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pentagon [3]
8 months ago
15

I need help on number 5. We need to use one of the four kinematics equations.

Physics
1 answer:
Gnom [1K]8 months ago
5 0

ANSWER

35.02m

EXPLANATION

Parameters given:

Initial velocity, u = 26.2 m/s

When the vase reaches its maximum height, its velocity becomes 0 m/s. That is the final velocity.

We can now apply one of Newton's equations of motion to find the height:

v^2=u^2-2as

where a = g = acceleration due to gravity = 9.8 m/s²

Therefore, we have that:

\begin{gathered} 0=26.2^2-2(9.8)s \\ \Rightarrow19.6s=686.44 \\ s=\frac{686.44}{19.6} \\ s=35.02m \end{gathered}

That is the height that the vase will reach.

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In collision that are categorized as elastic, the total kinetic energy of the system is preserved such that,

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The kinetic energy of the system before the collision is solved below.

  KE1 = (0.5)(25)(20)² + (0.5)(10g)(15)²
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This value should also be equal to KE2, which can be calculated using the conditions after the collision.

KE2 = 6125 g cm²/s² = (0.5)(10)(22.1)² + (0.5)(25)(x²)

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Answer:

A.The positive z-direction

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We have to find the direction of electric field at z=a on the positive z-axis if \lambda_1 and \lambda_2 are positive.

The direction of electric field  at z=a on the positive z-axis  is positive z-direction .

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Use the conservation of energy to explain the speeds at different places in the diagram of the roller coaster.
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A force acting on a body causes a change in the momentum of the from 12 kgms-1 to 16 kgms-1 in 0.2 s. calculate the magnitude of
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Answer: Impulse = 4 kgm/s

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According to second law of motion,

Force F = change in momentum ÷ time

That is

F = (P2 - P1)/t

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ss7ja [257]

To solve this problem it is necessary to apply the concepts related to intensity as a function of power and area.

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