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Serhud [2]
2 years ago
6

A 68.5 kg astronaut is doing a repair in space on the orbiting space station. she throws a 2.25 kg tool away from her at 3.20 m/

s relative to the space station. with what speed and in what direction will she begin to move

Physics
1 answer:
skad [1K]2 years ago
8 0
Hopefully this will help you

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1. How do you determine which between the two object has a greater amount of potential energy?
jeka94

Answer:

All of these answers are dependent upon the specific scenario, but here are some general answers.

1. An object with a greater height will have more potential energy.

2. Potential energy can be changed into kinetic energy as an object falls. It loses height (potential energy) and gains speed (kinetic energy).

3. Depends on what scenario your class had.

5 0
2 years ago
Describe briefly with used of practical knowledge the effect of the voltage stores across and current
DaniilM [7]

Answer:

Answer in explanation

Explanation:

The path of flow of circuit is called electric circuit. In an electric circuit, resistances are connected in two different ways, which are:

1- Series Combination of Resistances

2- Parallel Combination of Resistances  

<u>Series combination of resistances </u>

In series combination resistors are connected end to end, and there is only one path for the flow of current.  

Characteristics Of Series Circuit:

1. In series circuit there is only one path for the flow of current.

2. Same amount of current flows through each resistor.

I = I₁ = I₂ = I₃ = In

3. Total voltage of the battery is equal to the sum of voltages across each resistor.

V = V₁ +V₂ + V₃ + ... + Vn

4. In series combination the combined resistance of the resistors can be obtained by adding the value of each resistor.

R  =  R₁ + R₂ + R₃ + … + Rn

<u>Parallel combination of resistances </u>

Resistances are set to be connected in parallel, when each of them is connected directly from the terminals of electric source.  

Characteristics Of Series Circuit:

1.  There are more than one path for the flow of current.

2. The value of potential difference remains constant on each resistor.

V = V₁ = V₂ = V₃ = Vn

3. Total current is equal to the sum of current passing through each resistor.

I = I₁ + I₂ + I₃ +...+ In

4. Reciprocal of equivalent resistance is equal to the sum of reciprocals of resistances connected in parallel.  

1/R   =  1/R₁  + 1/R₂  + 1/R₃  + … + 1/Rn  

The circuit diagrams are in attachment.

7 0
3 years ago
Physics
Inessa05 [86]

Answer:

Motion maps are used to illustrate the direction and position of an object. Using the motion map, the description of the object position and velocity is as follows:

The object starts its movement from the origin with a large velocity, before moving back to the origin with a smaller velocity. It stops for 1 second in the origin, then moves away with a larger velocity, Finally, it moves back towards the origin with a smaller velocity.

See attachment for the motion map, where the number on each arrow in the map, represents the position of the object.

Note that; the long arrow means large velocity while the short arrow means small velocity

Next, we analyze the direction and position using the arrows

The first arrow shows that the object starts from the origin with a large velocity

The direction and length of the second arrow show that, the object then returned to the origin with a smaller velocity.

There is a dot in front of the second arrow. This dot indicates that the object stops for one second.

The third arrow means that, the object moved from the origin with a larger velocity

The direction and position of the fourth and fifth arrows indicate that the object then moves towards the origin, with a smaller velocity.

Explanation:

6 0
2 years ago
Two students are running down the hallway towards each other. Student 1 has a mass of 107kg and is running to the right at 4.1m/
antiseptic1488 [7]

Answer:

Hi

Explanation:

You are awesome

3 0
2 years ago
A bullet of inertia m traveling at speed v is fired into a wooden block that has inertia 4m and rests on a level surface. The bu
GREYUIT [131]

Answer:

F = mv²/(18d)

7

Explanation:

Momentum before collision = momentum after collision

mv = m(v/3) + (4m) V

v = v/3 + 4V

4V = 2v/3

V = v/6

The acceleration of the block is:

v² = v₀² + 2aΔx

(0 m/s)² = (v/6)² + 2ad

2ad = -v²/36

a = -v²/(72d)

The friction force is therefore:

∑F = ma

-F = (4m) (-v²/(72d))

F = mv²/(18d)

The energy dissipated during the collision is:

ΔE = 1/2 mv² − (1/2 m(v/3)² + 1/2 (4m)(v/6)²)

ΔE = 1/2 mv² − (1/18 mv² + 1/18 mv²)

ΔE = 1/2 mv² − 1/9 mv²

ΔE = 7/18 mv²

The energy dissipated by the friction force:

W = Fd

W = 1/18 mv²

The ratio is:

ΔE / W

(7/18 mv²) / (1/18 mv²)

7

5 0
3 years ago
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