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3 years ago

5

(r2) = 5.4 cm on the projectile motion gives a corresponding velocity (cm/s) of????

1 answer:

blagie [28]3 years ago

8 0

Answer:

<h2>B.</h2>

Explanation:

<h2 />

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3 years ago

Read 2 more answers

Two balls of equal mass at the bottom of an incline are rolled upward without slipping at the same initial velocity. one ball is

german

The appropriate response would be the hollow ball.The purpose for it has more kinetic energy at the last (2/3 as opposed to 2/5) so it will have more potential energy (more height) at the best. Pondering it, more inertia implies its less impervious to change meaning the hollow ball with more inertia wont need to stop as fast.

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4 years ago

On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window. Suppose the air outs

user100 [1]

Answer:

A) $\Delta P = 14512.5 Pa = 14.512 kPa$

B) F = 1632.65 N

Explanation:

Given details

outside air speed is given as $v_2 = 150 m/s$

since inside air is atmospheric , $v_1 = 0 m/s$

a) By using bernoulli equation between outside and inside of flight

$P_1 + \frac{1}{2} \rho v_1^2 + \rho gh = P_2 + \frac{1}{2} \rho v_2^2 + \rho gh$

$\Delta P = \frac{1}{2} \rho v_2^2 - \frac{1}{2} \rho v_1^2$

$\Delta P = \frac{1}{2} \rho[ v_2^2 -v_1^2]$

$\Delta P = \frac{1}{2} 1.29 [ 150^2 - 0^2]$

$\Delta P = 14512.5 Pa = 14.512 kPa$

b) force exerted on window

Area of window $= 25\times 45 = 1125 cm^2 = 0.1125 m^2$

We know that force is given as

$F = P\times A$

$F = 14512.5 \times 0.1125$

F = 1632.65 N

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4 years ago

Can someone please put these vocab terms in the right boxes

umka2103 [35]

Conduction:

The handle of a pot becoming too hot to grab as it cooks on the stove.

Grabbing a warm coffee mug to warm your hands.

Putting an ice pack on an injury.

Burning yourself by touching boiling water.

Convection:

An oven that cooks by cycling warm air through the bottom and out the top.

Warm water rising to the surface of the ocean and cooler water sinking.

Cooking popcorn using a microwave.

Radiation:

Heat from a fire warming your hands.

Warm air rising off of the pavement.

Heat from the sun hitting a solar panel.

Hope this helps ☝️☝☝

7 0

4 years ago