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3 years ago

15

If gravity is the only force present, what is the total mechanical energy of a

1 answer:

Y_Kistochka [10]3 years ago

3 0

Answer:

(D) is correct option.

Explanation:

At a particular time, the potential energy of a rock is 500 J and its kinetic energy is 600 J.

It is required to find the mechanical energy of the rock. Mechanical or total energy is the sum of kinetic and potential energy. So,

TE = K+ P

TE = 500 J + 600 J

TE = 1100 J

So, the total mechanical energy of a rock is 1100 J. Hence, the correct option is (D).

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Latest information on quantum dots.

Lunna [17]

Quantum dots are crystals of a fluorescent semiconductor material with a diameter of as few as 10 to 100 atoms. They are used as labels for imaging molecules because of their very narrow fluorescence, brightness, and resistance to photobleaching.

This is the most recent information I could find.

I hope this helps:)

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4 years ago

A gas is placed in a 5.0-mL syringe. It exerts 127 mm Hg of pressure on the inside walls of the syringe. The syringe's plunger i

Gekata [30.6K]

Answer:264.58 mm of Hg

Explanation:

Given

Volume of gas $V_1=5\ mL$

Pressure $P_1=127\ \text{mm of Hg}$

If the Plunger is pressed volume is reduced to

$V_2=2.4\ mL$

As temperature of the gas does not change so it follows boyle's law

According to which

$P_1V_1=P_2V_2$

$127\times 5=P_2\times 2.4$

$P_2=264.58\ \text{mm of Hg}$

8 0

3 years ago

HELP ASAP!! The voltage from a power supply to a light bulb is increased by 2 volts and the current is recorded. A graph of this

uysha [10]

Answer:

It is a resistor since as u increases v increases so they are directly propotional

3 0

3 years ago

The acceleration of a car is 0.33 m/s squared. if the applied force were cut in half, what would you predict the acceleration wo

NNADVOKAT [17]

0.17m/s²

Explanation:

According to newtons second law "the force on a body is depends on its mass and acceleration"

Force = mass x acceleration.

The more the mass and acceleration, the more the force a body possess.

Given that the acceleration of the body is 0.33m/s²

Force = 0.33 x mass

If the force on the body is halved, the acceleration will also be halved;

i.e:

Force = F

$\frac{F}{2}$ = 0.33 x mass

F = $\frac{1}{2}$ x 0.33 x mass

F = 0.17 x mass

Force = acceleration x mass

Acceleration is 0.17m/s²

learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

3 0

3 years ago

A car starts from rest and accelerates at a rate of 5 m/s2 for 5 seconds. What is the velocity of the car?

Greeley [361]

Please find attached photograph for your answer.

7 0

3 years ago