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Veseljchak [2.6K]
2 years ago
4

Two ice dancers are at rest on the ice, facing each other with their hands together. They push off on each other in order to set

each other in motion. The subsequent momentum change (magnitude only) of the two skaters will be ____.
Physics
1 answer:
Anna11 [10]2 years ago
4 0

Answer:

<u>zero and it will be the same for each stakers.</u>

Explanation:

From the given information

If we apply the conservation of linear momentum, we will realize that the total momentum before the two ice stakers pushed themselves is equal and it is the same as their momentum after they pushed themselves.

Similarly, before pushing each other, they are both at rest. This implies that their total momentum will be zero before pushing.

SO, if their total momentum before pushing is zero, then after pushing their momentum also will be zero.

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Of the following systems, which contains the most heat?
densk [106]

Answer:d

Explanation:

Given systems are state of matter and do not contain any heat instead Heat is required to change Phase or raise the temperature of the particular system.

For example 600 kg of ice at 0^{\circ}C

Heat Required to convert it to water at 0^{\circ}C is

Q=m\times L

Where L=latent heat of Fusion =334 J/gm

Q=600\times 334\times 1000

Q=200.4 MJ

8 0
2 years ago
Step 1, when solving a two dimensional, multi-charge problem, is to define the vectors. Please identify the next five steps, in
Masja [62]
Step 2: calculate A and B magnitudes
Step 3: calculate x, y components
Step 4: sum vector components
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2 years ago
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The nucleus of an atom has all of the following characteristics except that it
Sedaia [141]

Answer:

THE ANSWER IS: contains nearly all of the atom's volume.

Explanation:

3 0
2 years ago
A rectangular block weighs 240 N. the area of the block in contact with the floor is 20 cm2.calculate the pressure on the floor(
maks197457 [2]

Answer:

12 N/cm²

Explanation:

From the question given above, the following data were obtained:

Weight (W) of block = 240 N

Area (A) = 20 cm²

Pressure (P) =?

Next, we shall determine the force exerted by the block. This can be obtained as follow:

Weight (W) of block = 240 N

Force (F) =.?

Weight and force has the same unit of measurement. Thus, we force applied is equivalent to the weight of the block. Thus,

Force (F) = Weight (W) of block = 240 N

Force (F) = 240 N

Finally, we shall determine the pressure on the floor as follow:

Force (F) = 240 N

Area (A) = 20 cm²

Pressure (P) =?

P = F/A

P = 240 / 20

P = 12 N/cm²

Therefore, the pressure on the floor is 12 N/cm².

7 0
2 years ago
A wire of 1mm diameter and 1m long fixed at one end is stretched by 0.01mm when a lend of 10 kg is attached to its free end.calc
Otrada [13]

Answer:

E = 1.25×10¹³ N/m²

Explanation:

Young's modulus is defined as:

E = stress / strain

E = (F / A) / (dL / L)

E = (F L) / (A dL)

Given:

F = 10 kg × 9.8 m/s² = 98 N

L = 1 m

dL = 10⁻⁵ m

A = π/4 (0.001 m)² = 7.85×10⁻⁷ m²

Solve:

E = (98 N × 1 m) / (7.85×10⁻⁷ m² × 10⁻⁵ m)

E = 1.25×10¹³ N/m²

Round as needed.

5 0
2 years ago
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