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Dmitrij [34]
3 years ago
11

Explain the relationships between gravity, mass, and distance. please write a paragraph

Physics
1 answer:
Gelneren [198K]3 years ago
4 0
Gravity is an attractive force which every object with mass exerts. The "relationship" tells us how much gravity is exerted between two objects. The formula is F  g =  \frac{G M_1 M_2}{D^2}. what this says is that in order to figure out Fg(Force of gravity), we must take into account G( gravitational constant 6.67x10^-11) x M1(mass 1) x M2(mass2) / d^2(ditance squared). Mass is measured in Kg(kilograms). G never changes,and Fg is in Newtons. In terms of planets, you must take into account the radius of the planet within your distance. In Layman terms, You use all three to figure out how much gravity one object exerts on another and vice versa.
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If you remove large amounts of heat from a liquid, what could happen
snow_lady [41]
A liquid becomes a solid when energy is removed. The energy content decreases, and the speed of the particles decrease.
3 0
3 years ago
When the voltage across a steady resistance is doubled, the current?
natima [27]

I'm actually going ahead in the book (DC Circuits) so this isn't really homework but I figured the tag was appropriate....the name of the chapter is Ohm's Law and Watt's Law.

<span>Problem: Calculate the power dissipated in the load resistor, R, for each of the circuits.Circuit (a): V = 10V; I = 100mA; R = ?; Since I know V and I use formula P = IV: P = IV = (100mA)(10V) = 1 W.</span>

The next question is what I'm not sure about:

Question: What is the power in the circuit (a) above if the voltage is doubled? (Hint: Consider the effect on current).

What I did initially was: P = IV = (100mA)(2V) = 2 W

But then I looked at the answer and it said 4 W, then I looked at the Hint again. Then I remembered in the book early on it said "If the voltage increases across a resistor, current will increase."

So question is: When solving problems I have to increase (or decrease) current (I) every time voltage (V) is increased (decreased) in a problem, right? How about the other way around, when increasing current (I), you need to increase voltage (V). I'm pretty sure that's how they got 4 W, but want to make sure before I head to the next section of the book.

P = IV = (200mA)(2V) = 4 W

8 0
3 years ago
If a sound wave travels through air at a speed of 345 m/s, what would be the frequency of a 0.80 m long wave?
den301095 [7]

Answer:

D

Explanation:431.3

7 0
3 years ago
The photeselestric effect is observed when light of a sufficiently high frequency is focused onto a polished metal surface, emit
Helga [31]

Answer:

3.4\cdot 10^{-19} J

Explanation:

In order to convert the work function of cesium from electronvolts to Joules, we must use the following conversion factor:

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

In our problem, the work function of cesium is

E=2.1 eV

so, we can convert it into Joules by using the following proportion:

1 eV : 1.6\cdot 10^{-19} J = 2.1 eV : x\\x=\frac{(1.6\cdot 10^{-19} J)(2.1 eV)}{1 eV}=3.4\cdot 10^{-19} J

8 0
3 years ago
Molecules rearrange and form new molecules reversible
STALIN [3.7K]
1. <span>Molecules rearrange and form new molecules - exchange (they exchange some material in order to produce new things)
2. </span><span>simultaneous decomposition and synthesis - reversible (it can go back)
3. </span><span>bonds broken and elements released - decomposition
4. </span><span>molecules formed from components - synthesis (these components merge and create molecules)</span>
6 0
3 years ago
Read 2 more answers
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