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A laser emits 1.30x1018 photons per second in a beam oflight that has a diameter of 2.00mm and a wavelength of514.5nm.
Determine:
(a) the average electric field strength
(b) the average magnetic field strength for the electromagneticwave that constitutes the beam.
A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area of 2.50 x 10^-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm.
A positive point charge is at the centre (sorry! I'm in Canada!) of a cube. How do I determine the flux through each face of the cube and the total flux?
the drawings show three charges that have the same magnitude but may have different signs. in all cases the distance d
The nozzle of a fountain jet sits in the center of a circular pool of radius 3.30 . If the nozzle shoots water at an angle of 65, what is the maximum speed of the water
An infinitely long cylinder, of radius R, carries a frozen-in magnetisation, parallel to the z-axis, M=k s k-hat, where k is a constant and s is the distance from the axis. there is no free current anywhere.
At time 0 a grinding wheel has an angular velocity of 30. It has a constant angular acceleration of 35 until a circuit breaker trips at time = 2.20. From then on, wheel turns through an angle of 428 as it coasts to a stop at a constant angular dec..
1. a double loop of wire of radius 40 mm lies in a plane perpendicular to a uniform magnetic field. the field changes
A 10-m-long glider with a mass of 780kg(including the passengers) is gliding horizontally through the air at 30m/s when a 70Kg skydiver drops out by releasing his grip on the glider. What is the glider's speed
A 0.200 kg hammer is moving horizontally at 8.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
A wheel rotates about a horizontal axis, as shown in the figure. It has an outer radius R1 = 18.8 cm and mass M1 = 4.51 kg. What is the acceleration of the hanging weight after it is released
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
A photon of green light (wavelength = 532 nm) and a Ping-Pong ball (mass = 2.90 10-3 kg) have the same momentum
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