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3 years ago

What would always be true of an object possessing a potential energy of 0 joules

1 answer:

6 0

if the object has 0 potential energy it means it is on ground ..
explanation :
to measure potential energy we take ground as a reference point but when object is placed on reference point i.e ground then height is 0..
as potential energy = mgh .. here h becomes 0 so potential energy is 0 joules..

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Alex_Xolod [135]

Explanation:

It is given that, two teams are playing tug of war.

Force applied by Team A, $F_A=450\ N$

Force applied by Team B, $F_B=415\ N$

We need to find the net force acting on the rope. It is equal to :

$F_{net}=F_A-F_B$

$F_{net}=450-415$

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So, the net force acting on the rope is 35 N and it is acting toward right. Hence, this is the required solution.

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3 years ago

What is moral science?

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Moral science is social sciences or philosophy.

That's it, really!

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4 years ago

In a pulley system, two blocks are connected by a rope as shown below. The coefficient of static friction between block A and th

umka21 [38]

Hi there!

We can begin by doing a summation of forces for each block.

Block A:

This block has the force of tension (in direction of acceleration +) and static friction (opposite direction -) acting on it. Thus:

$\Sigma F_A = T - F_s\\\\m_Aa = T - \mu m_Ag$

Block B:

This block has the force of tension (opposite of acc. -) and gravity (in direction of acc +), working on it.

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Add both of the expressions and solve for the maximum mass of Block B.

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To find the minimum value, we can set a = 0, so:

$0 = m_Bg - \mu m_Ag\\\\\mu m_Ag = m_B g\\\\0.8(20)(9.8) = m_B (9.8)\\\\m_B = \frac{0.8(20)(9.8)}{9.8)} = \boxed{16 kg}$

The block must weigh > 16 kg for block A to move.

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3 years ago

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tatyana61 [14]

Answer:

Explanation:

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Therefore in the given question, Amy's measurement of the salt's mass is accurate because her final value is close to all the measured values.

ii. Precision in measurement is a term that is used to describe the closeness of different measured values to each other. It relates the keenness in the measured values.

Thus, Amy's measurements of the salt's mass is precise because the values of the masses are close to one another.

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3 years ago

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Answer:

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