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Suppose that the merry-go-round is a uniform disk having radius 2.5 m and consist of a mass of around 760 kg, and two children (each having a mass of around 23 kg) sit opposite to one other on the
However, it is found that when the heavier mass is given a downward speed of 0.24m/s, it comes to rest in around 6.5 s. Determine the average frictional torque acting on the pulley?
Approximate the average force applied on the feet of person by the ground when the landing is with bent legs. If the legs are bent, suppose that the body moves around 60 cm during the impact.
A heater element produces 150 watts of heat if it is joined to an electrical line supply of 110 V. When a second identical heater element is joined in series with the first and the combination to th
A point charge q1 of -1.6 C is at the origin and a second point charge q2 of +4.6 C is at the point x = 1.0 m, y = 2.0 m. (i) Determine the x and y coordinates of the position at which an electron wou
An ice skater consists of a moment of inertia of around 3.0 kg m^2 when his arms are outstretched and a moment of inertia of around 1.0 kg m^2 when his arms are tucked in close to his chest.
(i) When its initial speed was 5.5 m/s, determine the magnitude of the frictional force? (ii) Determine the coefficient of friction among the puck and the ice?
At that moment, determine the magnitude of the total force acting on the proton when the electric field is (i) in the positive z direction and consists of a magnitude of 4.14 V/m, (ii) in the negati
You want to accelerate a small merry-go-round from rest to the rotational speed of one-fourth of a revolution per second by pushing tangentially on it.
A pure sample of 226 Ra includes 2.0 x 10^14 atoms of the isotope. When the half-life of 226 Ra = 1.6 x 10^3 years, determine the activity of the sample?
A disk rotates having constant angular acceleration. The initial angular speed of the disk is around 2p rad/s. After the disk rotates via 13p radians, the angular speed is around 9p rad/s. (i) Dete
A proton traveling at 27.8° with respect to the direction of the magnetic field of strength 3.57 mT undergoes a magnetic force of around 9.24 x 10-17 N. Compute (i) the speed of proton and (ii)
Determine how much work is done in transferring one micro coulomb from an equipotential line of 4 volts to the equipotential line of around 8 volts?
A child pushes a merry go-round from rest to the final angular speed of around 0.72 rev/s with constant angular acceleration. In doing so, the child pushes the merry-go-round 2 revolutions. Find out
A radioactive material primarily is observed to encompass an activity of 1,000 decays/sec. When three hours later it is viewed to encompass an activity of 125 decays/sec, determine its half-life?
The uniform angular acceleration of the wheel is constant. Primarily its angular velocity is zero. Throughout the first 1.0 s time interval, it rotates via an angle of 88.0°.
Steam enter the nozzle at 1 Mpa 300C having a velocity of 3m/s. The pressure of the steam at the nozzle exit is 0.3Mpa find out the exit velocity of the steam from the nozzle supposing the reversibl
The two electrons A and B encompass speeds on 0.90c and 0.80c, correspondingly. Determine their relative speeds when they are:
Determine what would be the corresponding energy of an electron localized to within such a region?
Three point charges lie in the straight line all along the y-axis. A charge of q1 = -9.0uC is at y = 6.0m, and a charge of q2 = -8.0uC is at y = -4.0m. The total electric force on the third point ch
When the final image distance is around 27.0 cm from the eyepiece, determine the real diameter of the red blood cell?
The two positive point charges, each of which consists of a charge of 2.5 x 10^-9C, are positioned at y = 0.50 m and y = -0.50m. Determine the magnitude and direction of the resulting electric force
The Lyman series of hydrogen is made up of such transitions made from the higher levels to n=1. When the first line in this series consists of a wavelength of 122 nm, determine the wavelength of the
Four long, straight parallel wires each and every carry current I. In a plane perpendicular to the wires, the wires are at the corners of square of side length a. Determine the magnitude of the forc
Evaluate the magnetic field (comprising direction - as seen from the negative x-axis) within the shell. (Use the given as required: µ0, I, p and r.)