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Our apparent weight is actually judged not by the force of gravity pulling on us, but rather by the force of the ground pushing up against us. Because the earth is rotating, and your body is actually moving in a circle with a centripetal acceleration, your apparent weight will often by slightly different at different parts of the earth. If your mass is 100 kg, what is your actual weight?
By what percent will your apparent weight change if you were to travel from the north pole to the equator?
By what percent does your apparent weight change from your true weight at 35.22 degrees North latitude.
A sound wave with intensity 4 mW/m2 interferes destructively with a sound wave that has an intensity of 13 mW/m2
A solid cylindrical disk has a radius of 0.45 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk
An electron is accelerated from rest through a potential difference that has a magnitude of 3.00x10^7 V. What is the relativistic kinetic energy (in joules) of the electron
In a vacuum chamber the pressure is lowered to 1.0 x 10-10 mm Hg. how many molecules are in 1 cm3 in this chamber
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
An image of the moon is focused onto a screen using a converging lens of focal length f=35.3cm. What is the diameter of the moon's image
A garden plot must have a central planting area of length 13 m and width 8 m. There is to be a sidewalk around its edge of width w. If the total area, planting area plus sidewalk area, is 150 m^2, what is the sidewalk width w in meters.
The mean distance between the Earth and the Sun is 1.50×1011 m. The average intensity of solar radiation incident on the upper atmosphere of the Earth is 1390 W/m2, determine the total power radiated by the Sun
Starting with an initial speed of 5.00 m/s at a height of 0.335 m, a 1.50-kg ball swings downward and strikes a 4.60-kg ball that is at rest, How high does each ball swing after the collision
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density in g/cm3
The semiconducting compound CdTe is widely used for infrared light emmiting diodes (LEDs). find the frequency of light emitted by a CdTe LED
A parallel combination of an 10 resistor and an unknown resistor R is connected in series with a 13 resistor and a battery. What is the unknown resistance R
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