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lubasha [3.4K]
3 years ago
15

All objects within a closed system tend to move

Physics
1 answer:
Charra [1.4K]3 years ago
4 0

Explanation is in the file

tinyurl.com/wpazsebu

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I am Lyosha [343]

Answer:

9 meters

Explanation:

Given:

Mass of Avi is, m=40\ kg

Spring constant is, k=176,400\ N/m

Compression in the spring is, x=20\ cm=0.20\ m

Let the maximum height reached be 'h' m.

Now, as the spring is compressed, there is elastic potential energy stored in the spring. This elastic potential energy is transferred to Avi in the form of gravitational potential energy.

So, by law of conservation of energy, decrease in elastic potential energy is equal to increase in gravitational potential energy.

Decrease in elastic potential energy is given as:

EPE=\frac{1}{2}kx^2\\EPE=\frac{1}{2}\times 176400\times (0.20)^2\\EPE=88200\times 0.04=3528\ J

Now, increase in gravitational potential energy is given as:

GPE=mgh=40\times 9.8\times h=392h

Now, increase in gravitational potential energy is equal decrease in elastic potential energy. Therefore,

392h=3528\\\\h=\frac{3528}{392}\\\\h=9\ m

Therefore, Avi will reach a maximum height of 9 meters.

6 0
3 years ago
What would you get if you split a bar magnet in the middle?
ipn [44]

Answer:

I believe it's the first option

5 0
3 years ago
A exercise ball is on a table 2.5 m above the ground. What is the mass
horsena [70]

Answer:

2.27kg

Explanation:

The Potential energy gained = Force gravity× Height

Force gravity on the ball is GPE/ height

56.8/2.5=22.72N

the mass = 22.72/10= 2.27kg

4 0
3 years ago
I need help the option for D is the golfball isnt accelerating
algol13

Answer:

es b

Explanation:

no se

8 0
3 years ago
3. Two cars, both with a mass of 500 kg, are traveling down a road. The first car has a velocity of 65 m/s east and the second c
fenix001 [56]

Answers:

a) Momentum for Car 1: p_{1}=32500kg.m/s East

   Momentum for Car 2:p_{2}=42500kg.m/s West

b) Car 2 has the greater momentum

Explanation:

a) The linear momentum p is given by the following equation:

p=m.v (1)

Where m is the mass of the object and v its velocity.

In this case both cars have a mass of 500kg but different velocities (v_{1}=65m/s east for car 1 and v_{2}=85m/s west for car 2).

For Car 1:

p_{1}=m.v_{1} (2)

p_{1}=(500kg)(65m/s) (3)

p_{1}=32500kg.m/s (4)

For Car 2:

p_{2}=m.v_{2} (5)

p_{2}=(500kg)(85m/s) (6)

p_{2}=42500kg.m/s (7)

b) Having the result of the lineal momentum for both cars, we know Car 2 has the larger momentum, this can be known because Car 2 has a greater velocity.

So, if momentum is directly proportional to the mass and the velocity of the object, both objects have the same mass but different velocities; the object with greater mass will have the greater momentum.

5 0
3 years ago
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