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koban [17]
3 years ago
12

In the equation for the gravitational force between two objects which quantity must be squared?

Physics
2 answers:
DENIUS [597]3 years ago
4 0

Answer:

The distance "r" must be squared

Explanation:

In the equation F=GMm/r^2, the distance "r" is squared, which represents the distance between masses M and m and G is the gravitational constant.

nalin [4]3 years ago
3 0

Answer:

Distance

Explanation:

trust me

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The human eye is most sensitive to green light of wavelength 505 nm . Experiments have found that when people are kept in a dark
liq [111]

1. 5.94\cdot 10^{14} Hz

The frequency of a photon is given by:

f=\frac{c}{\lambda}

where

c is the speed of light

\lambda is the wavelength

The wavelength of the photon in this problem is

\lambda=505 nm=5.05\cdot 10^{-7}m

So, the frequency of the photon is

f=\frac{3\cdot 10^8 m/s}{5.05\cdot 10^{-7} m}=5.94\cdot 10^{14} Hz

2. 3.94\cdot 10^{-19}J, 2.46 eV

The energy of a photon is given by

E=hf

where

h is the Planck constant

f is the frequency of the photon

The frequency of the photon in this problem is

f=5.94\cdot 10^{14} Hz

so its energy in Joules is

E=(6.63\cdot 10^{-34}Js)(5.94\cdot 10^{14}Hz)=3.94\cdot 10^{-19}J

And since

1 eV = 1.6\cdot 10^{-19}J

The energy in eV is

E=\frac{3.94\cdot 10^{-19} J}{1.6\cdot 10^{-19}J/eV}=2.46 eV

7 0
3 years ago
How can i express 2.99792458 x10^8 in three insignificante figures
Vika [28.1K]
The answer:  3.00 * 10 ⁸ .
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4 0
4 years ago
A girl on roller skates accelerates at a rate of 2 m/sec/sec with a force of 100 N. What is her mass?​
Dvinal [7]

By the newtons Second Law:

F = ma

Solving for m:

m = F / a

m =  100 N / 2 m/s²

<h3>m = 50 kg → ANSWER</h3>
8 0
3 years ago
The absolute magnitude of a star is the amount of light received by Earth.
frutty [35]
B.false......absolute magnitude

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6 0
4 years ago
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A submarine deep underwater releases a bubble of air. The total pressure at this depth is P. The bubble has diameter, D, and abs
Sunny_sXe [5.5K]

Answer:

P V = n R T      ideal gas equation

P2 V2 / P1 V1 = T2 / T1    

V2 / V1 = T2 / T1 * P1 / P2 = T2 P1 / (T1 P2)

V2 / V1 = (1.17 T1) / T1 * (P1 / .22 P1)      assuming absolute temp as 1.17 P1

V2 / V1 = 1.17 / .22 = 5.32

V = 4/3 pi R^3 = 4/3 pi (D/2)^3 = 4/3 pi D^3 / 8 = pi D^3 / 6

V2 / V1 = D2^3 / D1^3

D2 = (V2 / V1 * D1^3)^1/3

D2 = 5.32^1/3 * D = 1.75 D      (D1 = D)

7 0
3 years ago
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