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3 years ago

What is the weight of a 300kg human on earth

Physics

1 answer:

Alborosie3 years ago

5 0

2940‬N

Explanation:

Given parameter:

Mass of the human = 300kg

Unknown:

Weight of human on earth.

Solution:

Mass is a fundamental quantity that measures the amount of matter contained in a substance.

Weight of a body is the force that is acting on it due to the gravitational pull

Weight = mass x acceleration due to gravity

acceleration due to gravity = 9.8m/s²

Inputting the parameters:

Weight = 300 x 9.8 = 2940‬N

Learn more:

Weight and mass brainly.com/question/5956881

#learnwithBrainly

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An object is made of glass and has the shape of a cube 0.13 m on a side, according to an observer at rest relative to it. Howeve

Vlad1618 [11]

Answer:

$v=0.9833\ c$

Explanation:

The density changes means that the length in the direction of the motion is changed.

Therefore,

$\text{Density} = \frac{m}{lwh}$

Given :

Side, b = h = 0.13 m

Mass, m = 3.3 kg

Density = 8100 $kg/m^3$

So,

$8100=\frac{3.3}{l \times 0.13 \times 0.13}$

$l=\frac{3.3}{8100 \times 0.13 \times 0.13}$

l = 0.024 m

Then for relativistic length contraction,

$l= l' \sqrt{1-\frac{v^2}{c^2}}$

$0.024= 0.13 \sqrt{1-\frac{v^2}{c^2}}$

$0.184= \sqrt{1-\frac{v^2}{c^2}}$

$0.033= 1-\frac{v^2}{c^2}}$

$\frac{v^2}{c^2}= 0.967$

$\frac{v}{c}=0.9833$

$v=0.9833\ c$

Therefore, the speed of the observer relative to the cube is 0.9833 c (in the units of c).

3 0

3 years ago

Absolute zero (K=0 or -273.15°C) is what temperature on the Farenheit scale? a) 459.4°F b) -301.43 °F c) 233.05°F d) -40.15°F e

ANEK [815]

Answer:

e) None of these is true

Explanation:

Given that

Temperature = 0 K

We know that relationship between kelvin and Farenheit scale

$\dfrac{K-273}{100}=\dfrac{F-32}{180}$

Now by putting the values

$\dfrac{K-273}{100}=\dfrac{F-32}{180}$

$\dfrac{0-273}{100}=\dfrac{F-32}{180}$

So F= - 459.67°F

So we can say that 0 K is equal to - 459.67°F.

So the our option e is correct.

3 0

4 years ago

What is speed of light in crown glass?

german

Answer:

1.97 x 10^8 m/s

Explanation:

refractive index of crown glass with respect to air, n = 1.52

speed of light in air, c = 3 x 10^8 m/s

Let v be the speed of light in crown glass.

By use of the definition of refractive index

$n = \frac{c}{v}$

where, n be the refractive index of crown glass, c be the speed of light in vacuum and v be the speed of light in crown glass

$1.52 = \frac{3 \times 10^{8}}{v}$

$v = \frac{3 \times 10^{8}}{1.52}$

v = 1.97 x 10^8 m/s

Thus, the speed of light in crown glass is 1.97 x 10^8 m/s.

5 0

3 years ago

FASTTT FOR BRAINLIST

telo118 [61]

The answer should be A?

7 0

2 years ago

Our favorite program runs in 10 seconds on computer A, which has a 4 GHz. clock. We are trying to help a computer designer build

Alona [7]

Answer:

The rate clock is about

F = 8 GHz

Explanation:

f₁ = 4 G Hz , t₁ = 10 s , t₂ = 6s , f₂ = 1.2 f₁

Can organize to find the rate clock the designer build to the target so

X / 4 Ghz = 10 s , 1.2 X / Y = 6 s

X * Y = 10 s ⇒ F = 10 s

1.2 * 4 G Hz = 6 s

F = 10 * ( 1.2 * 4 G Hz ) / 6

F = 10 * ( 1.2 * 4 x 10 ⁹ Hz ) / 6

F = 8 x 10 ⁹ Hz

F = 8 GHz

3 0

3 years ago