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8_murik_8 [283]
3 years ago
15

Which of these models of the solar system first proved that the sun is at one of the foci of Earth's elliptical orbit?

Physics
2 answers:
Ivenika [448]3 years ago
5 0
Heliocentric model is the name of the model that shows that earth orbits the sun

xxTIMURxx [149]3 years ago
3 0

Answer:

The correct answer is the Kepler Model

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Determine the pressure P of a 450K Oxygen gas in a gas chamber when its initial pressure is 175Pa has a temp 300K
FrozenT [24]

Answer:

262.5Pa

Explanation:

Given parameters:

P1  = 175Pa

T1  = 300K

T2  = 450K

Unknown:

P2  = ?

Solution:

To solve this problem, we are going to use an adaptation of the combined gas law.

           \frac{P1}{T1}    = \frac{P2}{T2}  

  Insert the parameters and solve;

           \frac{175}{300}    = \frac{P2}{450}  

          P2 = 262.5Pa

8 0
3 years ago
A 1.25 x 10-4 C charge is moving5200 m/s at 37.0° to a magnetic fieldof 8.49 x 10-4 T. What is the magneticforce on the charge?
juin [17]

0.0003321 Newtons

Explanation

We are given the charge, its velocity, and the magnetic field strength and direction. We can thus use the equation to find the force

\begin{gathered} F=qvBsinθ \\ where\text{ F is the magnetic force} \\ q\text{ is the charge} \\ v\text{ is the velocity of the charge} \\ Bis\text{ the magnetic field} \\ \theta\text{ is the angle} \end{gathered}

so

Step 1

Let

\begin{gathered} q=1.25*10^{-4\text{ }}C \\ v=5200\frac{m}{s} \\ \theta=37\text{ \degree} \\ B=8.49*10^{-4}T \end{gathered}

now, replace

\begin{gathered} F=qvBs\imaginaryI n\theta \\ F=1.25*10^{-4}\text{ C*5200 }\frac{m}{s}*8.49*10^{-4}Tsin(37) \\ F=0.0003321\text{ Newtons} \\  \end{gathered}

so, the answer is

0.0003321 Newtons

I hope this helps you

7 0
1 year ago
you drop a 2 kg book to a friend who stand on the ground at distance D=10.0 m below, if your friends out streched hand at distan
MariettaO [177]
Work is defined as force*displacement so total d=8.5m and force will be 2kg*g which is roughly 20N of force so W = 20N*8.5m=170J

For part b the gravitational energy is m*g*h so gravitational energy = 200J since 2kg*10 m/s^2 *10m so the change since the work is 170 j means total change is 170J and 30J is left
8 0
4 years ago
Read 2 more answers
Ex 2) A cannon ball is shot straight up into the air with an initial velocity of 25 m/s[Up).
USPshnik [31]

Explanation:

S=(V^2-U^2)/2a a=g (gravity) a=10

=(0^2-25^2/2*(-10)

=625/20

=31.25m

6 0
3 years ago
I need help with this. -3x-7=18​
miskamm [114]

the answer is

-8.33333333

4 0
3 years ago
Read 2 more answers
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