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tekilochka [14]
3 years ago
7

A vase with a mass of 0.800 kilograms falls from a height of 0.750 meters to a position of 0.500 meters above the floor. Ignorin

g frictional effects, the total mechanical energy at the 0.500 position is _____.
Physics
1 answer:
trapecia [35]3 years ago
6 0

Answer:

E= 2 J

Explanation:

For this case we see how the mechanical energy is generated by the potential energy due to the change of position. We can express that as

E=m*g*h

Being "m" the mass of the object, "g" the value of the acceleration by gravity and "h" the distance traveled in the movement. So

E=m*g*h=0.8Kg*10m/s2*(0.75-0.5)=2J

Done

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. Assume you have a dot grid with 36 dots per sq.in. How many acres are represented by each dot using the following map scales:
elixir [45]

Answer:

a) 0.069 acres

b) 0.114acres

c) 17.78acres

Explanation:

1 dot=1/36sqin

a) 1 sqin= 330×330=108900ft^2

1 dot=108900/36 =3025ft^2

Converting to acre,divide by43560

3025/43560 =0.069acre

b) 1 chain =22 yards

25×22=550yards

Converting to acre divide by 4840

550/4840 =0.114acre

c)1 sqmile =640acres

(1/36) ÷ 640

640/36

17.78acres

4 0
3 years ago
A jet leaves a runway whose bearing is N 3232degrees°E from the control tower. After flying 77 ​miles, the jet turns 90degrees°
OverLord2011 [107]

Answer:

N(80.8^{\circ})E

Explanation:

Bearing from control tower= N(32^{\circ}+\theta})E

But tan \theta=\frac {opposite}{adjacent}

tan \theta=\frac {88}{77}

\theta=tan^{-1}(\frac {88}{77})=tan^{-1}(1.142857143)=48.81407483^{\circ}\approx 48.8^{\circ}

Therefore, the bearing from control tower=N(32^{\circ}+48.8^{\circ}})E

Bearing=N(80.8^{\circ})E

The direction is North East

7 0
3 years ago
The free fall motion shown in the<br>image must be​
tatiyna

Answer:

Kinetic Energy?

Explanation:

3 0
3 years ago
Motion equation of object is
Ganezh [65]

Take the derivative to find the velocity of the object:

v=\dfrac{\mathrm dx}{\mathrm dt}=-12+6t

The object stops when v=0:

-12+6t=0\implies6t=12\implies t=2

so the answer is E.

5 0
3 years ago
Lighting a match changes to :
ale4655 [162]
A, Mechanical and A, Chemical. 
3 0
3 years ago
Read 2 more answers
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