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dolphi86 [110]
3 years ago
7

What statement about speed and or velocity is true? A.speed is constant B.speed is measured over time C. Velocity has both speed

and direction D. Speed has direction and velocity
Physics
1 answer:
Evgesh-ka [11]3 years ago
5 0

Answer:

B. Speed is measured over time

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Objects with masses of 135 kg and a 435 kg are separated by 0.500 m. Find the net gravitational force exerted by these objects o
IrinaVladis [17]

Answer:

The net gravitational force on the mass is 1.27\times 10^{-5}

Explanation:

We have by Newton's law of gravity the force of attraction between masses m_{1},m_{2}

F_{att}=G\frac{m_{1}m_{2}}{r^{2}}

Applying vales we get

Force of attraction between 135 kg mass and 38 kg mass is

F_{1}=6.67\times 10^{-11}\frac{135\times 38}{(0.25)^{2}}\\\\F_{1}=5.47\times 10^{-6}N

Force of attraction between 435 kg mass and 38 kg mass is

F_{2}=6.67\times 10^{-11}\frac{435\times 38}{(0.25)^{2}}\\\\F_{2}=1.76\times 10^{-5}N

Thus the net force on mass 38.0 kg is F_{2}-F_{1}=1.76\times 10^{-5}-5.47\times 10^{-6}\\\\F_{2}-F_{1}=1.27\times 10^{-5}

8 0
4 years ago
A 20 kg block rests on a rough horizontal table. A rope is attached to the block and is pulled with a force of 80 N to the left
statuscvo [17]

Explanation:

it will move to thr left?

4 0
3 years ago
An easy 20 points + brainiest.
Papessa [141]

Answer:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, Milky Way ;-;

4 0
2 years ago
your friend wants to know the amount of salt added to her favorite fast food French fries. what would you recommend that she do
jeka94

Every fast-food chain is required by law to make the nutrition content of the
items on its menu publicly available.

My friend should walk into her favorite place, or into the nearest McRonald's,
Bendy's, Tennessee Fried Turkey, Bulgur King, Plucky Please, White Palace,
Pita Hut, Carl's Senior, Back in the Box, or any of those others, ask to see
the Manager, and ask the manager for a chart of nutritional information that
includes their french fries. 

To be nice about it, she should do this at a time when the place is not too busy,
and the manager doesn't have a lot of more-important things that <em>need to be
done</em>
<em>right now</em>.

Under the french fries, look at the serving size, and the figure for "Sodium"
in that serving, which is the nutrient that your body gets from salt.  Less is
better.  More is worse.  For an adult, the CDC Institute of Medicine says
that 1500mg a day is 'adequate' for an adult.  The US Food and Drug
Administration recommends that adults should get 'no more than' 2300mg
in a day. People who have high blood pressure are supposed to watch it,
and take in a lot less sodium. 

And there are organizations with official-sounding names that totally dispute
all of this.

But to answer your question, that's what she should do to learn the amount
of salt used at the place where likes to get her french fries.


5 0
3 years ago
Which subatomic particle are located in most of the space within an atom
Ratling [72]
Electrons make up most of the volume of an atom
4 0
3 years ago
Read 2 more answers
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