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3 years ago

What is net force?

Physics

2 answers:

Nataliya [291]3 years ago

8 0

Answer:

Explanation:

The net force is the combination of all forces acting on an object.

drek231 [11]3 years ago

5 0

The answer is d my friend :)

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Which of the following describes an element?

bixtya [17]

Answer:

A substance made of two or more types of atoms

Explanation:

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3 years ago

Which has the most momentum?

boyakko [2]

Answer:

Both objects have the same magnitude of momentum.

Explanation:

If an object of mass $m$ is moving at a velocity of $v$ , the momentum of that object would be $m\, v$ .

The $100\; {\rm g}$ ( $0.1\; {\rm kg}$ ) object is moving at a speed of $1\; {\rm m\cdot s^{-1}}$ . The magnitude of the momentum of this object would be $0.1\; {\rm kg} \times 1\; {\rm m\cdot s^{-1}} = 0.1\; {\rm kg \cdot m \cdot s^{-1}}$ .

Similarly, the momentum of the $1\; {\rm g}$ ( $10^{-3}\; {\rm kg}$ ) object moving at a speed of $100\; {\rm m\cdot s^{-1}}$ would be $10^{-3}\; {\rm kg} \times 100\; {\rm m\cdot s^{-1}} = 0.1\; {\rm kg \cdot m \cdot s^{-1}}$ .

Hence, the magnitude of momentum is the same for the two objects.

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2 years ago

How do we find an atom's mass number?

Scorpion4ik [409]

Answer:

To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.

Explanation:

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3 years ago

How far will you travel if you run for 10 minutes at 2 m/s?<br><br> SHOW WORK PLZS

ella [17]

10 minutes are the same as 600 seconds.

If you run 2 meters in 1 second then you run 2 * 600 meters in 600 seconds.

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3 years ago

A young girl slides down a rope. As she slides

hodyreva [135]

Answer:

The girl will move with constant velocity

Explanation:

If after a certain time t_0 the velocity of the girl is v_0 =gt_0 and the upward force on the girl due to rope is mg ,where g is gravitational acceleration. Then the girl will move down with the constant velocity v_0 .

The girl will move with constant velocity,as explained above.

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3 years ago