PHYSICS MIDDLE SCHOOL

Which sphere has a radius of 4 in.? A sphere with volume StartFraction 32 Over 3 EndFraction pi inches cubed. A sphere with volume 36 pi inches cubed. A sphere with volume StartFraction 256 Over 3 EndFraction pi inches cubed. A sphere with volume 288 pi inches cubed.

Answers

Answer 1
Answer:

Answer: The answer is C

Explanation: I just tried it
Answer 2
Answer:

Answer:

c

Explanation:

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Which change is the best example of a physical change?1) a cookie baking
2) paper burning
3) ice cream melting
4) a nail rusting

Answers

The answer would be a nail rusting, but really it could be any of these.

Answer: 3

Explanation:

What is the mechanical advantage of a machine that applies a force of 1000 N to an object when a force of 500 N is applied tothe machine?
0.5
2
500
1500

Answers

Answer:

2

Explanation:

The mechanical advantage of the machine in the problem is 2. By definition, the mechanical advantage of a machine is equivalent to the ratio of its output force to its input force. Since it applies a force of 1000 N to an object, that is its output. Also, since a 500 N force is applied to the machine, that is its input.

Read more on Brainly.com - brainly.com/question/1327554#readmore

Answer:

the answer is "2"

Explanation:

the answer is "2" because the formula for mechanical advantage is  you divide the distance from the fulcrum, the point at which the lever pivots, to the applied force by the distance from the fulcrum to the resistance force.

How does mass effect the speed of a forced object​

Answers

Answer:

the bigger the mass, the smaller the acceleration and the smaller speed

Explanation:

this can be proven from the formula F = ma

F = m×speed/time

Or a practical example is that of a heavy object and a light object if pushed with the same force, it'll be observed that the small object moves faster or with a greater speed than the heavy object

Suppose a logs mass is 5kg .after burning,the mass of the ash is 1kg .explain what may have happened to the other 4kg

Answers


The "missing" 4 kg may have escaped the scene of the fire in the
form of hot gases, and as particles of soot and ash that were seen
leaving in the form of "smoke". 

which is the of these their statements correctly describes a key difference between aerobic activity and anaerobic activity

Answers

aerobic uses oxygen to liberate heat while anaerobic is in the absence of oxygen.

15 POINTS! What are some differences and similarities between Electromagnetic and Mechanical waves?

Answers

Elecromagnetic waves can travel through a vacuum, but a mechanical wave cannot.Mechanical waves can only exist in a medium, such as air or water. Electromagneticwaves behave like waves and particles, but mechanical waves only behavelike waves.
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