3 years ago

A ball being dropped from a building

Physics

1 answer:

Helen [10]3 years ago

5 0

Answer:

Potential energy is transformed into kinetic energy

Explanation:

I think the option b is the correct answer because as the ball is throwed the potential energy is changed into kinetic energy

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In a physics lab, Asha is given a 10.7 kg uniform rectangular plate with edge lengths 67.3 cm by 53.5 cm . Her lab instructor re

Leya [2.2K]

Answer:

$I=2.6363\ kg.m^2$

Explanation:

Given:

dimension of uniform plate, $(0.673\times 0.535)\ m^2$

mass of plate, $m=10.7\ kg$

Now we find the moment of inertia about the center of mass of the rectangular plate is given as:

$I_{cm}=\frac{1}{12} \times m(L^2+B^2)$

where:

$L=$ length of the plate

$B=$ breadth of the plate

$I_{cm}=\frac{1}{12} \times 10.7\times(0.673^2+0.535^2)$

$I_{cm}=0.6591\ kg.m^2$

We know that the center of mass of the rectangular plane is at its geometric center which is parallel to the desired axis XX' .

Now we find the distance between the center of mass and the corner:

$s=\frac{\sqrt{ (0.673^2+0.535^2)}}{2}$

$s=0.4299\ m$

Now using parallel axis theorem:

$I=I_{cm}+m.s^2$

$I=0.6591+10.7\times 0.4299^2$

$I=2.6363\ kg.m^2$

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3 years ago

Which vehicle will have more kinetic energy, a parked<br> semitruck or a car moving at 50 km/h?

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Answer:

a semi truck

Explanation:

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Here is a graph of speed vs time. If the object is moving to the east, which BEST describes the speed and velocity of the graph?

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Answer: A JUST DID IT ON USA TESTPREP

Explanation:

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3 years ago

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Answer:

Aufbau diagram of sodium ion:

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An inclined plane makes work easier by breaking an upward or downward movement into smaller increments. Examples of inclined planes include slides, ramps, and hills. A screw is like an inclined plane wrapped around a cylinder. A screw turns a small rotational force into a larger forward driving force.

Explanation:

hope this helps branlist plz im trying to rank up

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3 years ago