A 4 kg vase sits on a shelf at a height of 1.2m. How much gravitational potential energy is added tot eh base when it is lifted to a shelf of height 1.4 m?

Answers

Answer 1

Answer: Gravitational Potential Energy = mgh

In this case the gravitational potential energy added is that as a result of the change in height.

   = mgΔh g ≈ 9.8m/s²

   = mg(h₂ - h₁)

   = 4*9.8*(1.4 - 1.2)

   = 7.84J

GPE added = 7.84J

Answer 2

Answer:

7.84 J

Explanation:

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If a platinum wire has a resistance of 15 Ω and is connected across the terminals of a 3.0 V flashlight battery, how much current is in the wire?

Answers

The voltage is presented by the equation V = IR where V is voltage in V, I is current in amperes ad R is resistance in ohms. If a platinum wire has a resistance of 15 Ω and is connected across the terminals of a 3.0 V flashlight battery, the current can be solved through V= IR, 3.0 V = I (15 Ω), and the current is 0.2 A.

Which of the following is not an integer?A. -52/13
B. -3.0
C. 48/6
D. 48/5

Answers

Answer:

The answer is D.

Explanation:

A integer can be positive, negative, or 0. So by simplifying all the fractions (making them into mixed numbers) we can find out that D results in a decimal, which is not a integer.

Four landing sites are proposed for a lander. Data about the sites are listed in the table.A 3 column table with 4 rows. The first column is labeled landing site with entries W, X, Y, Z. The second column is labeled height above surface in meters with entries 32, 16, 35, 12. The last column is labeled acceleration due to gravity in meters per second squared with entries 1.6, 3.7, 1.6, 3.7.
At which landing site would the lander have the greatest amount of gravitational potential energy?

A. W
B. X
C. Y
D. Z

Answers

Answer:

Explanation:

The greatest amount of gravitational potential energy at landing site X

What is the greatest gravitational potential energy?

To calculate the gravitational potential energy at each landing site, we can use the formula:

Gravitational Potential Energy (PE) = mass × acceleration due to gravity × height above surface

If the mass is assumed to be constant, we can ignore it and focus on the acceleration due to gravity and height above the surface.

From the table, we can see that the lander would have the greatest amount of gravitational potential energy at landing site X, with a value of 592.8 Joules.

The picture above shows 3 sets of balloons, all with a particular charge. Which of the picture(s) is true? Explain. Then explain why the other 2 pictures are incorrect. Make sure to explain all 3 sets.

Answers

Among all of the others Picture 3 is correct.

We know, Like charges repel each other whereas unlike charges attract each other, In picture 3 they are like charges (both are positive) so, we can repulsion hence, picture is correct!

In picture 1, they are unlike charges, & showing repulsion which is wrong, same In picture 2, they are like charges & showing attraction so they are wrong as well

Hope this helps!

C is correct because they would repel each other A is wrong be they wouldn't repel And B is wrong because they shouldn't be repelling each other

Explain how one physical property each of acid, base and sait is used by man

Answers

Answer:

Hope this helps :)

Thanxx :)

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