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A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. The electric field of such a wave has an rms value of Erms = 2.8 x 109 N/C. Find the average power of each pulse that passes through a 9.3 x 10-5-m2 surface that is perpendicular to the laser beam.
In an amusement park rocket ride cars are suspended from 4.25 m cables attached to rotating arms at a distance of 6.00m from the axis of rotation. What is the angular speed of rotation
An electron, traveling at a speed of 6.10 × 107 m/s, strikes the target of an X-ray tube. What is the wavelength of the photon
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal, what is the area of the leaf in square meters
A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resistance.
a 35 microc charge is placed 60 cm from an identical 35 microc charge. how much work would be required to move a 0.72
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
a projectile is launched from the ground with an initial speed of 30 m/s at an angle of 40 degrees with respect to the horizontal. How far down range will the rocket have traveled
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.47 rad/s2. Calculate the total angle through which the wheel has turned
question a radiation detector exposed to sunlight records the energy falling on a given area each minute. the detector
Light enters a container of benzene at an angle of 43 deg. to the normal, Calculate the index of refraction of benzene
a singly ionized helium atom he has only one electron in orbit about the nuclues. what is the radius of the ion when it
A basketball player is balancing a spinning basketball on the tip of his finger. The angular displacement of the ball, in radians is
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