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3 years ago

In the simulation above, as the projectile travels downward, how does the vertical velocity change?

Physics

2 answers:

Rainbow [258]3 years ago

6 0

Answer:

The vertical velocity increases

Explanation:

The motion of the ball is the motion of a projectile, which consists of two independent motions:

- a horizontal motion, with constant velocity

- a vertical motion, with constant acceleration (g=9.8 m/s^2) directed downward

When the ball is travelling downward, its vertical velocity is directed downward. The acceleration is in the same direction (downward), so the vertical velocity is increasing.

Trava [24]3 years ago

6 0

The vertical velocity increases.

The vertical velocity increases because of acceleration due to gravity. The horizontal velocity neither accelerates nor decelerates.

Hope this helps!!

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The membrane that surrounds a certain type of living cell has a surface area of 5.3 x 10-9 m2 and a thickness of 1.1 x 10-8 m. A

kotykmax [81]

Answer:

$2.1\times 10^{-12} c$

Explanation:

We are given that

Surface area of membrane= $5.3\times 10^{-9} m^2$

Thickness of membrane= $1.1\times 10^{-8} m$

Assume that membrane behave like a parallel plate capacitor.

Dielectric constant=5.9

Potential difference between surfaces=85.9 mV

We have to find the charge resides on the outer surface of membrane.

Capacitance between parallel plate capacitor is given by

$C=\frac{k\epsilon_0 A}{d}$

Substitute the values then we get

Capacitance between parallel plate capacitor= $\frac{5.9\times 8.85\times 10^{-12}\times 5.3\times 10^{-9}}{1.1\times 10^{-8}}$

$C=0.25\times 10^{-12}F$

V= $85.9 mV=85.9\times 10^{-3}$

$Q=CV$

$Q=0.25\times 10^{-12}\times 85.9\times 10^{3}=2.1\times 10^{-12} c$

Hence, the charge resides on the outer surface= $2.1\times 10^{-12} c$

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3 years ago

Read 2 more answers

Use a scientific calculator to perform the operation below.

Viefleur [7K]

Answer:

A. 6.13 x 107

Explanation:

Given the expression

5.92 x 10^7 + 2.11 x 10^6

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2.11 x 10^6 = 2110000

Add both values

59200000 + 2110000

= 61,310,000

Express in standard form

= 6.13 * 10^7

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