 x 10⁵ g

Sol:

We know that

Angular Acceleration = Angular Radius x Speed²

a = r x ω ²

Putting the values

6 x 10⁵ g = 1.8 cm x ω ²

Converting 1.8 cm to 0.018 m, also g = 9.8 ms⁻²

6 x 10⁵ x 9.8 = 0.018 x ω ²

ω ² = (6 x 10⁵ x 9.8) / 0.018

ω ² =  5880000 / 0.018

ω ² =  326666667

ω = 18074 rad/sec

7 0
3 years ago
Consider a cylindrical crew module with a diameter of 5 meters, a length of 15 meters, and a crew of 6 people. The module contai
UNO [17]

Answer:

  294.524 m^3

Explanation:

The volume of a cylinder is given by the formula ...

  V = πr^2h

For a radius of 2.5 m and a length of 15 m, the volume is ...

  V = π(2.5 m)^2(15 m) = 93.75π m^3 ≈ 294.524 m^3

The volume is about 294.52 cubic meters.

7 0
3 years ago
Select the correct answer.
tester [92]

Answer:

30%

Explanation:

Total profit=$25000

Initial investment=$10000

Return on investment is given by

RoI=(Gain from investment-cost of investment)/cost of investment

RoI=\frac {25000-10000}{10000}\times 100=150%

RoI=150% but since it's over 5 years, we distribute for 5 years hence annual RoI=\frac {150}{5}=30%

Therefore, RoI=30%

8 0
3 years ago
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