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The position of a particle is given in cm by x = (7) cos 9t, where t is in seconds.
a) Discover the maximum speed.
...... m/s
b) Discover the maximum acceleration of the particle.
...... m/s2
c) What is the first time that the particle is at x = 0 and moving in the +x direction?
....... s
Photons of wavelength 334 nm are incident on a metal plate in a photocell and electrons are ejected. What is the maximum wavelength of photons that will eject electrons from this metal
a tiny sphere of mass 7.90 microg and charge ?2.80 nc is initially at a distance of 1.74 microm from a fixed charge of
A uniform electric field with a magnitude of 5650 N/C points in the positive x direction. Find the change in electric potential energy when a +15.5-"mu"C charge is moved 4.50 cm in the positive y direction.
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In a series circuit, a generator (1436 Hz, 14.7 V) is connected to a 15.2-? resistor, a 3.85-µF capacitor, and a 5.47-mH inductor. Find the voltage across each circuit element
Current of 20 Amp is carried by a copper wire. A 0.5 meter straight section of this wire passes through a region of a uniform magnitude field 1.6 tesla strong. find the magnitude of the magnetic force exerted on the wire
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A lamp which is 11.5 cm tall is in front of a concave mirror which has a focal length of 66.0 cm. How tall is the lamp's image if the lamp is a distance of 39.6 cm from the mirror
A 2.5 kg stone is dropped from a height of 4m. What is its momentum on impact
When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow. Compute the potential energy stored in the bow
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