An infinite number of springs with spring constant k, 2k, 4k, 8k,16k…… respectively are connected in series. What is the equivalent spring constant?

Q: Choose the BEST answer to the following. When energy is released by the process of fusion, the total...

A: Nuclear fission is a process in which two lighter nuclei combine to form single heavier nuclei.The m...

Q: Three vessels of equal capacity have gases at the same temperature and pressure. The first vessel co...

A:

Q: Choose the BEST answer to the following. If an iron nucleus split in two, its fission fragments woul...

A: Iron has a most stable nucleus in the present elements; therefore, for the fission reaction of iron,...

Q: A bat is flitting about in a cave, navigating via ultrasonic beeps. Assume that the sound emission f...

A: Given,Frequency = 120 kHzSpeed of sound in air = 340 m/sVelocity of bat = 0.09 X Speed of sound in a...

Q: Choose the BEST answer to the following. Which of these three elements has the most mass (a) Hydroge...

A: The mass per nucleon for all the three elements is being evaluated for all the three elements as des...

Q: What amount of heat must be supplied to 2.0 × 10-2 kg of nitrogen (at roomtemperature) to raise its ...

A: The expression for amount of heat is,

Q: Choose the BEST answer to the following. Which of these can NOT be deflected by electrical or magnet...

A: Alpha rays and Beta rays are the rays that have charge; thus, they are deflected by electrical or ma...

Q: Choose the BEST answer to the following: The greenish blue of ocean water mostly involves light that...

A: Answer: ai,e Absorbed.

Q: Explain Doppler's Effect.

A: When the frequency of wave changes in relation to observer who is moving relative to wave source is ...

Q: An ice cube is given a small displacement from the bottom of the spherical bowl of 10cm radius . Ass...

A: An ice cube is given a small displacement from the bottom of the spherical bowl of radius r is simil...

Q: What test can you perform to increase the chance in your own mind that you are right about a particu...

A: The test, which is performed to determine the own opinion right, is to find the counter part of the ...

Q: Choose the BEST answer to the following: In a circuit of two lamps in parallel, if the current in on...

A: Given that the two lamps are parallel and the current in one lamp is 2A.

Q: Why temperature of hand increases when we rub it against each other?

A: Reason : When you rub your hands together, the action of scraping the surface of your skin back and ...

Q: Two towns A and B are connected by a regular bus service with a bus leaving in either direction ever...

A: Assume the speed of the bus to be v. The relative speed of the bus when the cyclist and the bus move...

Q: State relation between frequency of wave and angular frequency.

A:

Q: Choose the BEST answer to the following: The difference between dc and ac in electrical circuits is ...

A: Answer: ai,e steadily in one direction.

Q: Choose the BEST answer to the following: In his special theory of relativity, Einstein stated that t...

A: The Einstein’s special theory of relativity determined the law of physics is same for all inertial o...

Q: A rocket is moving at a speed of 200 m s-1 towards a stationary target. While moving, it emits a wav...

A: (1)Let vs be the speed of the moving rocket, f be the frequency of rocket, v be the speed of sound i...

Q: Explain clearly, with examples, the distinction between :(a) magnitude of displacement (sometimes ca...

A: Example 1: 

Q: Choose the BEST answer to the following: If you were to travel at a speed close to that of the speed...

A: As per The Principle of Special Theory of Relativity; the laws of physics are the same in each refer...

Q: Choose the BEST answer to the following: If you change the magnetic field in a closed loop of wire, ...

A: Answer: ai,e Current

Q: What are nodes and antinodes of waves?

A: One feature of each standing wave pattern is that there are points that tend to stand still along th...

Q: How will the period of a simple pendulum change when its length is doubled?

A: The time period of the simple pendulum is

Q: A boy standing on a stationary lift (open from above) throws a ball upwards with maximum initial spe...

A: Let t be the time taken by the ball to reach the maximum height. The time taken by the ball to retur...

Q: Romeo is throwing pebbles gently up to Juliet's window, and he wants the pebbles to hit the window w...

A:

Q: Define average speed and average velocity.

A: As we know, that the speed is rate of change of distance travelled by an object and velocity is rate...

Q: A hospital uses an ultrasonic scanner to locate tumours in a tissue. What is the wavelength of sound...

A: Given:Speed of sound = 1.7 km/sFrequency = 4.2 MHz

Q: A man with wrist watch on his hand falls from the top of a tower. Does the watch give correct time d...

A: The free fall has no dependence with the time shown in the wrist watch. The expression for the time ...

Q: Difference between longitude and latitude.

A: Latitude and longitude are used together to specify the geographical coordinates of a location on th...

Q: Choose the BEST answer to the following: Shock waves are produced by waves of sound (a) overlapping ...

A: In Doppler effect the speed of source is smaller than the speed waves it produces. But if the source...

Q: Choose the BEST answer to the following: A wave transfers (a) amplitude. (b) wavelength. (c) frequen...

A: All types of waves like sound waves can be considered as mechanical waves. If there is an energy sou...

Q: A man walks on a straight road from his home to a market 5 km away with a speed of 10 km/h. Finding ...

A: GivenThe distance between the home and market (d) = 5 kThe velocity at which the person travelled fr...

Q: An electric dipole consisting of charges of magnitude 2.50 nC separated by 7.80 μm is in an electric...

A: (a) The magnitude of the electric dipole moment is

Q: If a mass is hanging from a vertical spring is above the equilibrium point, which way does the net f...

A: As when a particle is oscillating, the direction of net force on the particle is always apposite to ...

Q: Choose the BEST answer to the following: The potential energy of a compressed spring and the potenti...

A: The potential energy of a compressed spring and the potential energy of a charged object both depend...

Q: Choose the BEST answer to the following: A wave transfers (a) amplitude. (b) wavelength. (c) frequen...

A: A wave is defined as a disturbance from an equilibrium position associated with a physical quantity ...

Q: In daily life, people are often praised for maintaining some particular point of view, for the “cour...

A: In daily life we come across many people who individual ideas and interceptions  which are based on ...

Q: Will a pendulum clock gain or lose time when taken to the top of mountain?

A: Time period can be calculated as:

Q: Choose the BEST answer to the following. When food is exposed to gamma radiation, the food (a) becom...

A: Answer: bi,e doesn’t become radioactive.

Q: Can you please provide in depth work, and make it clear what the answer is. Can you solve every sing...

A: Problem 3.6:Part CThe vectors difference between A and B is,The magnitude of the above two vectors i...

Q: The amplitude of a simple harmonic oscillator is doubled, How does it affect the total energy?

A: Relation between the total energy and amplitude is given as:

Q: Choose the BEST answer to the following. A certain element emits 1 alpha particle, and its products ...

A: An alpha decay of 2He4 changes both the atomic mass and atomic number of the resulting element reduc...

Q: What is power? Give expression of power related to energy and time.

A: While doing some work , there will be a conversion or transferring of energy. Thus, power depends ma...

Q: Hello, can you help me with all the parts in this question, there are 4 total parts attached as 2 sc...

A: a)The required time to reach maximum height is,      

Q: Choose the BEST answer to the following: The phenomenon of beats is the result of sound (a) destruct...

A: Beats is a pattern formed due to two sound waves with the same amplitude and slightly different freq...

Q: Choose the BEST answer to the following: The complementary color of blue is (a) magenta. (b) yellow....

A: Answer: bi,e Yellow.

Q: Choose the BEST answer to the following: A wave transfers (a) amplitude. (b) wavelength. (c) frequen...

A: Consider a wave. The particles at a point gains energy upon vibration, say there is energy source at...

Q: A particle executes SHM of period 12s. Two seconds after it passes through the centre of oscillation...

A: The general expression for SHM is given by

Q: What are satellites?

A: A satellite is an object in space that orbits or circles around a bigger object.

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.