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Hatshy [7]
2 years ago
11

A car travels around an oval racetrack at constant speed. The car is accelerating:________.

Physics
1 answer:
bija089 [108]2 years ago
4 0

Answer:

1A,2D,3B

Explanation:

hope this helps

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A propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other. It
zimovet [89]

Answer:

electromagnetic

Explanation:

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2 years ago
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Two satellites revolve around the Earth. Satellite A has mass m and has an orbit of radius r. Satellite B has mass 6m and an orb
melomori [17]

Answer:

aaaaa

Explanation:

M = Mass of the Earth

m = Mass of satellite

r = Radius of satellite

G = Gravitational constant

F=G\frac{Mm}{r^2}

F=G\frac{M6m}{r_b^2}

G\frac{Mm}{r^2}=G\frac{M6m}{r_b^2}\\\Rightarrow \frac{1}{r^2}=\frac{6}{r_b^2}\\\Rightarrow \frac{r_b^2}{r^2}=6\\\Rightarrow \frac{r_b}{r}=\sqrt{6}\\\Rightarrow r_b=2.44948r

r_b=2.44948r

8 0
2 years ago
The following represents a process used to assemble a chair with an upholstered seat. stationsa, b, and c make the seat; station
Mekhanik [1.2K]

There are three questions here:


A. The possible daily output of this process if there is 8 processing time each day?


the time it takes to assemble a chair in seconds = A + B + C + J + K + L + X + Y + Z  

which is equal to = 38 + 34 + 35 + 32 + 30 + 34 + 22 + 18 + 20 =263 per chair



Processing hours = 8 hours x 60 minutes x 60 seconds

= 8 x 60 x 60


= 480 x 60 = 28,800 seconds is available in an 8 hr day.



28,800 / 263 =109.5057034220532


Therefore, It is possible to make 109 chairs in an 8 hour day.



B. Given your output rate in above, what is the efficiency of the process?


The time it takes to assemble a chair in seconds = A+ B + C + J + K + L + X + Y + Z.


= 34 + 34 + 34 + 30 + 30 + 30 + 22 + 18 + 20 = 252.6315789473684 per chair


A total of 252 per chair


Processing hours = 8 hours x 60 minutes x 60 seconds


= 8 x 60 x 60


= 480 x 60 = 28,800 seconds is available in an 8 hour day


= 28,000 / 252 = 114.2857142857143114 chairs


= 109/114 x 100 = 95.6140350877193


Therefore, the efficiency of making the chair is 95.61%


C. What is the flow time of the process?


Flow time is the period that it takes a completed chair to flow through the process from the beginning assemblage step to the last step. Take note that ABC and JKL are parallel legs in the process, and as a result both do not include to flow time to the procedure. In addition, Flow time comprises both pass time and run time at each position in the procedure.

7 0
2 years ago
Evaporation of sweat requires energy and thus take excess heat away from the body. Some of the water that you drink may eventual
kotegsom [21]

Answer:

The amount of heat required is H_t =  1.37 *10^{6} \ J

Explanation:

From the question we are told that

The mass of water is m_w  =  20 \ ounce = 20 * 28.3495 = 5.7 *10^2 g

The temperature of the water before drinking is T_w  =  3.8 ^oC

The temperature of the body is T_b  =  36.6^oC

Generally the amount of heat required to move the water from its former temperature to the body temperature is

H=  m_w  *  c_w * \Delta T

Here c_w is the specific heat of water with value c_w = 4.18 J/g^oC

So

H=   5.7 *10^2 * 4.18 * (36.6 - 3.8)

=> H= 7.8 *10^{4} \  J

Generally the no of mole of sweat present mass of water is

n = \frac{m_w}{Z_s}

Here Z_w is the molar mass of sweat with value

Z_w =  18.015 g/mol

=> n = \frac{5.7 *10^2}{18.015}

=> n = 31.6 \  moles

Generally the heat required to vaporize the number of moles of the sweat is mathematically represented as

H_v  =  n  *  L_v

Here L_v is the latent heat of vaporization with value L_v  = 7 *10^{3} J/mol

=> H_v  =  31.6 * 7 *10^{3}

=> H_v  = 1.29 *10^{6} \  J

Generally the overall amount of heat energy required is

H_t =  H +  H_v

=> H_t =  7.8 *10^{4} +  1.29 *10^{6}

=> H_t =  1.37 *10^{6} \ J

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If it were possible to remove gravity and friction, think about what would happen to a football if it were tossed into the air.
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Ignoring fluid resistance, football will <span>maintain a constant speed until other forces accelerate the football.</span>
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