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A body of 2kg is suspended from the ceiling of an elecator moving up with an accelration "g". Find the apparant weight of body in the elevator? Need detailed.
A scaffold of mass 61 kg and length 6.5 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 79 kg stands at a point 1.2 m from one end.
If 23.6 g of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.99 hours, then what is the current through the cell during this period? (Assume that the gold ions c
When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes are observed, Find the wavelength of the light used. Please explain step by step.
A force of 20 N is applied at the edge of a wheel of radius 40 cm. Find the torque acting on the wheel?
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minim
Suppose one of the resistor in the bridge circuit was heated by baking it in an oven. How would this effect the current flowing through it after placing it back into the circuit ?
Does the resistivity of a material depend on its length or cross-sectional area? Does the resistance depend on the lenghtr or cross-sectional areas? Explain.
The electric potential at a position located a distance of 18.9 mm from a positive point charge of 6.80x10-9C and 13.3 mm from a second point charge is 1.26kV. Calculate the value of the second char
How sure are when you're saying"those who were born blind only have auditory dreams and those who were blind at an early age only have visual dreams",is it proven scientifically or it's just an the
An infinitely -long, uniformly charged line of charge with linear charge density n=0.1 C/m lies a distance d=0.068m from the center of a sphere with radius= 0.23m. what is the amount of charge insid
A uniform electric field ai+bj intersects a surface of area A. what is the flux through this area if the surface lies (a)in the yz plane, (b) in the xz plane, and (c)in the xy plane?
A 35.0 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. the flux in this position is 4.80E+05 N*m^2/C. what is the magnitude of the elect
To the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 26.0m/s .If nothing is done to correct its orbit, with what s
When the spring is compressed 4.0 cm from its relaxed length, the block is released. The block slides across a horizontal frictionless surface and collides elastically with another block (5.0 kg) th
In nature, the horizontal gene transfer across bacteria is mediated by (A) gene cloning followed by transformation (B)conjugation and transformation (C) conjugation only (D) transformation only
Hanging wire has a length of 1.90m . When a steel ball of mass 51.0 kg is suspended from the wire, the wire stretches by 1.50 mm . If the ball is pulled down a small additional distance and released
Consider a neutron star whose mass is twice the mass of the Sun and whose radius is 12.3 km. If it rotates with a period of 3.03 s, what is the speed of a point on the Equator of this star?
The numerical value of the angular velocity of rotation of the earth should be _____ rad/s in order to make the effective acceleration due to gravity at the equator equal to zero.
String 1 is attached to the end of the bar, and string 2 is attached a distance 0.65m from the other end. A monkey of mass 1kg walks from one end of the bar to the other. Find the tension T1 in stri
What is the center of gravity? How can you find it in various objects? How dooes it effect the equilibrium of an object? What is stability? What are the types of stability? What effect does stabilit
An electron with a kinetic energy of 10eV is moving from left to right along the x-axis. The potential energy is V=0 for x<0 and V=20eV for x>0. Treat the elctron as a one-dimensional plane w