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A singly ionized oxygen atom moves at 9300 m/s in a circular path perpendicular to a 0.80 T magnetic field. Find the radius and period of its circular motion. 1. Find the radius of its circular moti
Specify a diameter and a length that the wire can have. What volume of Nicrome is required to make this wire?
A 0.0500 kg cube of ice at an initial temperature of -15.0oC is placed in 0.600 kg of water at T= 45.0oC in an insulated container of negligible mass. A). Calculate the final temperature of the water
Assume the helium behaves like an ideal gas and the balloon's ascent is too rapid to permit much heat exchange with the surrounding air. a. Calculate the volume of the gas at the higher altitude.
How many kilograms of steam will supply the same heat as was supplied by 1.00 kg of hot water in the first system?
Consider a damped harmonic oscillator. After four cycles the amplitude of the oscillator has dropped to 1/e of its initial value. Find the ratio of the frequency of the damped oscillator to its natu
When the x coordinates of the atoms are equal, a magnetic field perpendicular to their motion is turned on so that the atoms collide head-on. What are (a) the magnitude and (b) the direction of the
A concave makeup mirror has a radius of curvature of 25cm. How close to the mirror should a young woman's nose be in order to see an image enlarged by three times? Draw a ray diagram to illustrate t
Suppose a 50 kW radio station, operating at a frequency of 106.5 MHz, emits EM waves uniformly in all directions. a. What is the wavelength of the radio waves?
A sledge loaded with bricks has a total mass of 17.2 kg and is pulled at constant speed by a rope inclined at 19.3° above the horizontal. The sledge moves a distance of 21.0 m on a horizontal su
Three polarizers arranged in series are each oriented at 300 from the previous one. If an unpolarized light beam travels through the three polarizers and emerges with an intensity of 0.2 W/m2, what
Assuming the radius of earth to be 6.38 x 10^6, what is the magnitude of the resulting compressional force on earth?
A 50-N net force acts horizontally on a 2-kg crate that starts from rest. When the force has been acting for 2 s the rate at which it is doing work is:
A computer is reading data from a rotating CD-ROM. At a point that is 0.038 m from the center of the disc, the centripetal acceleration is 112 m/s2. What is the centripetal acceleration at a point t
An inductor has a 58.2 O reactance at 60 Hz. What will be the maximum current if this inductor is connected to a 50 Hz source that produces a 175.1 V rms voltage? Answer in units of A.
A long air-core solenoid of 240 turns has a length 0.2 m and radius 2.0 cm. It carries a current of 4.0 A. Find a) the magnetic field in the solenoid
Two capacitors of capacitances 10.0 μF and 12 μF are connected in series. A third capacitor of 15 μF is then connected in parallel with the 10 μF capacitor. The network is connected to
An object, initially moving in the negative x-direction, is subjected to a change in velocity in the positive y-direction. If the resulting velocity vector is drawn from the origin, into which quadr
What is the kinetic energy of the block when it first slides back through the point at which the spring is relaxed?
A child whose weight is 289 N slides down a 6.60 m playground slide that makes an angle of 37.0° with the horizontal. The coefficient of kinetic friction between slide and child is 0.0890.
An object moves at a constant velocity of 11 m/s to the southwest for an interval of 20 s. Halfway through this interval, what is the magnitude of its instantaneous velocity?
In a 2 dimensional Cartesian system, the x-component of a vector is known, and the angle between vector and x-axis is known. Which operation is used to calculate the magnitude of the vector? (taken
A taxicab moves five blocks due north, five blocks due east, and another two blocks due north. Assume all blocks are of equal size. What is the magnitude of the taxi's displacement, start to finish?
A stone of mass M sits at rest on a spring near the surface of the Earth. If the spring is compressed a distance d by the weight of the stone, what is the spring constant k?
An infinitely long line of charge has a linear charge density of 4.50×10-12 C/m. A proton is at distance 19.0 cm from the line and is moving directly toward the line with speed 1900 m/s.