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mestny [16]
3 years ago
10

How should scientists express very large numbers when reporting data ?

Physics
2 answers:
Oxana [17]3 years ago
8 0
Into scientific notation
Ira Lisetskai [31]3 years ago
7 0
To get the best possible answer. (sorry if im wrong)
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It's nighttime, and you ve dropped your goggles into a 3.2-m-deep swimming pool. If you hold a laser pointer 0.90 m above the ed
yanalaym [24]

Answer:

The distance of the goggle from the edge is 5.30 m

Explanation:

Given:

The depth of pool (d) = 3.2 m

let 'i' be the angle of incidence

thus,

i = tan^{-1}(\frac{2.2}{0.90})

i = 67.75°

Now, Using snell's law, we have,

n₁ × sin(i) = n₂ × 2 × sin(r)

where,

r is the angle of refraction

n₁ is the refractive index of medium 1 = 1 for air

n₂ is the refractive index of medium 1 = 1.33 for water

now,

1 × sin 67.75° = 1.33 × sin(r)

or

r = 44.09°

Now,  

the distance of googles = 2.2 + d×tan(r)  = 2.2 + (3.2 × tan(44.09°) = 5.30 m

Hence, <u>the distance of the goggle from the edge is 5.30 m</u>

5 0
3 years ago
Will mark brainlest helpp!!!!!!​
Luda [366]

Answer:

I don't know if it is correct or not.

6 0
3 years ago
Read 2 more answers
The student places 0.5 kg of potato into a pan of water.
nasty-shy [4]

Answer:

136000 J or 136 kJ

Explanation:

Formula

Heat = m * c * deltaH

Givens

m= 0.5 kg

c = 3400 J / (kg * oC)

Deltat = (100oC - 20oC)

deltat = 80oC

Solution

Heat = 0.5 kg * 3400 J/(kg* oC) * 80oC

Heat = 136000 Joules

Heat = 136 kg

Technically there is only 1 place of accuracy.

6 0
3 years ago
The tip of a fan blade is 0.61 m from the center of the fan. The fan turns at a constant speed and completes 2 rotations every 1
Liono4ka [1.6K]
Time period of fan (t) = 1 / 2 = 0.5 seconds

Angular velocity (ω)= 2π/t
ω = 4π

v = ωr
v = 4π x 0.61
v = 7.66 m/s
7 0
3 years ago
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When sound waves cause the eardrum to vibrate, these vibrations are immediately passed on to the _______________.
Lilit [14]

Answer:

Three small bones in the mid ear

Explanation:

3 0
3 years ago
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