PHYSICS HIGH SCHOOL

How did some U.S. citizens oppose the Vietnam war?Many left the U.S. for Europe.
Many expressed opposition through protest marches.
Many sent supplies to the South Vietnamese.

Answers

Answer 1
Answer: They protested by marching in the streets.
Answer 2
Answer:

Answer:

Many expressed opposition through protest marches.

is the answerd.

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At what time of day would you be most likely to find that the air over water is significantly warmer than the air over land nearby?
The potential difference between two points, A and B, in an electric field is 2.00 volts. The energy required to move a charge of 8x10^-19 coulomb from point A to point B is
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If a crate weighing 350. N is at rest on an inclined plane whose angle provides the crate with 150. N of normal force, at what angle to the horizontal would the ramp be?

Answers

Answer: 25.37\°

Explanation:

If we draw a free body diagram of the crate we will have the following related to the net force in the y-axis:

N- W sin \theta=0(1)

Hence:

N=W sin \theta(2)

Where:

N=150 N is the normal force

W=350 N is the weight of the crate

\theta is the angle of the inclined plane where the crate is

Findind \theta:

\theta=sin^(-1) ((N)/(W))(3)

\theta=sin^(-1) ((150 N)/(350 N))(4)

Finally:

\theta=25.37\°

When a star is in the main-sequence stage of its life, it is fusing __________ into ________

Answers

hydrogen into helium

A skier starting from rest accelerates in a straight line down a 43,000 m slope at 1 m/s. How fast were they moving after 5 s?

Answers

Answer:

5m/s

Explanation:

The skier accelerates at 1 m/s, then, the acceleration is:

a=1(m)/(s^2)

to find the speed after 5 seconds you use the following formula:

a=(v-v_o)/(t)

but vo = 0m/s because the skier is at rest at the beginning.

You do v the subject of the formula:

v=at=(1(m)/(s^2))(5s)=5(m)/(s)

hence, the velocity is 5m/s

What would happen if a person who is wearing a heavy winter jacket were to place a thermometer inside the jacket next to his or her skin? What would happen if we took the same jacket, after it had been hanging in a closet, and placed a thermometer inside?

Answers

Answer:

Explained.

Explanation:

Let me explain the two cases in by one.

(1) When Person wearing a jacket, heat from his or her body is going to get trapped inside his or her jacket to keep this person warm when a thermometer is placed inside, it would indicate a higher temperature on the scale.

(2) When Jacket is Hanging in a closet, its temperature would be roughly close to room temperature and when we would place a thermometer it would not indicate any change on its scale.

Technician A says that an oxygen sensor can have​ one, two,​ three, four, or more​ wires, depending on the style and design. Technician B says that if the exhaust has little​ oxygen, the voltage of the oxygen sensor will be close to 1 volt​ (1000 mV) and close to zero if there is high oxygen content in the exhaust. Who is​ right?

Answers

Answer:

Both technicians A and B are right.

Explanation:

-The most common application is to measure the exhaust-gas concentration of oxygen.The probe typically has four wires attached to it: two for the lambda output, and two. The number of wires depends on design and style.

-An oxygen sensor will typically generate up to about 0.9 volts(\approx 1.0V) when the fuel mixture is rich and there is little unburned oxygen in the exhaust. When the mixture is lean, the sensor's output voltage will drop down to about 0.1( \approx 0.0V)volts

A water wave has a frequency of 2 HZ and a wavelength of 5 meters what is its speed

Answers

Speed, v = fλ.

Where f is the frequency in Hertz, wavelength is in meters.

Speed, v = 2*5 = 10

Speed = 10 m/s. 
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