3 years ago

Mechanical energy is the difference between the kinetic and potential energies of an object. True or False?

Physics

2 answers:

murzikaleks [220]3 years ago

7 0

Answer:

false

Explanation:

Fofino [41]3 years ago

4 0

Answer:

False

Explanation:

Its the sum of those not the difference between them

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A circuit is made of a battery, a light bulb, and a 2 resistor. The battery has a voltage of 3 volts. When connected, the ammete

Monica [59]

Answer:

3ohms

Explanation:

From Ohm's Law

V = IR

V is that voltage = 3volts

I = current = 1amp

R = resistance in ohms

Putting those values into the above formula.

3volts = 1amp×R

Making R the subject

R = 3/1

R = 3ohms

The resistance of the light bulb is 3ohms.

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3 years ago

Which of these objects has kinetic energy?

Damm [24]

Answer:

A ball moving through the air.

Explanation:

The ball has momentum which is a form of kinetic energy.

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3 years ago

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lubasha [3.4K]

Explanation:

yes it is the force that is subjected by the force of gravity only

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2 years ago

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Likurg_2 [28]

Answer: A

Explanation:

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3 years ago

Potassium ions (K+) move across a 7.0 -mm- thick cell membrane from the inside to the outside. The potential inside the cell is

Reil [10]

Explanation:

Relation between potential energy and charge is as follows.

U = qV

or, $\Delta U = q \times \Delta V$

= $1.6 \times 10^{-19} \times 70 \times 10^{-3}$

= $112 \times 10^{-22}$ J

or, = $1.12 \times 10^{20} J$

Therefore, we can conclude that change in the electrical potential energy $\Delta U$ is $1.12 \times 10^{20} J$ .

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2 years ago