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Some good estimates about the human body can be made if it is assumed that we are made mostly of water. The mass of a water molecule is 2.99 10-26 kg. If the mass of a person is 66 kg, estimate the number of water molecules in that person.
q1. suppose a uniformly charged with a linear charge density wire starts at point 0 and rises vertically along the
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 88.0kHz and an rms strength of 6.35×10?9T
A train car with mass m1 = 527 kg is moving to the right with a speed of v1 = 8 m/s and collides with a second train car, What is the mass of the second train car
An ideal monatomic gas expands isothermally from 0.500 m3 to 1.25 m3 at a constant temperature of 630 K, Find the thermal energy transfer Q
a 142 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizantal is increased to ALPHA, If the coefficient of static friction between the crate and the ramp is 0.65, what is the angle alpha when the crate just begins t..
What is the angle of incidence in air of a light ray whose angle of refraction in glass is half the angle of incidence? Assume the refractive index of glass is 1.50
A tungsten target is struck by electrons that have been accelerated from rest through a 29.9-kV potential difference. Find the shortest wavelength of the radiation emitted
An object, oscillating harmonically in the x-coordinate, follows a trajectory described by the following equation: x(t) = 3.83 cm *sin(4.18 s-1 *t). What is the maximum speed attained by the object
the mass of a muon is 105.7 MeV/c^2. what is the value of the Rydberg constant for a muonic atom and what is the binding energy of a muonic atom
A 40 kg child sits in a swing suspended with 2.5 m long rope. Use energy conservation to determine the speed the child will have at the bottom of the arc when she is let go
Blue light of frequency 6.0 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons
A block of mass 8.4 kg is pulled along a horizontal frictionless floor by a cord, What is the magnitude of the normal force exerted on the mass by the floor
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