3 years ago

An object's describes it's distance and direction from a reference point .

Physics

2 answers:

Ainat [17]3 years ago

4 0

6: velocity i hpe this is what your looking for

7nadin3 [17]3 years ago

3 0

The answer is 4: position.

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How much kinetic energy does a 1500 kg car have if it’s moving at 15 m/s

Tresset [83]

Answer:

Mass of car m = 1500 kg

velocity v = 15 m/s

kinetic energy = ½ mv2

= ½ x 1500 x (15)2

= 1687501 kg m2 /s2

= 168750J

Explanation:

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2 years ago

The nebular theory also predicts that the cloud should heat up as it collapses. what physical law explains why it heats up?

Anna [14]

The physical law that explains that is the law of conservation of energy which states that he energy of an isolated sistem remains constant

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2 years ago

Which of the following is a contact force?

erica [24]

Option C Magnetic force

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2 years ago

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A battery has a terminal voltage of 12.0 V when no current flows. Its internal resistance is 2.0 Ω. If a 4.6 Ω resistor is conne

rosijanka [135]

Answer:

Check attachment for solution

Explanation:

Given that 12V battery

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3 years ago

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You want to slide a 0.39 kg book across a table. If the coefficient of kinetic friction is .21, what force is required to move t

uranmaximum [27]

Find the force that would be required in the absence of friction first, then calculate the force of friction and add them together. This is done because the friction force is going to have to be compensated for. We will need that much more force than we otherwise would to achieve the desired acceleration:

$F_{NoFric}=ma=0.39kg \times0.18 \frac{m}{s^2} =0.0702N$

The friction force will be given by the normal force times the coefficient of friction. Here the normal force is just its weight, mg

$F_{Fric}=0.39kg \times 9.8 \frac{m}{s^2} \times 0.21=0.803N$

Now the total force required is:

0.0702N+0.803N=0.873N

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2 years ago