Description : Light waves are different from sound waves in that 1. Light waves are electromagnetic but sound waves are not 2. Light waves can travel through water but sound waves cannot 3. Light travels with the same speed in all media 4. Light ... /are correct? (a) 1 and 5 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4
Last Answer : Ans:(a)
Description : Sound and light waves both _______. (1) have similar wavelength (2) obey the laws of reflection (3) travel as longitudinal waves (4) travel through vacuum
Last Answer : (2) obey the laws of reflection Explanation: The two laws of reflection of light are applicable to sound waves as well. The incident wave, the normal to the reflecting surface and the reflected wave at the point of incidence lie in the same plane.
Description : Longitudinal waves cannot travel through – (1) Vacuum (2) Solid (3) Liquid (4) Gas
Last Answer : (1) Vacuum Explanation: Longitudinal waves cannot travel through vacuum because such wave requires a medium such as solid liquid or air to travel through. They cannot travel through vacuum or in space. ... is in the same direction as, or the opposite direction to, the motion of the wave.
Description : Heat waves (A) Cannot pass through vacuum (B) Travel in straight line (C) Can be reflected by a mirror (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Sound waves do not travel through _______. a) solids b)gases c)liquid d)vacuum
Last Answer : d)vacuum
Description : Longitudinal waves cannot travel through (1) Vacuum (2) Solid (3) Liquid (4) Gas
Last Answer : Vacuum
Description : is it true that All light waves travel at different speeds in different materials?
Last Answer : never mind I figured it out. it is true
Description : What are the type of waves that travel at a different speed through different materials?
Last Answer : Need answer
Description : ____ grippers are used to pick up light weight materials such as paper,cloth etc a.Mechanical grippers b.Adhesive grippers c.Vacuum cup grippers d.Magnetic grippers
Last Answer : b.Adhesive grippers
Description : ____ grippers are used to pick up light weight materials such as paper,cloth etc. (A) Mechanical grippers (B) Adhesive grippers (C) Vacuum cup grippers (D) Magnetic grippers
Last Answer : B
Description : Which of the following does NOT travel in a vacuum? A. Radio waves B. Gamma rays C. Magnetic waves D. Sound waves
Last Answer : D. Sound waves
Description : Which of the following does NOT travel in a vacuum? w) radio waves x) gamma rays y) magnetic waves z) sound waves
Last Answer : ANSWER: Z -- SOUND WAVES
Description : Which waves cannot be transmitted through vacuum - (1) Light (2) Heat (3) Sound (4) Electromagnetic
Last Answer : (3) Sound Explanation: Sound waves cannot be transmitted through vacuum. It is transmitted by the movement of particles along with the direction of the motion of the sound wave. More generally, sound is a mechanical disturbance which is dependent upon a medium to travel.
Description : These waves cannot be trans-mitted through vacuum – (1) Light (2) Sound (3) Heat (4) Electromagnetic
Last Answer : (2) Sound Explanation: Sound is a mechanical wave that is created by vibrating objects and propagated through a medium from one location to another. Because mechanical waves rely on particle interaction ... space that are void of particles. That is, mechanical waves cannot travel through a vacuum.
Description : These waves cannot be transmitted through vacuum (1) Light (2) Sound (3) Heat (4) Electromagnetic
Last Answer : Sound
Description : Q.61. CA Co manufactures a single product and has drawn up the following flexed budget for the year. 60% 70% 80% Rs Rs Rs Direct materials 120,000 140,000 160,000 Direct labour 90,000 105,000 120,000 Production ... activity? (a) Rs 330,300 (b) Rs 370,300 (c) Rs 373,300 (d) Rs 377,300
Last Answer : (b) Rs 370,300
Description : Electromagnetic wave travel at __________ in free space. A. 300,000 km/sec B. 100,000 km/ sec C. 400,000 km/sec D. 200km/sec
Last Answer : A. 300,000 km/sec
Description : Pick out the wrong statement. (A) Heat transfer by radiation cannot occur across an absolute volume (B) In case of a shell and tube heat exchanger, the pressure drop through the shell is ... The amount of heat involved in the condensation or vaporisation of 1 kg of a fluid is the same
Last Answer : (A) Heat transfer by radiation cannot occur across an absolute volume
Description : A belt conveyor used for the transportation of materials can (A) Run upto 1 km (B) Travel at a speed upto 300 metres/minute (C) Handle materials upto 5000 tons/hr (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : How many kilometers can light go in one second ?
Last Answer : One second of light can travel 3 lakh kilometers.
Description : The speed of sound (at sea level) in air is: w) 340 meters per second x) 400 meters per second y) 500 meters per second z) 760 kilometers per second
Last Answer : ANSWER: W -- 340 METERS PER SECOND
Description : How long will it take for p waves to hit a town that is 25 kilometers away?
Last Answer : Feel Free to Answer
Description : 1. There is no net transfer of energy by the particles of the medium in which waves? 2. Jaspal Rana is a distinguished athlete in which game? 3. Which provides the largest part of the ... having the same rainfall called? 20. Which Gupta king is famous for his courageous stand against the Hunas?
Last Answer : Answer : 1. Stationary waves 2. Shooting 3. Corporate businesses 4. 400 km 5. Kanishka 6. Turtle 7. President 8. Smelting 9. Pamir Plateau 10. Ilango 11. Chess 12. One 13. European 14. ... Tamil 16. In Parliament before being accepted 17. Battery 18. Internal borrowings 19. Isohyet 20. Skanda Gupta
Description : A source produces sound waves under water. Waves travel through water and then into air. Which of the following statements about the frequency (f) and the wavelength () is correct and sound passes from ... increases. (3) remains unchanged but f decreases. (4) remains unchanged but f increases.
Last Answer : 3) remains unchanged but f decreases.
Description : A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing ... 10 meters it travels? w) 0 joules x) 1,000 joules y) 10,000 joules z) 100,000 joules
Last Answer : ANSWER: W -- 0 JOULES
Description : Continental shelves range in width from: w) 1,500 to 5,000 kilometers x) 1,500 to 3,000 kilometers y) 0 to 5,000 kilometers z) 0 to 1,500 kilometers
Last Answer : ANSWER: Z -- 0 TO 1,500 KILOMETERS
Description : In the process of radiation, energy is carried by electromagnetic waves. What is the speed of electromagnetic waves? A. 182,000 miles/second B. 184,000 miles/second C. 186,000 miles/second D. 188,000 miles/second
Last Answer : 186,000 miles/second
Description : To the present time, over _____ antibiotic substances have been described and approximately _____ such drugs are available to the medical practitioner. a. 10,000; 100 b. 8,000; 100 c. 6000; 300 d. 4,000; 400
Last Answer : b. 8,000; 100
Description : If it took 5 hours to travel 90 kilometers then at that rate how many kilometers would be traveled in 15 hours?
Description : Why don't they change the size of a meter so that the speed of light is exactly 300,000 km/sec?
Last Answer : I could ask the same about why don’t they change a foot to ten inches and a yard to ten feet, so all I have to do is move a decimal to figure out measurements. I’d like them to make ten ounces in a cup and a pound while they are at it. It is what it is.
Description : Four middle-aged people were reminiscing about their individual journeys through life. Two of them were college grads, and the other two were business people. The first was heard to say, 'When I happened upon ... well as my wasting my money on $5,000 toupees, raccoon coats, and buying a R -Riddles
Last Answer : The four people had just finished playing the board game, LIFE, and were discussing some of the good and bad things they had encountered while playing.
Description : Among the following materials sound travels fastest in – (1) Steel (2) Air (3) Vacuum (4) Water
Last Answer : (1) Steel Explanation: The speed of sound is the distance travelled during a unit of time by a sound wave propagating through an elastic medium. In dry air at 20 °C (68 °F), the speed ... varies from substance to substance. Sound travels faster in liquids and non-porous solids than it does in air.
Description : Which of the listed pairs of materials make the best insulators? A. dry air and a vacuum B. tin and lead C. doped silicon and germanium D. paper and oil
Last Answer : Answer: D
Description : Which of the listed pairs of materials make the best insulators? A. copper and aluminum B. glass and mica C. dry air and a vacuum D. doped silicon and germanium
Last Answer : Answer: B
Description : Among the following materials sound travels fastest in (1) Steel (2) Air (3) Vacuum (4) Water
Last Answer : Steel
Description : Why do you suppose it is that every vacuum bottle or such thermal device I’ve tried inevitably declines in its ability to keep things cold?
Last Answer : Such insulating vessels are designed with a vacuum layer, that prevents heat transfer through conduction. I would postulate that over time, air slowly diffuses into that vacuum chamber, robbing it of its insulating properties.
Description : The speed of light is a. 186,000 mi/h b. 300 mi/h c. 300,000 m/s d. 300,000,000 m/s
Last Answer : d. 300,000,000 m/s
Description : The speed of light is -----? A. 280,000 km/s B. 300,000 km/s (Answer) C. 320,000 km/s D. none of these
Last Answer : B. 300,000 km/s (Answer)
Description : The speed of light is ∙ a. 186,000 mi/h ∙ b. 300 mi/h ∙ c. 300,000 m/s ∙ d. 300,000,000 m/s
Last Answer : ∙ b. 300 mi/h
Description : A client-server system uses a satellite network, with the satellite at a height of 40,000 kms. What is the best-case delay in response to a request? (Note that the speed of light in air is 3,00,000 km/second). (A) 133.33 m sec (B) 266.67 m sec (C) 400.00 m sec (D) 533.33 m sec
Last Answer : (D) 533.33 m sec Explanation: The request has to go up and down, and the response has to go up and down. The total path length traversed is thus 160.000 km. The speed of light in air and vacuum is 300,000 km/sec, so the propagation delay alone is 160,000/300,000 sec or about 533 msec.
Description : Saina spent Rs. 44,668/- on her air tickets, Rs.56,732 on buying gifts to the family members and the remaining 22% of the total amount she had as cash with her. What was the total amount ? a) Rs. 1,25,800/- b) Rs. 1,30,000/- c) Rs. 1,10,500/- d) Rs. 1,68,300/- e) Rs. 1,50,000/-
Last Answer : Saving = 22% Spent = a00 - 22) = 78% Spending money = 44668 + 56732 = 101400 78%- 101400 100% = 101400 100/78 = 130000 Answer: b)
Description : Which statement about sound is true? A. Sound can’t travel through vacuum (Answer) B. Sound can’t travel through glass C. Sound can’t travel through water D. Non of theses
Last Answer : A. Sound can’t travel through vacuum (Answer)
Description : Light travels through air or vacuum at a speed of 3?
Last Answer : :x 108m/s
Description : What is the way to get rid of low back pain ? I do a job of marketing. There are about 3 to 4 kilometers of walking every day. My problem is !!! My back hurts. There is pain from ... tablets. খ Medication is a little healing. In the morning I feel completely healthy. The same situation after noon.
Last Answer : In fact, you walk every day which is more likely to cause pain. But yes, it can also be due to physical weakness and lack of calcium. Complete the dose of the medicine that you have been given. Hope you find the solution.
Description : Here is a map of Evergreen Retreat. Every unit represents one kilometer. What is the distance between the mess hall and cabin 2 in kilometers?
Last Answer : 48
Description : What is the frequency of a wave in which five waves pass a given point every second?
Last Answer : That's 5 per second - or 5 hertz.
Description : In geological studies, all of the following are TRUE of P waves except that they: w) are body waves x) travel like sound waves y) can pass through liquids z) are slower than S waves
Last Answer : ANSWER: Z -- ARE SLOWER THAN S WAVES
Description : Internal costs include a) Developers salaries b) Managers and support personnel salaries c) The cost of overheads such as utilities, rent and senior managers d) Materials (such as manuals) and services such as travel e) All of the above.
Last Answer : a) Developers salaries
Description : If the Earth rotates on its own axis at a speed of 30 kilometers per second, then why does the Earth look fixed from space ?
Last Answer : Earth in its own orbit 29.8km / sec. Keeps moving fast. But when viewed from space, the earth looks fixed. The reason is 29.8km / sec. The speed seems too much to us but it is negligible to the ... earth is 12,667km. . So even if the earth rotates at that speed, it seems to be apparent from space.