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Q: A flat area 200cm2 is seperated from a large plate by a layer of oil 2mm thick . If coefficient of v...

A: According to Newton’s formula of viscosity

Q: 52. If the other pushes he daughter to the right with a force of 160 N, with what magnitude of force...

A: Given:Mass of mother = 80 kgMass of daughter = 40 kgForce exerted by mother on daughter (F) = 160 N

Q: 8. Shaming of flying: is it fair? We are seeing in recent years the shaming of flying. The reasoning...

A: Now a days flight shaming is popular to curb the global climate change . this initiation is accepete...

Q: Derive Charles' law and Charles' law of pressure with the aid of kinetic theory of gases.

A: In order to define how gases expand when they gets heated is by using the Charles law. This says

Q: What is drift velocity? Write the formula to calculate drift velocity.

A: Drift velocity is the velocity with which charge particles get drifted when placed in an electric fi...

Q: I need help with questions #3.

A: Click to see the answer

Q: Obtain standard gas equation with the help of kinetic theory of gases.

A: Assumption:Gases are composed of small molecules and each molecules of the gases behave as point mas...

Q: What macroscopic property of an ideal gas doubles when the absolute temperature is doubled while kee...

A: The relation connecting the pressure , temperature and volume of the ideal gas is given by,

Q: What is the temperature when all molecular motion ceases?

A: Kelvin scale is defined as a temperature scale whose zero point is absolute zero where the entropy b...

Q: If a person standing near a moving train, there is a danger that he will fall towards it. Explain.

A: If a person standing near a moving train, there is a danger that he will fall towards it because

Q: Suppose you walk 10.5m in a direction of 23 degrees south of west, then you walk 19.5m in a directio...

A: Click to see the answer

Q: Cooling is produced when a gas at high pressure suddenly expands. Explain.

A: When the gas at high pressure suddenly expands, the average distance between its molecules increases...

Q: Is temperature less than absolute zero possible ? If not, why?

A: Temperature is a measure of the kinetic energy of the molecules. As an object becomes colder, the co...

Q: The angular frequency of a simple harmonic oscillator is 1.4x106 rad/s. Its period is about:

A: Step 1It is given that the angular frequency of a simple harmonic oscillator is

Q: Can you explain it to me please

A: Click to see the answer

Q: State and explain the postulates of the special theory of relativity.

A: Special theory of relativity states the connection between space and time. It is based on two postul...

Q: Write difference between fission and fusion.

A: Difference between fission and fusion can be given as:

Q: A brass disc fits tightly into a hole in an iron plate. Should you heat or cool the system to loosen...

A: For a brass disc fits tightly into a hole in an iron plate,one should cool.

Q: A typical red blood cell subtends an angle of only 1.93E-5 rad when viewed at a person's near-point ...

A: The angular magnification of microscope is

Q: When the number density of gas molecules increases, there is a decrease in their mean free path.

A: The average distance between two successive collisions is the mean free path . it is denoted by l.

Q: why thank you!

A: Let l be the length of the centre of mass of disc from the pendulum, g be the acceleration due to gr...

Q: If three molecules have velocities 0.5,1,2km/s respectively, calculate the ratio of the root mean sq...

A: Let the velocities of the three molecules be denoted as v1, v2 and v3.Let the root mean square veloc...

Q: A delivery truck travels 20 blocks north, 14 blocks east, and 26 blocks south. What is its final dis...

A: A delivery truck travels 20 blocks north, and 26 blocks south. So the truck travels 6 blocks south. ...

Q: The tube of a mercury barometer is 5mm in diameter. How much error does the surface tension cause in...

A: The depression of the mercury level due to the surface tension gives the error in the reading of th...

Q: Why two thin blankets are warmer than a single blanket of double the thickness?

A: Step 1If there are more layers, air can’t pass deeper.

Q: Spring balances show correct readings even after these have been used for long time.

A: Elastic fatigue is the property in the which the body become less elastic in nature under the action...

Q: Why are we advised to store medicines below 86 degree F?

A: Medicines should be stored under proper conditions to ensure that their quality doesn’t affected. On...

Q: A cylinder containing water upto 25cm height has a hole of cross-section 0.25cm2 at its bottom. It i...

A: Volume rate flow through the bottom of the cylinder is:

Q: I don't understand how i got this homework problem wrong the first time, my initial answer was "7/10...

A: The ratio of the French decimal week to the standard week is

Q: 2 a A girl stands 160 m away from a high wall and claps her hands at a steady rate so that each clap...

A: Part (a): Distance between the girl and the wall = 160 mFrequency of the clap = 60/60 = 1HZ

Q: What are Maxwell's relation? Give its derivation.

A: in order to relate variations in one set of thermodynamic variable to other set of variables, Maxwel...

Q: If an inflated tyre bursts , the air issuing out is cold, why?

A: Click to see the answer

Q: Calculate the speed of efflux of kerosene oil from an orifice of a tank in which pressure is 4 atmos...

A: According to Bernoulli’s theorem,

Q: Consider a steel bridge 200m long in a locality when temperature varies from 243K to 313K. Find the ...

A: Let l be the length of the bridge initially.Write the expression for the change in length of the bri...

Q: What is error in measurement? Broadly explain different types of error in measurement.

A: Click to see the answer

Q: Water drops fall from the edge of a roof at a steady rate. A fifth drop starts to fall just as the f...

A: From the given information, say the first drop fell at time t=0, then the second drop fall at t=T, t...

Q: Water flows at the rate of 4 L/s through an orifice at the bottom of a tank which contains water 720...

A: Given:Volume flow rate (Q)=4 L/SHeight(h) =720cm

Q: The end of the capillary tube of radius r immersed into water of surface tension T and density d. Wh...

A: The formula for the raise of water level in a capillary tube is:

Q: What should be the average velocity of water in a tube of radius 0.005m so that the flow is just tur...

A: The radius (r) of the tube is 0.005 m. Therefore, the diameter (d) of the tube will be 0.01 m. Densi...

Q: Fill in the blanks(a) The volume of a cube of side 1 cm is equal to _____m3(b) The surface area of a...

A: (a) Given,

Q: The volume of gas sample is increased. Why does the pressure which is exerted by gas decreases?

A: Boyle’s law states that “the pressure of a given mass of an ideal gas is inversely proportional to i...

Q: 5.6 hours = ________ seconds

A: Click to see the answer

Q: I need help formulating this graph

A: Take time on x-axisAnd volume of water on y-axis

Q: What is Resonance? Explain briefly with examples.

A: Click to see the answer

Q: A long distance runner has an average speed of 3.0 m/s. How far (in m) does the runner travel in 20 ...

A: The expression for the travelled distance is,

Q: How much equal charge should be placed on the earth and the moon so that the electrical repulsion ba...

A: Click to see the answer

Q: What is the magnitude (in N/C) and direction of an electric field that exerts a 2 ✕ 10−5 N upward fo...

A: Write the expression for force exerted on an electric charge due to an electric field

Q: A force F depends on θ as F =K/sinθ+ncosθ wher K and n are +ve constants. Find the minimum value of ...

A: Write the given expression for the force F, differentiate it with respect to theta and equate it to ...

Q: 2. Using data from Table, calculate the daily energy needs of a person who sleeps for 8.00 h, walks ...

A: The table shows the energy consumption rate for various activities:

Q: A seconds pendulum is one that has a half-period of 1 second. Caluclate the length of such a pendulu...

A: The time period of pendulum is

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2. Draw a free-body diagram of a baseball catcher at the instance the ball strikes his glove.