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Sandhya

Questions (146)

Ethyl alcohol flows through a horizontal tube of diameter 2.96cm that is joined to a second horizontal tube of diameter 1.50 cm.
1. 1 answer
2. 621 views
1) Sound propagating through air at 30 degree Celsius passes through a vertical cold front into air that is 40 degree Celsius.
1. 2 answers
2. 846 views
An object starts sliding up a plane tilted at an angle of alpha = 5.0◦ tothe horizontal. The object’s initial speed is v =
1. 1 answer
2. 959 views
Two metal disks are taped to a meterstick. The mass of themeterstick is 460 grams. Disk 1 has a mass of 300 grams and is located
1. 2 answers
2. 642 views
A 1500kg car travels at a constant speed of 22 m/s around a circular track that has a radius of 85 m.What is the average
1. 1 answer
2. 2,220 views
A wheel of radius 0.5 m rotates with a constant angular speed about an axis perpendicular to itscenter. A point on the wheel
1. 4 answers
2. 5,290 views
A 1.00 kg hollow ball with a radius of 2.2^10^-1 m, filled with air, is released from rest at the bottom of a 1.50 m deep pool
1. 1 answer
2. 1,032 views
Two carts of equal mass, m = 0.280 kg, are placed on africtionless track that has a light spring of force constant k = 51.9 N/m
1. 4 answers
2. 766 views
You are hired to check the technical validity of a futuristicspace mystery production. The scene takes place during the rst
1. 4 answers
2. 599 views
Identical twins, each with mass 56.2 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless.
1. 2 answers
2. 911 views
A 4.60-m-long, 580 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building
1. 3 answers
2. 1,107 views
What is the force on an electron moving at v = 2.5*10^5 m/s away from a long wire,3mm from the electron, carrying a 12 A
1. 2 answers
2. 614 views
The magnetic field inside a solenoid is 8.617 mT. If this solenoid sits with its central axis perpendicular to a 30 mT magnetic
1. 1 answer
2. 808 views
A coaxial cable has an inside conductor of radius 'a' carrying a current 'I'.The current returns as a uniform current through
1. 1 answer
2. 647 views
A coaxial cable has an inside conductor of radius 'a' carrying a current 'I'.The current returns as a uniform current through
1. 1 answer
2. 590 views
Two men lifted a total mass of 653.2 kg approximately 4 in. off the ground a total of 24 times. Estimate the total mechanical
1. 2 answers
2. 727 views
A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.0 m/s as in the figure below. If his speed is 26.7 m/s
1. 3 answers
2. 919 views
A 66.0 kg base runner begins his slide into second base when he is moving at a speed of 4 m/s. The coefficient of friction
1. 5 answers
2. 829 views
1.A roller coaster is towed up an incline at a steady speed of 0.500 m/s by a chain parallel to the surface of the incline. The
1. 2 answers
2. 934 views
1.In a cathode ray tube, electrons are accelerated from rest by aconstant electric force of magnitude 6.56 x 10*-17 N during the
1. 1 answer
2. 1,511 views
Three blocks of mass 1kg,2kg and 3kg move on a frictionless surface and a horizontal force 46 N acts on the 3kg block.1kg and
1. 2 answers
2. 2,241 views
1.A truck with a mass 5000 kg is heading East at 20 m/s. Meanwhile a car with a mass 2500 kg is heading North at 30 m/s. The two
1. 2 answers
2. 823 views
1. A 70 kg uniform 4.0 m long beam is attached to a vertical wall and is supported by a wire. The beam makes an angle of 45
1. 2 answers
2. 800 views
1.The greenish blue of water is evidence for theA) interaction between green and blue frequencies of light. B) reflection of red
1. 1 answer
2. 2,393 views
With regards to straight antennas and coiled antennas. Which one is better/more efficient at receiving, and why? Which one is
1. 0 answers
2. 1,107 views
11) Assume a liter of milk has an activity of 2400 pCi due to 40K. If a person drinks 2 glasses (0.460 l) per day, estimate the
1. 1 answer
2. 582 views
Assume a liter of milk has an activity of 2400 pCi due to 40K. If a person drinks 2 glasses (0.460 l) per day, estimate the
1. 0 answers
2. 556 views
A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity of 1.34 Bq. How old is the mummy?
1. 2 answers
2. 470 views
1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the
1. 2 answers
2. 2,747 views
1) The number of radioactive nuclei in a particular sample decreases over a period of 15 days to one-seventeenth the original
1. 2 answers
2. 2,132 views
1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the
1. 1 answer
2. 660 views
1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the
1. 0 answers
2. 599 views
1)7Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earth's surface.
1. 0 answers
2. 712 views
1)7Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earth's surface.
1. 2 answers
2. 1,406 views
5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature.
1. 3 answers
2. 1,643 views
1)What is the longest wavelength light capable of ionizing a hydrogen atom in the n = 6 state2)a. Calculate the energy of the
1. 3 answers
2. 2,557 views
5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature.
1. 4 answers
2. 872 views
2)Identify the initial and final states if an electron in hydrogen emits a photon with a wavelength of 1282.0 nm. Enter the
1. 2 answers
2. 652 views
1)Five possible transitions for a hydrogen atom are listed below: Select whether the atom gains or loses energy for each
1. 2 answers
2. 2,855 views
Indicate true or false in each of the following statements:1. A static magnetic field can do work on a current carrying wire
1. 2 answers
2. 897 views
You plan to build a large, cheap cyclotron using the Earth's magnetic fields(1x10^-4 T) and orbiting just above the Earth's
1. 3 answers
2. 582 views
1) You plan to build a large, cheap cyclotron using the Earth's magnetic fields(1x10^-4 T) and orbiting just above the Earth's
1. 1 answer
2. 500 views
1. A ball is projected horizontally from the edge of a table that is 4.0 meters high, and strikes the floor at a point3.0 meters
1. 2 answers
2. 706 views
For a L-C-R circuit Vin = v0*expjwt. Vout is taken across Ra) Calculate the impedance of the circuit measured from the input
1. 8 answers
2. 1,408 views
Do circular electric lines of force exist ? why? what about magnetic lines of force?Pl help
1. 2 answers
2. 402 views
1. What is the best way to determine levelness?Plot Position versus Time and compare the linear fit from each direction of
1. 9 answers
2. 1,833 views

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