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2 years ago

As a passenger balloon rises, its gas bag tends to A. Become smaller B. Leak C. Distort D. Expand E. Remain unchanged

Physics

2 answers:

andrew11 [14]2 years ago

3 0

Answer:

I think it expands

Explanation:

Serhud [2]2 years ago

3 0

Answer:

E. remain unchanged

Explanation:

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Prove(show) ''T=2π√(l/g)''

Nonamiya [84]

Answer:

Time period for Simple pendulum, $T=2\pi\sqrt{\frac{l}{g}$

Explanation:

The Simple Pendulum

Consider a small bob of mass $m$ is tied to extensible string of length $l$ that is fixed to rigid support. The bob is oscillating in the plane about verticle.

Let $\theta$ is the angle made by string with vertical during oscillation.

Vertical component of the force on bob, $F=-mg\sin\theta$

Negative sign shows that its opposing the motion of bob.

Taking $\theta$ as very small angle then, $\sin\theta\sim\theta$

$F=-mg\theta$

Let $x$ is the displacement made by bob from its mean position ,

then, $\theta=\frac{x}{l}$

so, $F=-mg\frac{x}{l}$ ........(1)

Since, pendulum is in hormonic motion,

as we know, $F=-kx$

where $k$ is the constant and $k=m\omega^{2}$

$F=-m\omega^2x$ .........(2)

From equation (1) and (2)

$-m\omega^2x=-mg\frac{x}{l}$

$\omega=\sqrt{\frac{g}{l}}$

Since, $\omega=\frac{2\pi}{T}$

$\frac{2\pi}{T}=\sqrt{\frac{g}{l}$

$T=2\pi\sqrt{\frac{l}{g}}$

6 0

3 years ago

Find the velocity of a baseball thrown 78 m from third base to first base in 30 sec

ankoles [38]

Answer:

V=2.6m/s

Explanation:

velocity=Distance/time

V=78/30=2.6m/s

3 0

2 years ago

in a tall building, a certain window is 500 meters above the ground.A tennis ball is catapulted horizontally out of the window w

expeople1 [14]

The tennis ball lands at a point 40.4 m from the base of the building.

The tennis ball is projected with a horizontal velocity u from a window, which is at a height y from the ground. The ball lands at a distance x from the base of the building. Let the ball take a time t to reach the ground. In the time t ,the ball falls a vertical distance y and also travel a horizontal distance x.

The initial vertical velocity of the ball is zero, since the ball is projected in the horizontal direction. The ball falls down under the action of gravitational force.

Thus, use the equation of motion,

$y=\frac{1}{2} gt^2$

rewrite the expression for t and calculate the value of t using 9.81 m/s²for g and 500 m for y.

$t=\sqrt{\frac{2y}{g} } \\ =\sqrt\frac{(2)(500m)}{9.81m/s^2} \\ =10.096 s$

The horizontal distance x is traveled using the constant velocity u since no force acts on the ball in the horizontal direction.

Therefore,

$x=ut$

Substitute 4 m/s for u and 10.096 s for t

$x=ut\\ =(4m/s)(10.096s)\\ =40.384m=40.4 m$

Thus, the ball lands at a point 40.4 m from the base of the building.

6 0

3 years ago

How do you calculate acceleration? acceleration equals distance divided by time. acceleration equals speed multiplied by time. a

expeople1 [14]

Acceleration equals the change in velocity divided by time

4 0

3 years ago

Multiple point perspective is a system of perspective in which __________________ a. there are a number of vanishing points, usu

satela [25.4K]

Multiple point perspective is a system of perspective in which: A. there are a number of vanishing points, usually created by multiple objects.

<h3>What is multiple point perspective?</h3>

Multiple point perspective can be defined as a system of perspective in which each items (objects) has a number of interacting lines with different vanishing points.

This ultimately implies that, a multiple point perspective is a system of perspective which is created with a number of vanishing points, that are usually created by multiple objects.

Read more on multiple point perspective here: brainly.com/question/5398474

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5 0

2 years ago