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3 years ago

What element is used for lightbulb

1 answer:

5 0

Lightbulbs are filled with the element argon and the filaments are made of metallic element tungsten. The argon in the bulb protects the filament from the surrounding air, which would otherwise oxidize the filament.

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1) Radiation from the sun can be deflected or contained by

earnstyle [38]

Answer:

Explanation:

light colors deflect ligjt

7 0

3 years ago

For a car of weight 9000 N the recommended tyre pressure is 18 N/cm².Find

GarryVolchara [31]

mathematically,

$pressure = \frac{force}{area}$

but weight= Force.

given pressure

18N/cm^2

and Force = 9000N

making area the subject in the relation above.

$Area = \frac{force}{pressure}$

substitute their values into the equation

$Area = \frac{9000}{18}$

$Area = 500 {cm}^{2}$

3 0

3 years ago

PLEASE I NEED HELP I AM REALLY STUCK!!!

AlekseyPX

Answer: Force = Mass X Acceleration

F = 5 x 2

F = 10 N

8 0

3 years ago

A car with a mass of 1,000 kg moving with an initial velocity of 8 m/s is brought to rest by colliding with a truck. The collisi

ruslelena [56]

Answer:

-40,000 N

Explanation:

First, use the kinematics equation v(f) = v(i) + at. Final velocity is 0, initial is 8, and time is 0.2 seconds. Solving for a, you get -40 m/s^2. Then, use Newton’s second law, F=ma, to find the force. F = (1000)(-40) = -40,000 N.

4 0

3 years ago

A crude approximation is that the Earth travels in a circular orbit about the Sun at constant speed, at a distance of 150,000,00

Savatey [412]

Answer:

The answer is "Option B".

Explanation:

$r=15\times 10^{7}\ km\ = 15\times 10^{10}\ m\\\\w=\frac{2\pi}{1\ year}\\\\=\frac{2\pi}{1\times 365.24 \times 24 \times 60 \times 60\ sec}\\\\a=w^2r\\\\=(\frac{2\pi}{1\times 365.24 \times 24 \times 60 \times 60\ sec})^2 \times 15 \times 10^{10}\ \frac{m}{s^2}\\\\$

$=5.940 \times 10^{-3} \ \frac{m}{s^2}\\\\=6 \times 10^{-3} \ \frac{m}{s^2}\\\\=0.006\ \frac{m}{s^2}\\\\$

7 0

3 years ago