ZuoTi.Pro
Question

I need the answers to these eight questions. They are attached below. Please answer all of them. Thank you so much!

A metal sphere has a charge of-6 μC. How many excess electrons are there on the sphere? О 4х10 10х1013 ) 4х1013 10х10-13

A metallic surface emits electrons when it is irradiated with a yellow light source of power 25 Watts. What happens to the emission of the electrons if one yellow light source is replaced by two violet light sources of same power? O The number of emission of electrons will increase but the maximum velocity remains the same. The number of emission of electrons will decrease but the maximum velocity remains the same. Both the number of emission of electrons and the maximum velocity will decrease O Both the number of emission of electrons and the maximum velocity will increase.

Which of the following statements about emission spectra is correct? O All the lines are evenly spaced. O All noble gases have the same spectra. O Each line corresponds to a series of wavelengths. All the lines result from discrete energy differences.

In which of the following situations will Doppler Effect not be observed? O An ambulance rushes toward the stationary observer with its siren blaring O The observer rushes toward the stationary ambulance when its siren is blaring O The ambulance moves at a high speed with its siren blaring and the observer is seated inside O The ambulance rushes away from the stationary observer with its siren blaring.

Which of the following is correct for the two coherent light waves to produce zero light? The light waves should travel in perpendicular directions. The light waves are in phase with each other. The light waves are out of phase with each other. The light waves should pass through a prism.

What is the equivalent resistance for the resistors shown in the figure? 2Ω 2Ω 2Ω 2Ω 0.5 Ω 1.5 Ω 200 O 8.0Ω

When a light passes from glass to air, which of the following is correct for the path of the light? The path of the light is bent toward the normal. O The path of the light is bent away from the normal. O The path of the light is parallel to the normal O The path of the light is straight without any bends. เน้

The time measured by an astronaut in the space craft to reach star B from star A is 2 years. Which of the following is correct for the time measured by an observer on the Earths station? O 1 year O 2 years O less than 2 years more than 2 years

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

1. 4x10^13

2. both the number of electron and max velocity increases

3. each line corresponds to a series of wavelength .

4. observer is seated inside .

5. the light waves are out of phase with each other

6. 6x2/(6+2) = 1.5 ohm

7. bent away from normal

8. more than 2 years

0 0
Add a comment
Know the answer?
Add Answer to:
I need the answers to these eight questions. They are attached below. Please answer all of...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • I need the answers to these ten questions. I have attached them below. Please answer all...

    I need the answers to these ten questions. I have attached them below. Please answer all of them. Thank you so much in advance! If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? O The length of the rod will become exactly half of its original value. O The length of the rod remains the same. The length of the rod...

  • I need the answers to these nine questions. They are attached below. Please answer all of...

    I need the answers to these nine questions. They are attached below. Please answer all of them. Thank you so much in advance! Which of the following is the correct statement? ● A photon of yellow light has more energy than a photon of ultraviolet light. O A photon of yellow light has less energy than a photon of ultraviolet light. O A photon of yellow light has less energy than a photon of red light. O A photon of...

  • I need the answers to these seven questions. I have attached them below. Please answer all...

    I need the answers to these seven questions. I have attached them below. Please answer all of them. Thank you so much!!! What happens to the energy of the photon if the frequency of the photon is doubled? O Energy of the photon remains the same. O Energy of the photon is increased two times, Energy of the photon is decreased two times. O Energy of the photon is increased four times Which of the following equations is used to...

  • I need the answers to these ten questions. They are attached below. Please answer all of...

    I need the answers to these ten questions. They are attached below. Please answer all of them. Thank you so so much!!!! Which of the following situations is not true for magnets? Like poles repel each other. O Unlike poles repel each other North poles repel each other. A north pole and a south pole will attract each other. Which circle has minimum flux in the following figure? O circle P O circle Q O circle R circle S One...

  • I need help with all 4 1) 1) A plane wave is projected towards a small...

    I need help with all 4 1) 1) A plane wave is projected towards a small opening in a wall and spreads out once it passes the opening. Rank in order the amount of diffraction of each wave below from most spreading to least spreading. A) Most>Ocean wave, Sound wave, Blue light, Red light+Least. B) Most Red light, Blue Light, Ocean wave, Sound wave Least. C) Most →Blue light, Red Light, Sound Wave, Ocean wavefLeast. D) Most Sound wave, Ocean...

  • I need the answers to these two physics questions. They are attached below. Thank you so...

    I need the answers to these two physics questions. They are attached below. Thank you so much! Which of the following is correct for the back emf in a motor? O The net emf across the motor is the sum of the back emf and the applied emf. O The net emf across the motor is the difference between applied emf and the back emf o Back emf decreases as the coil in the motor rotates faster. O Increase of...

  • i need the answers to all 10 questions please principal quantum number, angular momentum quantum number,...

    i need the answers to all 10 questions please principal quantum number, angular momentum quantum number, magnetic (1) The shape of an electron orbit is determined by: quantum number, or electron spin quantum number. (2) For the sad shell, the number of possible orbits is: n =5 50 n=1 n2 n: 3 z 9 19 Questions 2. 6, 8, 9, 12, 18 (3) For the so shell, the maximum number of electrons is: 2, 6, 8, 9, 12, 118 [4]...

  • Please answer ALL of the questions below! They are all on the same page and related!...

    Please answer ALL of the questions below! They are all on the same page and related! I will rate the answer immediately after getting the answer! Thank you! 7 In the reaction, 6CO2 + 6H20 --C6H12O6 + 602, carbon dioxide is being — oxidized Ophosphorylated hydrolyzed reduced condensed Which portion of the photosynthetic apparatus absorbs light? O NADP reductase O photosystem 1 both photosystem I and NADP reductase O photosystem II both photosystem I and photosystem II The image here...

  • 1. Please answer the following questions regarding coherent lights: A. B. C. What makes two light...

    1. Please answer the following questions regarding coherent lights: A. B. C. What makes two light sources coherent? the same frequency the same frequency, and maintaining a constant phase difference the same amplitude, and maintaining a constant phase difference the same frequency and amplitude Monochromatic coherent light shines through a pair of slits. If the wavelength of the light is decreased, which of the following statements is true of the resulting interference pattern? The distance between the maxima stays the...

  • I need the answers to these ten questions. I have attached them below. Please answer them...

    I need the answers to these ten questions. I have attached them below. Please answer them all. Many many thanks in advance!! When a torch is brought 2 times closer, how many times brighter will it appear? O 16 A diffraction grating that contains 650472 lines/m is illuminated by monochromatic light (λ-632.8 nm) from a helium-neon laser directed perpendicular to the surface of the grating. What is the angle for the second order maxima to occur? 24° O 45 48...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT