PHYSICS HIGH SCHOOL

In the series circuit below the power source is a 9-volt battery and three resistors are R1 = 7 ohm, R2 = 9 ohm and R3 = 2 ohm. What is the total resistance in the series circuit? R1 7 ohm + R2 9 ohm + R3 2 ohm = 18
Is this correct?

Answers

Answer 1
Answer: Yes indeed. You're on your way. In a series circuit, the total resistance is the sum of the individuals no matter what order they're in. Now, if the question goes on to ask what is the current in the circuit, that will be the source voltage divided by the total resistance that you have calculated.

Related Questions

A particle is moving along the x-axis so that its position at any time t is greater than and equal to 0 is given by x(t)=2te^-t?A) Find v(t). B) Find a(t).C) At t=0, is the particle slowing down or speeding up? Explain. D) At what time(s), if any, does the particle change directions? Justify your answer. Any help would be GREATLY appreciated! Thank you!!!
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A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 × 10³ kilograms. What is the amount of mechanical work done by the vehicle?

Sound waves travel faster in: a. solids as compared to liquids. b. liquids as compared to gases. c. warm air as compared to cooler air. d. All of the above are correct.

Answers

Answer:

d all of the above are correct

The Sun's energy reaches the earth by _____. conduction convection radiation fusion

Answers

When heat or any other kind of energy move from one place
to another, conduction and convection need some material stuff
along the way, otherwise they don't happen. 

There is no material stuff between the Sun and the Earth, so
the Sun's energy reaches us by radiation.

The Sun's energy reaches the earth by Radiation

Further explanation

Heat is the energy transfer of an object with the environment or other objects because of the temperature difference between the two.

Heat moves from high-temperature objects to low-temperature objects

The process of heat transfer has 3 types

  • 1. Conduction, which is the transfer of energy that requires an intermediate medium and without the transfer of particles
  • 2. Convection is the transfer of energy due to the movement of the particles
  • 3. Radiation is the transfer of energy without an intermediate medium / through vacuum

Energy from sun to earth through its atmosphere is not through conduction because the atmosphere is a bad conductor. Whereas convection is not possible because the earth must be heated first. And conduction and convection cannot pass through vacuum

Heat transfer from the sun occurs because its energy is carried in the form of electromagnetic waves

Learn more

the type of heat transfer takes place when the furnace is up to an entire room

brainly.com/question/9349086

Convection is a mode of heat transfer

brainly.com/question/1564011

the sun transmits heat to Earth only by radiation

brainly.com/question/1528657

the process of convection

brainly.com/question/377220

Keywords : heat, radiation, convection, conduction, sun

An arrow is fired horizontally at a target that is 40 m away (horizontal d). The arrow drops 0.5 m before striking the target. With what velocity is the arrow fired (what is the horizontal vi)?

Answers

Answer:

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Explanation:

A pillow is thrown downward with an initial speed of 6 m/s.After 4 seconds, the pillow's velocity is m/s. (g= -9.8m/s2)

Answers

The velocity of the pillow after 4 seconds is -45.2 m/sec and this can be determined by using the velocity formula.

Given :

A pillow is thrown downward with an initial speed of 6 m/s.

The equation of velocity is used in order to determine the pillow's velocity after 4 seconds.

v = u + at

where 'v' is the final velocity, 'a' is the acceleration due to gravity, 'u' is the initial velocity, and 't' is the time.

Now, substitute the known terms in the above equation in order to determine the pillow's velocity after 4 seconds.

v = -6 - 9.8 * (4)

Simplify the above equation.

v = -6 - 39.2

v = -45.2 m/sec

So, the velocity of the pillow after 4 seconds is -45.2 m/sec.

For more information, refer to the link given below:

brainly.com/question/13639113

Given :

Initial velocity, u = -6 m/s.

Time taken, t = 4 seconds.

Acceleration due to gravity, g = -9.8\ m/s^2.( Here negative sign means downward direction )

To Find :

Velocity after 4 seconds.

Solution :

By equation of motion.

v = u + at

Here , a = g.

v = u + gt

v = -6 + (-9.8)×4

v = -6 + (-39.2)

v = -45.2 m/s

Therefore, velocity after 4 seconds is -45.2 m/s.

Hence, this is the required solution.

What is the average speed of a car that traveled 300.0 miles in 5.5 hours?

Answers

The average speed of will be "0.41 m/s".

Speed and Distance:

According to the question,

Distance = 300.0 miles

Time = 5.5 hours

We know,

300.0 miles = 482803 meters

Now,

By converting 5.5 hours into seconds, we get

= 5.5* (60)/(1)* (3600)/(1)

= 1,188,000

hence,

The speed will be:

= (482803)/(1188000)

= 0.406 or, 0.41 \ m/s

Thus the above answer is right.

Find out more information about speed here:

brainly.com/question/4931057  

Answer:

54.54 miles per hour

Explanation:

You do 300 divided by 5.50 to get 54.545454 but you can estimate it to be about 54.54 miles per hour.

So, top average speed of car was 54.54 mph.

What does the atomic number of an element represent? Question 21 options: A. the number of protons in an atom B. the number of neutrons in an atom the mass of an atom C. the total number of protons, neutrons, and electrons in an atom D. the order in which the element was discovered

Answers

Answer:

A. the number of protons in an atom

Explanation:

The atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom.

Answer:

A. the number of protons in an atom

Explanation:
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