Which pair of objects has the largest gravitational force?Choose the correct answer.


marble and car

marble and baseball

car and bowling ball

There is no gravitational force between any of these pairs of objects.

Answers

Answer 1
Answer:

IF all the pairs are separated by the same distance, then it's the car and the bowling ball.

If I can move them as far apart as I want, then I can make ANY of them have the greatest gravitational attraction between them.


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A pole that is 2.9m tall casts a shadow that is 1.32m long. at the same time, a nearby tower casts a shadow that is 37.75m long. how tall is the tower? round your answer to the nearest meter.

Answers

(2.9)/(1.32)   = (x)/(37.75)

x = 82.93 m

Nothing to deal with physics.
Maths. Scale factor. Year 9.

An example of a high energy electromagnetic wave is a radio wave
a red light wave
an x-ray
an infrared wave
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Give an example of an energy transformation.
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When heat is transferred to a substance explain why the temperature goes up

Answers

An example of a high energy electromagnetic wave is "X-Ray"

When car runs, it's chemical energy (gasoline) converts into mechanical energy

Temperature is the measure of hotness or coldness of the body, so when heat expose to a substance, it's degree of hotness increases & it's temperature increases

Hope this helps!

A 6kg object has 350j of kinetic energy. find the velocity of the object?

Answers


We have no information describing the direction in which
the object is moving, so we're in no position to discuss its
velocity.   ==> We have only speed to work with.

                                      Kinetic energy = (1/2) (mass) (speed²)

                                                   (350 J) = (1/2) (6 kg) (speed²)

Divide each side by  3 kg :    (350J / 3 kg)  =  (speed²)

Take the square root of each side:       Speed  =  10.8 m/s  (rounded)


Units (for the curious/inquisitive):

[Energy] = [work] =        [force] x                [distance]

                             = [mass-distance/time²] x [distance]

                             =  [ kg-meter / sec² ]  x  [ meter ]

                             =  [ kg-meter² / sec² ]  =  Joule

Energy / mass  =  Joule/kg  =  [ meter² / sec² ]  =  (speed²)

   

Occurs when fuel rods produce too much heat

Answers

This is known as nuclear meltdown.

What does the atomic number tell us about an atom of a certain element?

Answers

It tells us the number of protons in the nucleus of each atom of that element.

Which statement best describes how light waves travel in a uniform medium. A. in straight lines. . B. in extending circles. . C. in bent lines. . D. in shrinking ripples

Answers

Light waves travel in straight lines when they are travelling in a uniform medium. This is because the waves are travelling at the same speed.

The answer is a. Straight lines