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rewona [7]
4 years ago
9

With each bounce off the floor, a tennis ball loses 23% of its mechanical energy due to friction. When the ball is released from

a height of 2.5 m above the floor, what height will it reach after the third bounce?
110 mm

110 cm

11 cm

150 cm
Physics
1 answer:
aleksley [76]4 years ago
6 0

Answer:

110 cm

Explanation:

Gradpoint

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A satellite of mass 5460 kg orbits the Earth and has a period of 6520 s
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Steam enters a well-insulated nozzle at 200 lbf/in.2 , 500F, with a velocity of 200 ft/s and exits at 60 lbf/in.2 with a velocit
Ede4ka [16]

Answer:

386.2^{\circ}F

Explanation:

We are given that

P_1=200lbf/in^2

P_2=60lbf/in^2

v_1=200ft/s

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Q=0

C_p=1BTU/lb^{\circ}F

We have to find the exit temperature.

By steady energy flow equation

h_1+v^2_1+Q=h_2+v^2_2

C_pT_1+\frac{P^2_1}{25037}+Q=C_pT_2+\frac{P^2_2}{25037}

1BTU/lb=25037ft^2/s^2

Substitute the values

1\times 500+\frac{(200)^2}{25037}+0=1\times T_2+\frac{(1700)^2}{25037}

500+1.598=T_2+115.4

T_2=500+1.598-115.4

T_2=386.2^{\circ}F

7 0
4 years ago
I NEED THIS A SOON AS POSSIBLE
vivado [14]

Work is done when spring is extended or compressed. Elastic potential energy is stored in the spring. Provided inelastic deformation has not happened, the work done is equal to the elastic potential energy stored.

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3 years ago
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Answer:

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As the height above the earth's surface increases, the air molecules decrease.

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