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You measure the current that the circuit draws from the battery and find 0.983 A. What are the resistance of each resistor and the potential difference across each resistor?
Toni has a mass of 43 kg and is moving with a speed of 11.6 m/s. Assume that air resistance is negligible. (a) Find Toni's kinetic energy.
If the cross-sectional area of the wire is 1.23 mm2, what current does the wire carry? With this current, how much time is required for 3.91 × 1020 electrons to pass any point on the wire?
What will be its radius of curvature if it moves in a plane perpendicular to a uniform 0.390 -T field? What is its period of revolution?
A beam of sunlight encounters a plate of crown glass at a 36.50° angle of incidence. Crown glass has n = 1.520 for red light and n = 1.538 for violet light. Find the angle between the violet ray
How far apart are the slits in µm? If we were able to observe the third-order fringe, at what angle would we expect it to be observed?
If a far sighted person has a near point that is 0.600 m from the eye, what is the focal length f_2 of the contact lenses that the person would need to be able to read a book held at 0.350 m from th
A No. 22 (dia.=0.62 mm) conducting wire of length 10.0 mhas a resistance of 0.60 O. What would be the resistance of a same diameter conducting wire which has a length of 25.0 m?
A typical American family uses 600 kWh of electricity a month. What is the average current in the 120 V power line to the house? (ans. in Amps) and On average, what is the resistance of a household?
Successive fringes on a screen 5.10 m away are 5.2 cm apart near the center of the pattern. Determine the wavelength (in nm) and frequency of the light (in Hz).
At time t, a particle of mass m has a position vector position vector r = (a^2 + ß)ˆi + at^2ˆj where a and ß are constants. Find an expression for the linear (translational) velo
If the average gauge pressure in the vein is 13900 Pa, what must be the minimum height of the bag in order to infuse glucose into the vein? Assume that the specific gravity of the solution is 1.04.
An electron moves along the z-axis with vz = 4.4 x 10^7 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the following (x, y, z) positions?
In the 1950s, an experimental train that had a mass of 2.00 104 kg was powered across a level track by a jet engine that produced a thrust of 5.30 105 N for a distance of 509 m. Assume that air res
Determine the magnitude of the magnetic field between the plates at a distance r = 5.0 cm from the center.
The magnetic flux through a circuit is reduced from 35 Tm^2 to 5 Tm^2 in 0.1s. The current induced in the circuit is 3.6 mA. What is the resistance to the circuit.
The average intensity of light emerging from a polarizing sheet is 0.764 W/m2, and the average intensity of the horizontally polarized light incident on the sheet is 0.883 W/m2. Determine the angle
A positive 2.0-mC charge moves at a speed of 2.9 * 106 m/s perpendicular to both fields. Determine the magnitude and direction of the net force on the charge.
A jetliner has a mass of 1.1 x 105 kg and flies at a speed of 120 m/s. (a) Find the value of its momentum. (b) If the speed of light in a vacuum had a hypothetical value of 150 m/s, what would be th
In a standing wave pattern the distance between the second and the seventh nodes is 5cm. If the frequency is 300 Hz, find the wavelength and the speed of the wave.
The intensity at a location 25 m away from the sound source is 3.00 10-4 W/m2. What is the intensity at a spot that is 70 m away?
A wooden shelter has walls constructed of wooden planks 1.00 cm thick. If the exterior temperature is -20.0°C and the interior is 5.00°C, find the rate of energy loss through a wall that has
Suppose that the speed of light in a vacuum were one million times smaller than its actual value: c = 3.00 x 102 m/s. The spring constant of a spring is 640 N/m. Determine how far you would have to c
A pion decays into a muon and a neeutrino. In the rest frame of the pion, the muon always has a speed of .507c. If a beam of pions is moving at 0.600c, what will be the speed of the muons in the lab
A 50-N force is the only force a 2-kg crate that starts from rest. At the instant the object has gone 2m the rate at which the force is doing work is: (answer is in Watts)