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laiz [17]
3 years ago
7

A ray diagram is shown.

Physics
2 answers:
Rufina [12.5K]3 years ago
8 0

Answer:

X

Explanation:

lisov135 [29]3 years ago
6 0

Answer:

X

Explanation:

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State the relative position for the sun and earth during the lunar eclipse (ASAP)
Mademuasel [1]

Answer:

Solar eclipses result from the Moon blocking the Sun relative to the Earth; thus Earth, Moon and Sun all lie on a line. Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.

8 0
3 years ago
Find a numerical value for ρearth, the average density of the earth in kilograms per cubic meter. use 6378km for the radius of t
Andre45 [30]

Answer:

5501 kg/m^3

Explanation:

The value of g at the Earth's surface is

g=\frac{GM}{R^2}=9.70 m/s^2

where G is the gravitational constant

M is the Earth's mass

R=6378km = 6.378 \cdot 10^6 m is the Earth's radius

Solving the formula for M, we find the value of the Earth's mass:

M=\frac{gR^2}{G}=\frac{(9.81 m/s^2)(6.378\cdot 10^6 m)^2}{6.67\cdot 10^{-11}}=5.98\cdot 10^{24}kg

The Earth's volume is (approximating the Earth to a perfect sphere)

V=\frac{4}{3}\pi r^3 = \frac{4}{3}\pi (6.378\cdot 10^6 m)^3=1.087\cdot 10^{21} m^3

So, the average density of the Earth is

\rho = \frac{M}{V}=\frac{5.98\cdot 10^{24} kg}{1.087\cdot 10^{21} m^3}=5501 kg/m^3

4 0
3 years ago
Read 2 more answers
Describe how mass and distance affect gravitational force?
ryzh [129]
It depends. The strength of gravitational force between non other than two objects depends on two factors. Mass and distance. The force of gravity and masses exert on each other. Making a consequence if one of the masses are doubled, the force of gravity of the the objects is doubled.

Hope this helps.
7 0
3 years ago
Read 2 more answers
If f^-1(y) is the inverse of f(x) which statements must be true?
Salsk061 [2.6K]
Let us assume f(x) = 2x - 5
f⁻¹(x) = (x + 5)/2
f(f⁻¹(x)) = 2((x + 5)/2) - 5 = x
f⁻¹(f(x)) = (2x - 5 + 5)/2 = x
The domain of a function is the range of its inverse and vice versa
The range of a function is the domain of its inverse and vice versa
Therefore, statements A, B, D and E are true
6 0
3 years ago
An astronaut's weight on earth is 800 N. <br> What is his weight on Mars, where g=3.76m/s2?
gizmo_the_mogwai [7]

weight = mg

W on earth = 800N

mg = 800 N        

m(9.8 m/s²)= 800N

dividing 9.8 both sides

m=800/9.8          ( as g=9.8m/s² on earth)

m=81.63 kg

Now weight on Mars

w=mg

 =(81.63kg) ×(3.76m/s²)

w=306N


4 0
3 years ago
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