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Lerok [7]
4 years ago
6

A blank is an oject that emits light

Physics
1 answer:
Daniel [21]4 years ago
5 0
Candles, light bulbs (in torches, around the house), televisions, fireworks. Remember: All objects that give out their own light are called luminous So the sun is luminous, it is a natural light source. stars and meteors also emit light.
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A rectangular block measures 8cm by 5cm by 4cm, a mass of 1.25kg what is the volume of the block
Burka [1]
To calculate the volume of a rectangular, we have to multiply the value of height, length and width.

8x5x4 = 160 cm ^3
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2 years ago
PLEASE HELP!!!!
VashaNatasha [74]
In my opinion I would say all of the above; because people's job depends on where they live or how their environment is. The way they travel is also affected because we can't travel by car through water and can't use a boat in land. Free time as well because people like to travel and or just stay at home depending on the weather which is part of earths features.
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3 years ago
You are making a telephone out of two aluminum cans and some string. You can choose between two types of string: a 2-m length of
Nataliya [291]

Answer:

C)You should use the thin cooking twine.

Explanation:

A)You can choose either because they are the same length and will produce the same wave speed.

B)You should use the heavy rope.

C)You should use the thin cooking twine.

The speed of wave in a string is given by the following formula:

|v| = \sqrt{\frac{F_T}{u} }

Where |v| = speed of wave, F_T = tension in the string, and μ = mass per length of the string.

<em>Even though the two strings have the same length, the μ (mass/length) for the heavy rope will be more than the that of a thin rope. Consequently, the </em>F_T<em>:μ for the thin rope will be higher than that of the heavy rope and as such, gives a bigger |</em>v<em>|. </em>

Therefore, the thin rope should be used in order to get a faster wave speed in the telephone.

The correct option is C.

3 0
4 years ago
The hydrocarbon C2H4 is a member of the_series.
Darina [25.2K]

Answer:

alkene series

Explanation:

the alkene series are the hydrocarbons e.gc2h4 c3h8

8 0
4 years ago
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