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OLEGan [10]
4 years ago
8

When an object is solely under the influence of conservative forces, the sum of its kinetic and potential energies does not chan

ge. True or False
Physics
1 answer:
MArishka [77]4 years ago
4 0

Answer:

True

Explanation:

- A conservative force is a force whose work done does not depend on the path taken, but only on the final and starting point.

- The mechanical energy of an object is defined as the sum of the kinetic energy (K) and the potential energy (U): E = K + U

- The law of conservation of energy states that, in case only conservative forces are acting on the object, the mechanical energy of the object E is conserved

- In case non-conservative forces are acting on the object, the mechanical energy is no longer constant. An example of non-conservative force is the force of friction: when the force of friction is acting on a car in motion, the car is slowed down by the effect of the force, losing some of its kinetic energy, K. If the car is travelling on a flat road, then its potential energy U does not change: this means that the mechanical energy of the car, E, is decreasing, so it is no longer conserved.

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Someone please please help me with this.
Softa [21]
600 g=.6 kg
mgh=pe
.6(10)(1)=6
therefore, the basketball will have roughly 6 joules of ke.
4 0
3 years ago
In a collision experiment, the ratio of the velocity change between two carts of equal inertia is found to equal 1.
VashaNatasha [74]

Answer:

A) Therefore if I double the masses with are in the two terrine they are simplified and the radii of the speeds remain the same

B) If the masses are maintained and the speeds are doubled, the radius of the two speeds remains the same

Explanation:

A vehicle crash problem must be solved with the equation of the moment,

Initial instant Before crash

              p₀ = m v₁ + mv₂

After the crash

            p_{f} = m v_{1f} + m v_{2f}

           p₀ = p_{f}

If the speed ratio before and after the crash is one

           p₀ / p_{f} = 1

We can assume that initially one of the cars was stopped

           m v₁₀ = m v_{2f}

           v₁₀ = v_{2f}

For the two speeds to be equal, the masses of the vehicles must be the same.

A) Therefore if I double the masses with are in the two terrine they are simplified and the radii of the speeds remain the same

B) If the masses are maintained and the speeds are doubled, the radius of the two speeds remains the same

5 0
3 years ago
HELPPPPPP!!!! Jupiter has a gravity that is 2.4 times that of Earth. A person has a mass of 60kg. What is the mass of this perso
mafiozo [28]

60

because mass of an object never change

but weight can change for example if it's

mass is 60kg 5he wieght will be 60kg * 9.8m/s²

=588N

3 0
3 years ago
An asteroid that has an orbital period of 3 years will have an orbital with a semi-major axis of about _____ years.
Airida [17]

Answer:

An asteroid that has an orbital period of 3 years will have an orbital with a semi-major axis of about  2 years.

Explanation:

Given;

orbital period of 3 years, P = 3 years

To calculate the years of an orbital with a semi-major axis, we apply Kepler's third law.

Kepler's third law;

P² = a³

where;

P is the orbital period

a is the orbital semi-major axis

(3)² = a³

9 = a³

a = a = \sqrt[3]{9} \\\\a = 2.08 \ years

Therefore, An asteroid that has an orbital period of 3 years will have an orbital with a semi-major axis of about  2 years.

5 0
3 years ago
which best describes what happens with the sonar to sound pulses from a ship after they hit the ocean floor?
lakkis [162]

Answer:

With sonar, what happens to sound pulses from a ship after they hit the ocean floor? ... They bounce back to the ship.

Explanation:

3 0
3 years ago
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