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Sandhya

Questions (146)

$20000 amount to $ 24200 in two years under compound interest compounded annually
1. 1 answer
2. 381 views
A 10.0-mL solution of 0.300 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after the following additions of the
1. 2 answers
2. 2,130 views
A solution is made by mixing 5.00 × 102 mL of 0.167 M NaOH with 5.00 × 102 mL of 0.100 M CH3COOH. Calculate the equilibrium
1. 2 answers
2. 925 views
A 600-kg car is going around a curve with a radius of 120 m that is banked at an angle of 25.0° with a speed of 30.0 m/s.The
1. 3 answers
2. 10,109 views
1.Approximate sqrt3 by applying Newton's Method to the equation(x^2-3) = 0 2.The equation (x^3-x-2) = 0 has one real solution
1. 0 answers
2. 683 views
Express the number 25 as a sum of two nonnegative numbers whose product is as large as possible.
1. 2 answers
2. 3,088 views
A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude
1. 2 answers
2. 1,161 views
A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude
1. 0 answers
2. 607 views
A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude
1. 0 answers
2. 768 views
The change in electrostatic potential energy at a point when an electron is brought from infinity to that point is deltaE.What
1. 1 answer
2. 458 views
Two equal masses m are place at positions r1= (L, 2L, 3L) and r2= (3L, L ,2L). Calculate the moments of inertia Ix, Iy, Iz of
1. 0 answers
2. 427 views
Two equal masses m are place at positions r©û= (L, 2L, 3L) and r©ü= (3L, L ,2L). Calculate the moments of inertia Ix, Iy, Iz
1. 0 answers
2. 439 views
1.Three masses, m1, m2, and m3, are lying on a plane without friction and are connected by a string. A force F is applied to the
1. 1 answer
2. 809 views
1.A cylinder rolls without slipping on a horizontal plane and then up an incline. The linear speed of the cylinder at the
1. 1 answer
2. 580 views
Sketch the graph ofi) g(x) = sqrt(6x - x^2) ii)f(x) = (x^2 -2x - 3)/(x - 3)
1. 1 answer
2. 395 views
If g(x) = (x + 1)/x,finda) g(1) b) g(0) c) g(-1) d) g(x - 1)
1. 3 answers
2. 430 views
If y = x^2 + 5x - 9,for what values of x is y>5?
1. 1 answer
2. 365 views
What is the approximate energy emitted as blackbody radiation by a human being each second? What is the blackbody energy
1. 0 answers
2. 361 views
A snake is sunning itself on a rock. (a) If the snake is 0.3 m long, what is the approximate amount of radiation it absorbs from
1. 1 answer
2. 640 views
A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal. The massless rope attached to the
1. 1 answer
2. 3,087 views
A charge is uniformly distributed over a linear section from 0<x<1 such that the charge density is 10epsilon. Find the potential
1. 1 answer
2. 580 views
A particular amplifying device supplies electrons in a manner such that the current passing out of the device is given by I(t) =
1. 1 answer
2. 544 views
A 25 kg box slides, from rest, down a 9-m-long incline making an angle 15 degrees with the horizontal. The speed of the box when
1. 2 answers
2. 977 views
Noreen drops a big pumpkin from the top of a tall building and hears the splash on a trash can 4.50 seconds after she released
1. 1 answer
2. 436 views
Imagine an airplane flying under a cloud during a thunderstorm.Do the passengers get electrocuted? Explain why or why not.Should
1. 1 answer
2. 429 views
Imagine an airplane flying under a cloud during a thunderstorm.Do the passengers get electrocuted? EXPLAIN WHY or WHY NOT.Should
1. 1 answer
2. 475 views
A double slit diffraction pattern is formed on a distant screen using mercury green light ofwavelength 546.1 nm. Each slit has a
1. 0 answers
2. 1,092 views
A reflection grating is required which can resolve wavelengths as close as 0.002 nm in second order for the spectral region
1. 0 answers
2. 862 views
A baseball is thrown at 88 mi/h and with a spin rate of 1500 rev/min. If the distance between the pitcher’s point of release
1. 1 answer
2. 1,146 views
A uniform 2.00-m-long stick is raised at an angle of 30° to the horizontal above a sheet of ice. The bottom end of the stick
1. 1 answer
2. 717 views
A railroad car rolling along by itself is passing by a grain elevator, which is dumping grain into it at a constant rate. (a)
1. 2 answers
2. 691 views
1.An elastic cord is 5.0m long and 1.0cm in diameter and acts as a spring with spring constant 70 N/m, what is the young's
1. 1 answer
2. 950 views
1. If a steel rope and a nylon rope of equal lengths are to stretch by equal amounts when subjected to equal tensions, what must
1. 1 answer
2. 638 views
Calculate the magnetic field at the center of a wire square that consists of 120 loops and has sides of length 5 cm and carries
1. 1 answer
2. 441 views
A 15 μA current starts flowing in a circuit with a 3.0 μF capacitor of area 40 cm^2 at t = 0 s.(a) How fast is the voltage
1. 1 answer
2. 443 views
Consider two small circular current loops. Suppose one loop is placed above the other (but not touching), with their areas
1. 1 answer
2. 602 views
Consider a parallel-plate capacitor with charge density 7.5 10-7 C/m2 on the two plates and an electric field that points in the
1. 1 answer
2. 456 views
A wire of length 11 cm carries a current of 1.1 A. When the wire is placed so that the current passes through the wire along the
1. 1 answer
2. 530 views
A 160 MeV proton, moving in the x-direction, enters a region in which there is a magnetic field. The proton experiences an
1. 1 answer
2. 587 views
1.The earth is constantly bombarded by cosmic rays, which are charged particles from outer space. moving vertically Find the
1. 2 answers
2. 1,356 views
(1)A parallel-plate capacitor carrying charge q0 is modified by the insertion of a dielectric with κ = 4.3 between the plates.
1. 1 answer
2. 591 views
If only external forces can cause the center of mass of a system of particles to accelerate, how can a car on level ground ever
1. 1 answer
2. 726 views
Imagine yourself seated on a wheeled desk chair at your desk. Consider friction forces between the chair and the floor to be
1. 2 answers
2. 883 views
If only a single nonzero force acts on an object, does the object accelerate relative to all inertial reference frames? Is it
1. 2 answers
2. 1,215 views
A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.690 g, q = 4.75 µC) is
1. 2 answers
2. 1,732 views
A thin insulating thread of length L is attached to a point on the perimeter of a thin disk.Disk is has radius R< L and is
1. 1 answer
2. 722 views
A soap bubble is given negative charge, what will happen it the radius and why?
1. 1 answer
2. 758 views
1.A spherical condenser has inner and outer spheres of radii a and b respectively. The space between the two is filled air. The
1. 2 answers
2. 1,534 views
Peggy drives from Cornwall to Atkins Glen in 46 min. Cornwall is 73 km from Illium in a direction 29° west of south. Atkins
1. 1 answer
2. 697 views
A skydiver is falling straight down at 60 m/s when he opens his parachute and slows to 8.3 m/s in 4.0 s. What is the average
1. 1 answer
2. 1,110 views
A speedboat heads west at 115 km/h for 16.0 min. It then travels at 56.0° south of west at 87.0 km/h for 9.0 min.(a) What is
1. 1 answer
2. 506 views
A particle's constant acceleration is south at 2.1 m/s2. At t = 0, its velocity is 42.6 m/s east. What is the magnitude and
1. 1 answer
2. 365 views
A clump of soft clay is thrown horizontally from 78.40 m above the ground with a speed of 27.0 m/s. Where is the clay after 4.5
1. 1 answer
2. 727 views
A mass m = 1.50 kg oscillates on an ideal,massless horizontal spring with a constant k = 73.5 N/m.The amplitude of oscillation
1. 1 answer
2. 1,163 views
a) what is the density of a log floating in salt water if 42% of its volume is exposed? The density of salt water is 1025 kg/m^3
1. 0 answers
2. 467 views
(a)The angular speed of a ceiling fan is increased uniformly in 3.0 s from 180 revs/min to 290 revs/min. What is the angular
1. 1 answer
2. 548 views
Two metal spheres, each of mass 1 gm and radius 0.5 cm are placed on a smooth, horizontal, insulated plate such that their
1. 1 answer
2. 639 views
A uniform electric field E in the x-direction is produced by an appropriate charge configuration. A thin sheet of charge s per
1. 1 answer
2. 595 views
a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on.
1. 1 answer
2. 464 views
a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on.
1. 1 answer
2. 516 views
a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on.
1. 0 answers
2. 437 views
(i) the magnetic flux as a function of the current ‘i’, and(ii) the magnetic flux if a gap of width delta^2 < < A) is cut in
1. 1 answer
2. 410 views
A coil of N turns is wrapped around an iron ring of radius ‘d’ and cross-section‘A’ (d > > A). Assuming a constant
1. 1 answer
2. 457 views
A coil of N turns is wrapped around an iron ring of radius ‘d’ and cross-section‘A’ (d > > A). Assuming a constant
1. 0 answers
2. 533 views
A straight horizontal rod A of mass 50 gm and length 0.5 m, is placed in a uniform horizontal magnetic field of 0.2 T,
1. 1 answer
2. 873 views
Find the period of revolution of an artificial planet if the semi-major axis of the planet’s elliptic orbit is greater than
1. 1 answer
2. 1,021 views
A bullet of mass ‘m’ traveling horizontally at a speed ‘v’ embeds itself in the centre of a block of wood of mass
1. 1 answer
2. 605 views
A particle moves from rest, its initial position being given by x = c with reference to a fixed point O. Its acceleration at a
1. 1 answer
2. 457 views
Design some simple digital circuits based on Boolean expressions. Draw circuits that implement the following Boolean expressions
1. 1 answer
2. 1,260 views
Two 10 meter long wires are parallel to each other and 5 cm apart.They carry currents of 6.0 A in opposite directions. What is
1. 1 answer
2. 1,178 views
a)The star ships Enterprise and Potemkin leave the Earth and travel in opposite directions each at 0.60c relative to an observer
1. 1 answer
2. 448 views
A 12 V battery is connected to 5 mega ohm resistor and a 6 micro farad capacitor and an open switch. After how many seconds will
1. 2 answers
2. 896 views
Particle A has twice the mass of particle B, and carries three times the charge of B charge. Both particles are sent
1. 1 answer
2. 1,313 views
The hydrogen atom consists of a proton with an electron in orbit about the proton. The laws of quantum mechanics determine that
1. 4 answers
2. 918 views
1.A spherical bowl(R = 20 cm) contains water(n = 1.33) and your pet gold fish who, is swimming 15 cm from the centre of the
1. 1 answer
2. 1,064 views
A 2.0 kg block is attached to the end of a spring with a spring constant of 350 N/m and forced to oscillate by an applied force
1. 1 answer
2. 1,373 views
Force F causes displacement d of a 20-Kg object starting from rest along a frictionless path. F= 10 N i + 50 N j + 15 N k and d=
1. 1 answer
2. 521 views
1. Planet X orbits the sun with a mean orbital radius that is 6200 times that of earth. Its diameter is twice that of earth, and
1. 1 answer
2. 833 views
A woman can see clearly her right eye only when objects are between 45 cm and 155 cm away. Prescription bifocals should have
1. 0 answers
2. 735 views
A woman can see clearly her right eye only when objects are between 45 cm and 155 cm away. Prescription bifocals should have
1. 1 answer
2. 646 views
Cosmic microwave background radiation fills all space with an average energy density of 4 x 10^-14 j/m^3.(a) Find the rms value
1. 1 answer
2. 1,832 views
A thin brass ring of inner diameter 10cm at 20degrees C is warmed and slipped over an aluminum rod of diameter 10.01cm at
1. 1 answer
2. 1,645 views
There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and
1. 2 answers
2. 981 views
There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and
1. 1 answer
2. 507 views
A block of mass M is sliding down an inclined plane and isaccelerating. Which of the following statements are true? Choices:
1. 4 answers
2. 1,457 views
An object of mass m is hanging by a string from the roof of anelevator. We want to compare the tension in the string due to the
1. 5 answers
2. 3,514 views
In an amusement park rocket ride, cars are suspended from L = 4.28-m cables attached to rotating arms at a distance of d = 6.10
1. 1 answer
2. 1,082 views
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor
1. 2 answers
2. 1,614 views
A rectangular trough, 2.0 m long, 0.50 m wide, and 0.50 m deep, is completely full of water. One end of the trough has a small
1. 3 answers
2. 4,664 views
. Ethyl alcohol has been added to 160 mL of water in a container that has a mass of 130 g when empty. The resulting container
1. 2 answers
2. 1,040 views
5 mol of an ideal gas is kept at 394◦C in an expansion from 1 L to 5 L .How much work is done by the gas? Answer in units of
1. 1 answer
2. 767 views
A container of volume 0.39 m3 contains 8.7 mol of argon gas at 32◦C. Assuming argon behaves as an ideal gas, find the total
1. 1 answer
2. 615 views
A microphone is located on the line connecting two speakers that are 0.546 m apart and oscillating 180degrees out of phase. The
1. 1 answer
2. 1,056 views
A car moving at a speed of approximately 176.5 km/h. 923 m in front of the car, there is a truck moving at a speed of 84.2 km/h
1. 0 answers
2. 636 views
A bicycle with wheels of 70.0 cm diameter is going at a speed of 12.0 m/s.How fast is a point on the rim at the top of one of
1. 2 answers
2. 597 views
The intensity of an earthquake wave is measured to be 6 x10 ^6 J ms at a distance of 50 km from its source. Calculate the
1. 1 answer
2. 623 views
A flag pole consists of a 2.0 m long, 5.0 kg decorative ball on the end. What is the gravitational torque on the flag pole,
1. 2 answers
2. 695 views
A mine car, mass= 440 kg rolls at a speed of 0.50 m/s on a horizontal track. A 150-kg chunk of coal has a speed of 0.80 m/s when
1. 2 answers
2. 2,533 views
A bungee jumper with mass 69.5 kg jumps from a high bridge.After reaching his lowest point, he oscillates up and down, hitting a
1. 2 answers
2. 989 views
A trapeze artist of mass m swings on a rope of Length L. Initially, the trapeze artist is at rest and the rope makes an angle
1. 2 answers
2. 1,297 views

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