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3 years ago

What is refraction and reflection

Physics

1 answer:

timofeeve [1]3 years ago

3 0

Answer:

Reflection is simply the property of a light that rebounds or bounces back after hitting a surface.

Refraction is when the light, which passes through a surface, undergoes some changes in appearance whenever it usually passes through a medium.

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A 15-turn circular wire loop with a radius of 3.0 cm is initially in a uniform magnetic field with a strength of 0.5 T. The fiel

miskamm [114]

Answer:

0.212V

Explanation:

The induced emf in circular loop is $\epsilon=-d\frac{\phi_B}{dt}=-NA\frac{dB}{dt}$

N = Number of loops = 15

A = Cross sectional Area = $\pi$ $0.03^{2}$ = 0.0009 $\pi$

dB = change in magnetic Field = 0-0.5 = -0.5

dt = time taken = 0.1sec

$\epsilon=-15*0.0009\pi *\frac{-0.5}{0.1}$ = 0.212V

8 0

4 years ago

Mike takes his temperature with a thermometer three times over a 20 minute period and observes the following measurements: 98, 1

Fudgin [204]

Answer:

Available options are;

A. validity; high

B. variability; low

C. reliability; low

D. reactivity; high

Answer is C. reliability; low

Explanation:

Normal body temperature is considered to be 37°C (98.6°F); however, a wide variation is seen. Among normal individuals, mean daily temperature can differ by 0.5°C (0.9°F), and daily variations can be as much as 0.25 to 0.5°C. So we can see that the 98 to 106 to 89 degrees shows that the thermometer is not reliable.

7 0

3 years ago

Read 2 more answers

A 3.00 x 10^2-W electric immersion heater is

andre [41]

Answer

t = 367.77 s = 6.13 min

Explanation:

According to the law of conservation of energy:

$Heat\ Supplied\ By \ Heater = Heat\ Absorbed\ by\ Glass + Heat\ Absorbed\ by\ Water\\Pt = m_gC_g\Delta T_g + m_wC_w\Delta T_w\\$

where,

P = Electric Power of Heater = 300 W

t = time required = ?

m_g = mass of glass = 300 g = 0.3 kg

m_w = mass of water = 250 g = 0.25 kg

C_g = speicific heat of glass = 840 J/kg.°C

C_w = specific heatof water = 4184 J/kg.°C

ΔT_g = ΔT_w = Change in Temperature of Glass and water = 100°C - 15°C

ΔT_g = ΔT_w = 85°C

Therefore,

$(300\ W)(t) = (0.3\ kg)(840\ J/kg.^oC)(85^oC)+(0.25\ kg)(4184\ J/kg.^oC)(85^oC)\\$

8 0

3 years ago

A trough is filled with a liquid of density 835 kg/m3. The ends of the trough are equilateral triangles with sides 4 m long and

Allushta [10]

Answer:

F=523712 N

Explanation:

density=mass/volume

and shape is cubic so

volume=(4)^3

volume=64 m^3

mass=835*64

mass=53440 Kg

Hydrostatic force=53440*9.8=523712 N

4 0

4 years ago

what material can be stored in a container but can also flow from one container to another and it forms powder after some time

Greeley [361]

Answer:

I think it is gas.

PLEASE MARK ME BRAINLIEST

4 0

3 years ago

What is refraction and reflection​

What is refraction and reflection