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Leno4ka [110]
3 years ago
13

HELP ME PLEASE AND THANK UUU

Physics
1 answer:
pickupchik [31]3 years ago
6 0

Answer:

D.

Explanation:

Work is done when a force moves its point of application a distance in the direction of that force.

Work = force × distance.

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A 3-kg object is attached to a spring and moving in simple harmonic motion. Its angular frequency is 20 rads/sec. When the mass-
Trava [24]

Answer:19.5 J

Explanation:

Given

mass of block=3 kg

angular frequency=20 rad/sec

spring constant k=\omega _n^2m=1200 N/m

we know total energy remain conserved

E_T at x=0.1 m

E_T=E_P+E_K

Where E_K=kinetic energy

E_P=potential Energy

E_P=\frac{1}{2}kx^2

E_P=600\times 0.01=6 J

E_K=\frac{1}{2}mv^2

E_K=\frac{1}{2}\times 3\times 3^2=13.5 J

E_T=13.5+6=19.5 J

When mass reaches amplitude its velocity becomes zero

there is only potential energy which is equal to Total energy

E_T=E_P=19.5 J

7 0
3 years ago
1. the change in position of an object from start to finish, a vector quantity model 2. a portion of space that contains a value
VladimirAG [237]

1. the change in position of an object from start to finish, a vector quantity . . . . .<em> displacement</em>

2. a portion of space that contains a value for a measurable quantity at every point in space . . . . .<em> field </em>

3. speed = (distance) / <em>(time to cover the distance)</em>

4. the length of the entire path an object travels from start to finish . . . . . <em>distance</em>

5. a measurement that has both magnitude and direction . . . . . <em>vector</em>

6. a change in displacement with respect to time . . . . .<em> velocity</em>

7. a mental or physical construct or description that describes a physical phenomenon . . . . . <em>model</em>

8. a change in velocity with respect to time . . . . . <em>acceleration</em>

9. a measurement that only expresses magnitude, such as time, temperature, distance, and speed . . . . . <em>scalar</em>

10. objects that are thrown or launched in the air and are subject to gravity . . . . . <em>projectile</em>

8 0
4 years ago
Read 2 more answers
A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it
Ilia_Sergeevich [38]

Below is the attachment of the solutions.

5 0
4 years ago
What causes chronic strain
Dovator [93]

Answer:

Strains can be acute or chronic. An acute strain is caused by trauma or an injury such as a blow to the body; it can also be caused by improperly lifting heavy objects or over-stressing the muscles. Chronic strains are usually the result of overuse--prolonged, repetitive movement of the muscles and tendons.

Explanation:

3 0
3 years ago
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A 86 kg human stands on the surface of Venus. The mass of Venus is 4.9 × 1024 kg and its radius is 6.1 × 106 m. Collapse questio
iris [78.8K]

Answer:

755.37 N

Explanation:

We are given that

Mass of venus=m_1=4.9\times 10^{24}kg

Radius=r=6.1\times 10^6m

Mass of human=m_2=86 kg

We know that the gravitational force between two bodies

F=G\frac{m_1m_2}{r^2}

Where G=Gravitational constant=6.67\times 10^{-11}Nm^2/kg^2

Using the formula

The magnitude of the gravitational force exerted by Venus on the human=F=\frac{6.67\times 10^{-11}\times 86\times 4.9\times 10^{24}}{(6.1\times 10^6)^2}

The magnitude of the gravitational force exerted by Venus on the human=F=755.37N

7 0
3 years ago
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