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Explain how the variance of the original population affects the spread of the sampling distribution of the sample mean.
q1. a magnifier has a magnification of 7x.how far from the lens must an object be placed so that its virtual image is
Illustrate at what horizontal distance, x, from the base of the building will the rock strike the ground? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2 .
The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, evaluate the total power radiated by the sun.
a charge q 5.0 nc is located 0.30m from point a and 0.50m from point b.a what is the potential at point a?b what is
A violin string of length 35 cm and mass 1.1 g has a frequency of 478 Hz when it is vibrating in its fundamental mode. What is the wavelength of the standing wave on the string
A pendulum of mass 0.25 kg and length L= 1.0 m is attached to a line which is fixed at point P, determine the force of tension in the line
What is the concept of magnetic field in the study of physics? please provide some explanation which is easy to understand
A distance away from a uniformly charged spherical object, the magnitude of the electric field is 575V/m and the electric potential is 3.50kV. What is the distance to the center of the object
an object is in front of a spherical mirror; the image of the object is upright and twice the size of the object, and it appear to be 12cm behind the mirror. what is the object distance
the mass of a copper atom is 5.55 x 10-25 kg and the density of copper is 8 920 kgm3 .a determine the number of atoms
A heat engine operates between a reservoir at 28°C and one at 354°C. What is the maximum efficiency possible for this engine
when two identical ions are separated by a distance of 6.0times10-10 m the electrostatic force each exerts on the other
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