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Gre4nikov [31]
3 years ago
7

What will a spring scale read for the weight of a 57.0-kg woman in an elevator that moves upward with constant speed of 5.0 m/s

?
Physics
1 answer:
Tanzania [10]3 years ago
4 0
The spring scale will read 559 Newton's or 125.7 pounds.
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If the pressure of a gas sample is quadrupled and the absolute temperature is doubled. True or False
Vanyuwa [196]

The given statement"If the pressure of a gas sample is quadrupled and the absolute temperature is doubled" is false.

Answer: Option B

<u>Explanation:</u>

As we know the direct relationship between Pressure and Temperature by the Gay-Lussac’s Law,

                     P_{1} T_{1}=P_{2} T_{2}

From this, we get,

                     \frac{P_{1}}{T_{2}}=\frac{P_{2}}{T_{1}}

                     T_{2}=\frac{P_{1} T_{1}}{P_{2}}

So, according to given statement, we have P_{2} = 4 P_{1}

Then from the above expression, we can find out the value of T_{2} when pressure increased by 4 times of initial pressure as,

                     T_{2}=\frac{P_{1} T_{1}}{4 P_{1}}

Hence, we get,

                      T_{1}=4 T_{2}

Hence, from the above expression we can say that as we increase the pressure four times, the temperature does not get doubled. So, the given statement in the question is false.

6 0
4 years ago
Skater 1 has a mass of 45 kg and is at rest. Skater 2 has a mass of 50 kg and is moving slowly at a constant velocity of 3.2 m/s
algol13

Answer:

None

Explanation:

Force, F is given by ma where m is the mass of an object and a is acceleration

Acceleration is the rate of change in velocity per unit time. Since skaters with mass of 75 kg and 50 kg are moving at a constant speed, there is no acceleration hence F=50*0=0 and F=75*0=0

For skater of 45 kg, he is at rest to mean the initial and final velocitu of the skater is zero hence no acceleration, the force will be 45*0=0

Therefore, none of the skaters will experience a greater net force.

3 0
3 years ago
You are doing an experiment to determine how many passengers would fit into a full-sized plane. If a scale model plane has space
romanna [79]
The real place should theoretically have space for 87 passengers if it is an exact model and doesn't have modifications in the seat numbers.
5 0
4 years ago
Read 2 more answers
I need help on 4 and 5 please
Ivan

Answer:

c

Explanation:

6 0
3 years ago
Which approach would be the most interested in studying Phineas Gage
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Biological because its studies the function of the brain’s lobes
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