4 years ago

Which of these Would you include in a free body diagram of a coin sitting on a table

Physics

1 answer:

Karo-lina-s [1.5K]4 years ago

4 0

C and you would have to draw the table aswell but you definelty need the forces acting on the object

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A student made a model of an onion skin cell she viewed using a microscope. The scale is 1:500.The students cell model has a len

r-ruslan [8.4K]

The original will be 15\500 to find the real length

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3 years ago

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Estimate the mass of water that must evaporate from the skin to cool the body by 0.45 ∘C. Assume a body mass of 95 kg and assume

hram777 [196]

Answer:

0.0757 kg

Explanation:

m = mass of the body = 95 kg = 95000 g

ΔT = change in the temperature of the body = 0.45 °C

c = specific heat capacity of the body = 4.0 J/(g °C)

M = mass of water evaporated

L = latent heat of vaporization of water = 2260 J/g

Using conservation of heat

Heat gained by water = heat lost by body

ML = m c ΔT

M (2260) = (95000) (4.0) (0.45)

M = 75.7 g

M = 0.0757 kg

4 0

3 years ago

Light passes from a material A, which has an index of refraction of 4/3, into material B, which has an index of refraction of 5/

katrin2010 [14]

Answer:

(b) 32.2°

Explanation:

Using Snell's law as:

$n_i\times {sin\theta_i}={n_r}\times{sin\theta_r}$

Where,

${\theta_i}$ is the angle of incidence ( 30.0° )

${\theta_r}$ is the angle of refraction ( ? )

${n_r}$ is the refractive index of the refraction medium (Material B, n=5 / 4)

${n_i}$ is the refractive index of the incidence medium (Material A, n=4 / 3)

Hence,

${\frac {4}{3}}\times {sin30.0^0}={\frac {5}{4}}\times{sin\theta_r}$

Angle of refraction = $sin^{-1}0.5333$ = 32.2°

5 0

4 years ago

The electrostatic force between two charges located 2 meters apart is 0.10 N. What will the force be between these charges when

Vikentia [17]

Given that 2 m is to .10N

we will set up a ratio & proportion

.10 x
— —
2 1

cross multiply

2x = .10(1)

divide both sides by 2

x (and the answer) = .05 N

6 0

3 years ago

What does the model below represent?

Viefleur [7K]

Answer:

Explanation:

Because we have two reactants and product

5 0

2 years ago