3 years ago

Choose the letter of the best description of the nature of light:

Physics

1 answer:

Andreas93 [3]3 years ago

6 0

C. Light sometimes behaves like waves and at other times like particles.

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Which competition is the “ most important soccer competition in the world “ ?

Ganezh [65]

It would be B. The World Cup

Hope this helps

Have a great day/night

8 0

2 years ago

An unknown material has a mass

atroni [7]

Answer: 1896.55J/kg°C

Explanation:

The quantity of Heat Energy (Q) required to heat a material depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since,

Q = 1320 joules

Mass of material = 5.61kg

C = ? (let unknown value be Z)

Φ = 0.124°C

Then, Q = MCΦ

1320J = 5.61kg x Z x 0.124°C

1320J = 0.696kg°C x Z

Z = (1320J / 0.696kg°C)

Z = 1896.55 J/kg°C

Thus, the specific heat of the material is 1896.55J/kg°C

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3 years ago

Read 2 more answers

What direction does the medium vibrate

slega [8]

a direction perpendicular to the direction of propagation of the wave, it is called a transverse wave.

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3 years ago

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A 0.2-kg steel ball is dropped straight down onto a hard, horizontal floor and bounces straight up. The ball's speed just before

nadya68 [22]

Answer:

Explanation:

Given

mass of steel ball $m=0.2\ kg$

initial speed of ball $u=10\ m/s$

Final speed of ball $v=-10\ m/s$ (in upward direction)

Impulse imparted is given by change in the momentum of object

therefore impulse J is given by

$J=\Delta P$

$\Delta P=m(v-u)$

$\Delta P=0.2(-10-10)$

$\Delta =-4\ N-s$

so magnitude of Impulse =4 N-s

7 0

2 years ago

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Mr. Mehta cut several 275-centimeter lengths of wallpaper to put in his

mihalych1998 [28]

Answer:

2.75 meters.

Explanation:

1 meter = 100 centimeters.

There are 275 centimeters.

275/100=2.75

So, each piece of wallpaper was 2.75 meters long.

6 0

3 years ago