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An electromagnetic plane wave is traveling through a vacuum along the positive z-axis. At a particular point in space at one instant in time the electric field vector is E=i(6V/m) + j(6 V/m). (a) Find the magnetic field vector at the same point in space and instant in time. (b) Find the poynting vector at the same point in space and instant in time.
200 Joules of heat flows into a 35 g sample. If the temperature increases by 10°C, then what is the heat capacity of the sample
the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57. Find out the acceleration of the sled and child.
An LR circuit is hooked up to a battery as shown in the figure, with the switch initially open. The resistance in the circuit is R=120Ω, the inductance is L=4.10H, and the battery maintains a voltage of E=49V. At time t=0 the switch is closed.
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 88.0 cm, illustrate what was the speed of the bullet at impact with the block?
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an archaeologist finds an ancient firepit containing partially consumed firewood, what is the age of the ancient site
Two carts on a frictionless air track are made to travel toward each other. As they collide they stick together. if the cart on the left has a mass of 250 grams and is moving at 0.2 meters per second to the right.
A rifle with a mass of 1.76 kg fires a bullet with a mass of 5 g (0.005 kg). The bullet moves with a muzzle velocity of 401 m/s after the rifle is fired. what is the recoil velocity of the rifle
The total translational kinetic energy of the molecules of a sample of gas at 435 K is 1.99 × 104 J. How many moles does the sample comprise? Find the average translational kinetic energy of a single molecule.
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
A 3.50-kg ball, moving to the right at a velocity of +2.72 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
A car moving at 25m/s approaches a stationary whistle that emits a 350Hz sound. The speed of sound in the air is 343m/s, find the frequency of sound heard by the driver of the car
A glass is half-full of water, with a layer of oil (n = 1.50) floating on top. Determine the critical angle for the oil-water interface
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