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Q: The energy of a simple pendulum is 1J when its length is 2m and amplitude of motion is 3cm . Calcula...

A: Step 1Let k be the spring constant and A be the amplitude, then energy, E of a simple pendulum is gi...

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: A  charge of  +4 µC is placed halfway between a charge of +6 µC and another of +9 µC separated by 16...

A: Step 1It is given that

Q: A stone dropped from top of the tower 300m high splashes into water of a pond near the base of the t...

A: Write the kinematic expression for distance travelled

Q: Choose the BEST answer to the following. When an element ejects an alpha particle, the atomic number...

A: Generally nuclear decay changes the number of protons in the nucleus of an atom and changes the elem...

Q: What class of motion, natural or violent, did Aristotle attribute to motion of the Moon?

A: Answer :Natural Motion

Q: You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shie...

A: Answer: No

Q: A pipe 20 cm long is closed at one end. Which harmonic mode of the pipe is resonantly excited by a 6...

A: Given:Length = 20 cmFrequency = 630 HzSpeed of sound = 440 m/s

Q: Give some examples of periodic motion.

A: Some examples of periodic motion is given belowThe rotation of the earth about it axis.Vibration of ...

Q: An infinite number of springs with spring constant k, 2k, 4k, 8k,16k…… respectively are connected in...

A: When springs are connected in series the equivalent spring constant is obtained by this formula

Q: State Law of equipartition of energy.

A: Law of equipartition of energy: According to this law , for any system in thermal equilibrium ,the t...

Q: Choose the BEST answer to the following. Spectral lines of the elements are (a) chaotic. (b) ordered...

A: When emission happens, higher energy quantum state (excited state) of a particle transitions to a lo...

Q: A pendulum is taken to Moon. Will it go slower or faster in comparison with the Earth?

A: An unmodified pendulum clock will only run about 40 percent as quickly as it would on Earth since th...

Q: What determines natural frequency of a body?

A: The natural frequency is the frequency at which an object tends to vibrate as a result of any hit , ...

Q: An oxygen cylinder of volume 30 litres has an initial gauge pressure of 15 atm and a temperature of ...

A:

Q: Assuming the earth to be a sphere of uniform mass density, how much would a body weigh half way down...

A: The acceleration due to gravity at depth inside the earth surface is given by the relation,

Q: What did Galileo discover about moving bodies and force in his experiments with inclined planes?

A: Galileo did most of his experiments about free fall with inclined planes he came to the following co...

Q: Choose the BEST answer to the following: The color of light most intense in the solar radiation curv...

A: Solar radiation is electromagnetic radiation ranging from about 0.25 to 0.45 micro meters in wavelen...

Q: In a sound wave, a displacement node is a pressure antinode and vice-versa. Explain.

A:

Q: Choose the BEST answer to the following: When the shadow of the Moon falls on Earth, we have a (a) l...

A: An eclipse is happening when the shadow of an object falls on another object, if the shadow of the E...

Q: Choose the BEST answer to the following: All parts of a laser beam have the same (a) frequency. (b) ...

A:

Q: A steel rod 150cm long is clamped at its middle. The fundamental frequency of longitudinal vibration...

A: Given information:The fundamental frequency of the steel rod (f) = 2.73 kHzThe length of the steel r...

Q: Explain referigerators and heat pumps.

A: Refrigerator:The process of removing heat from bodies colder than their surroundings is called Refri...

Q: Choose the BEST answer to the following: A 10-Ω resistor carries 10 A. The voltage across the resist...

A: Ohm’s law is given by,

Q: What is the time period and length of a second pendulum on Moon?

A: The expression for the time period of the pendulum is

Q: Choose the BEST answer to the following: The energy of an emitted photon is related to its (a) ampli...

A: An atom emits a photon of light when an electron jumps from a high-energy level to a low energy leve...

Q: Two bodies of masses 1,4,9, 16kg are oscillating in turn on springs of force constant 100N/m. Deduce...

A: Given:Mass (m1) = 1 kgMass (m2) = 4 kgMass (m3) = 9 kgMass (m4) = 16 kgForce constant of spring (k) ...

Q: Choose the BEST answer to the following: At very high speeds, an object appears to an observer at re...

A: The observation given in the question is based on length contraction and Doppler Effect when the sou...

Q: Show that for small oscillations , the motion of a simple pendulum is simple harmonic. Derive an exp...

A: figure shows the motion of a simple pendulum.

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: A mass of 2kg is attached to a spring of spring constant 50N/m. The block is pulled to a distance of...

A: The angular frequency of the motion is

Q: Which of the following are scientific hypotheses? (a) Chlorophyll makes grass green. (b) Earth rotat...

A: A hypothesis:A hypothesis is a limited explanation about an observation that can be tested for some ...

Q: Choose the BEST answer to the following: Electricity and magnetism connect to form (a) mass. (b) ene...

A: Magnetism is a result of moving charges and there is an electric field related to every charge.

Q: Estimate the fraction of molecular volume to the actual volume occupied by oxygen gas at STP. Take t...

A: Diameter of oxygen molecule = 5 ARadius of molecule = 2.5 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: What is the test for whether a hypothesis is scientific or not?

A: Scientific fact:In science, a fact is an observation that has been confirmed so many times that scie...

Q: Choose the BEST answer to the following. The equation that most underlies energy release in nuclear ...

A: The equation in option (a) gives the energy of a photon.

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: Choose the BEST answer to the following: The electric field inside the dome of a Van de Graaff gener...

A: The electrons inside the dome repel each other and they reach the domes outer sphere. This way the i...

Q: Choose the BEST answer to the following: Your distance of your image behind a plane mirror is equal ...

A: The focal distance of plane mirror is

Q: How does the Moon’s diameter compare with the distance between Earth and the Moon?

A: Answer: The moon's diameter is 1/100 the distance between Earth and the moon.

Q: Calculate the magnitude of the electric field at one corner of a square 1.82 mm on a side if the oth...

A: Given:The charge on the corners of square,QA = 1.75 μCQB = 1.75 μCQC = 1.75 μCSide of square (a) = 1...

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: 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: Give the geometric meaning of SHM with the help of uniform circular motion.

A: Along the circumference of a circle having radius “a”, particle  A is moving such that the projectio...

Q: A train, standing in a station-yard, blows a whistle of frequency 1200 Hz in still air. The wind sta...

A: In the first case, when the train is standing in the yard, and observer is standing at the station.A...

Q: A metre long narrow bore held horizontally (and closed at one end) contains a 66 cm long mercury thr...

A:

Q: Distinguish among a scientific fact, a hypothesis, a law, and a theory.

A: Scientific fact:In science, a fact is an observation that has been confirmed so many times that scie...

Q: What is the difference between wave velocity and particle velocity?

A: Wave velocity is the velocity with which a wave propagates in a medium. It is constant for a homogen...

Q: A particle executes SHM of period 8s. After what time of its passing through the mean position, will...

A: Now, let , A and y be the angular frequency, amplitude and displacement from the mean position

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.