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Troyanec [42]
3 years ago
10

Which of the following is a list of

Physics
1 answer:
KonstantinChe [14]3 years ago
4 0

Answer:

c. metallic, sub metallic, or nonmetallic

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A pitcher exerts 100.0 N of force on a ball with a power output of 4,500 W. What is the velocity of the ball? 0.02 m/s, 45 m/s,
OverLord2011 [107]
Power is defined as the amount of work over a certain amount of time. Work is also Force times the distance traveled. Simplifying the expression makes it Power=Force x Velocity. Since we are given that the power is 4500 W and the force is 100 N, dividing the Power by force gives 45 m/s, which is the velocity of the ball.
6 0
3 years ago
A sample of oxygen gas at 25.0°c has its pressure tripled while its volume is halved. What is the final temperature of the gas?
Marat540 [252]

Answer:

447 K

Explanation:

25 C = 25 + 273 = 298 K

Assuming ideal gas, we can apply the ideal gas law

\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}

T_2 = T_1\frac{P_2}{P_1}\frac{V_2}{V_1}

Since pressure is tripled, then P_2 / P_1 = 3. Volume is halved, then V_2 / V_1 = 0.5

T_2 = 298*3*0.5 = 447 K

4 0
3 years ago
Read 2 more answers
An unusual fog that is denser than air begins to fill a room should the people in the room walk out or crawl out
11111nata11111 [884]
Walk out, because dense air sinks, cool air rises, so you should have enough air to breathe while walking out, better off, is to hold onto your breath and run out, or put something over your nose and mouth, whichever you use to breathe with, like a mask of some type of cloth. don't forget to stop, duck, and roll if the fires on you.
3 0
3 years ago
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A 1.20 m wire has a mass of 6.80 g and is under a tension of 120 N. The wire is held rigidly at both ends and set into oscillati
swat32

Answer:

145.52137 m/s

1.4 m

0.7 m

60.6339 Hz

121.2678 Hz

Explanation:

T = Tension = 120 N

\mu = Linear density  = \frac{m}{L}

m = Mass of wire = 6.8 g

L = Length of wire = 1.2 m

n = Number of loops

Velocity is given by

v=\sqrt{\frac{T}{\mu}}\\\Rightarrow v=\sqrt{\frac{T}{\frac{m}{L}}}\\\Rightarrow v=\sqrt{\frac{120}{\frac{6.8\times 10^{-3}}{1.2}}}\\\Rightarrow v=145.52137\ m/s

The speed of waves on the wire is 145.52137 m/s

Wavelength is given by

\lambda=\frac{2L}{n}\\\Rightarrow \lambda=\frac{2\times 1.2}{1}\\\Rightarrow \lambda=1.4\ m

The wavelength of the waves that produces one-loop standing waves is 1.4 m

\lambda=\frac{2L}{n}\\\Rightarrow \lambda=\frac{2\times 1.2}{2}\\\Rightarrow \lambda=0.7\ m

The wavelength of the waves that produces two-loop standing waves is 0.7 m

Frequency is given by

f=\frac{nv}{2L}\\\Rightarrow f=\frac{1\times 145.52137}{2\times 1.2}\\\Rightarrow f=60.6339\ Hz

The frequency of the waves that produces one-loop standing waves is 60.6339 Hz

f=\frac{nv}{2L}\\\Rightarrow f=\frac{2\times 145.52137}{2\times 1.2}\\\Rightarrow f=121.2678\ Hz

The frequency of the waves that produces two-loop standing waves is 121.2678 Hz

4 0
3 years ago
The charge of a single electron
vlabodo [156]
B. Electrons are negative so one single 1 would be negative 1
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3 years ago
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