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3 years ago

Which of the following is a correct equation for total energy?

Physics

2 answers:

sweet [91]3 years ago

8 0

Answer:

Total energy=Kinetic energy+Potential energy

Explanation:

the total energy will be obtained from the energy of an object in motion and the energy stored in the object

hichkok12 [17]3 years ago

6 0

Answer:

Total energy = Kinetic energy + potential energy

Explanation

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PLEASE HELP DUE IN MINS. Thanks

rjkz [21]

Answer:

"C" I think....

Explanation:

I am really sorry if I am wrong, but if right, I hope this helps!

4 0

3 years ago

Read 2 more answers

A person throws a tennis ball 6 m/s straight up. How long does it take for it to come back to their hand?

Alja [10]

(t) = 2t = 1.22 sec. I believe ...

7 0

3 years ago

Which property helps to explain differences in the specific heat capacities of

tatyana61 [14]

Answer:

D. Forces between molecules

Explanation:

Specific heat capacity of water can be defined as the amount of heat a gram of water must lose or absorb in order to change its temperature by a degree Celsius. It is measured in Joules per kilogram per degree Celsius (J/kg°C). Generally, the specific heat capacity of water is 4.182J/kg°C and is the highest among liquids.

Mathematically, the specific heat capacity of a substance is given by the formula;

$c = \frac {Q}{mdt}$

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

Cohesion is a property of water and it typically refers to the attraction between molecules of water which holds them together.

In Science, the property which helps to explain differences in the specific heat capacities of two substances is the forces between molecules.

This ultimately implies that, the more closely bonded the atoms of a substance are, the higher or greater would be the substance's specific heat capacity. Thus, it varies for the various states of matter i.e solid, liquid and gas.

4 0

3 years ago

HELP Please Hurry

nlexa [21]

The correct answers are:

A plane landing on an aircraft carrier.

Rain sticking to a window.

Two train cars coupling together.

2. The total momentum is zero.

3. 3.6 (kg*m/s) (Option C)

Explanations:

1) In simple terms (not a textbook definition), perfectly inelastic collision is a collision in which two bodies stick together (or becomes one) after a collision. Now let us have a look at the options:

A baseball bouncing off a bat: After collision, the ball and the bat do not stick to one another; therefore, it is NOT a perfectly inelastic collision.

Bumper cars bumping off of each other: After collision, cars bump off of each other, making their collision elastic, not perfectly inelastic collision.

A cue ball hitting an eight ball and stopping: After collision, although the cue ball stops, but all of its momentum will be transferred to the eight ball; and eight ball will start moving, where is cue ball stops. Not a perfectly inelastic collision.

A plane landing on an aircraft carrier: After plan lands, the plane and the aircraft carrier will be incontent with each other; making their collision perfectly inelastic.

Rain sticking to a window: Rain drop sticking to a window means both stick together after a collision, making it a perfectly inelastic collision.

Two train cars coupling together: Again both cars are sticking together, making it a perfectly inelastic collision.

Hence the correct answers are:

A plane landing on an aircraft carrier.

Rain sticking to a window.

Two train cars coupling together

7) Always remember that in a closed system, the total momentum is conserved, meaning:

Total initial momentum = Total final momentum

Initially, bodies are at rest, the total initial momentum (mv) is zero (since (m+2m)*0 = 0; as v = 0). As it is the closed system, the total final momentum will be equal to the total initial momentum. As the total initial momentum is zero, the total final momentum will also be zero.

Hence the correct answer is: The total momentum is zero.

3) As you can see in the table, the initial momentum of each and every entry is equal to the final momentum. In the case of X, as the final momentum is 3.6 kg*m/s, the initial momentum will be same as the final momentum (by considering the pattern in the table); therefore X (the initial momentum) will be 3.6 kg*m/s.

Hence the correct answer is: X = 3.6 (Option C)

6 0

3 years ago

Read 2 more answers

German physicist Werner Heisenberg related the uncertainty of an object's position ( Δ x ) to the uncertainty in its velocity (

timama [110]

According to the information given, the Heisenberg uncertainty principle would be given by the relationship

$\Delta x \Delta v \geq \frac{h}{4\pi m}$